CERN: Difference between revisions

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{{Short description|European research centre in Switzerland}}
{{Short description|European particle physics research centre}}
{{Other uses|Cern (disambiguation)}}
{{Other uses|Cern (disambiguation)}}
{{Pp-move}}
{{Pp-move}}
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| native name              = {{lang|fr|Organisation européenne pour la recherche nucléaire}}
| native name              = {{lang|fr|Organisation européenne pour la recherche nucléaire}}
| native_name_lang        = fr
| native_name_lang        = fr
| logo                    = [[File:CERN logo.svg|160px]]
| logo                    = [[file:CERN logo badge.svg|160px]]
| image                    = CERN-aerial 1.jpg
| image                    = CERN-aerial 1.jpg
| caption                  = CERN's main site in [[Meyrin]], Switzerland, looking towards the French border
| caption                  = CERN's main site in [[Meyrin]], Switzerland, looking towards the French border
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| mcaption                = States with full CERN membership
| mcaption                = States with full CERN membership
| membership              = {{Collapsible list
| membership              = {{Collapsible list
| title = Full members (24):
| title = Full members (25):
| {{flag|Austria}}
| {{flag|Austria}}
| {{flag|Belgium}}
| {{flag|Belgium}}
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| {{flag|Serbia}}
| {{flag|Serbia}}
| {{flag|Slovakia}}
| {{flag|Slovakia}}
| {{flag|Slovenia}}
| {{flag|Spain}}
| {{flag|Spain}}
| {{flag|Sweden}}
| {{flag|Sweden}}
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| {{flag|Cyprus}}
| {{flag|Cyprus}}
| {{flag|India}}
| {{flag|India}}
| {{flag|Ireland}}
| {{flag|Latvia}}
| {{flag|Latvia}}
| {{flag|Lithuania}}
| {{flag|Lithuania}}
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}}
}}


The '''European Organization for Nuclear Research''',<!-- The official name contains organization/organisation, NOT council/conseil (the latter is in the outdated acronym CERN, which was nevertheless retained by the organization). You can read the history section or the relevant part of this article for more insight. --> known as '''CERN'''<!-- The acronym is explained on CERN's website: https://home.cern/about --> ({{IPAc-en|s|ɜːr|n}}; {{IPA|fr|sɛʁn}}; {{lang|fr|Organisation européenne pour la recherche nucléaire}}), is an [[intergovernmental organization]] that operates the largest [[particle physics]] laboratory in the world. Established in 1954, it is based in [[Meyrin]], western suburb of [[Geneva]], on the [[France–Switzerland border]]. It comprises [[#Member states and budget|24 member states]].<ref>{{Cite journal |date=2020 |title=Governance |url=https://cds.cern.ch/record/2723123 |journal=CERN Annual Report |language=en |publisher=CERN |volume=2019 |pages=50 |doi=10.17181/ANNUALREPORT2019 |author1=CERN}}</ref> Israel, admitted in 2013, is the only full member geographically out of Europe.<ref>{{cite web|url=https://cerncourier.com/cws/article/cern/55869|title=CERN to admit Israel as first new member state since 1999 – CERN Courier|website=cerncourier.com|date=22 January 2014}}</ref><ref>{{Cite web |title=CERN accepts Israel as full member |url=http://www.timesofisrael.com/cern-accepts-israel-as-full-member/ |access-date=10 November 2022 |website=[[The Times of Israel]] |date=12 December 2013 |language=en-US}}</ref> CERN is an official [[United Nations General Assembly observers#Intergovernmental organizations|United Nations General Assembly observer]].<ref>{{cite web|url=https://www.un.org/en/about-us/intergovernmental-and-other-organizations|title=Intergovernmental Organizations|publisher=United Nations}}</ref>
The '''European Organization for Nuclear Research''',<!-- The official name contains organization/organisation, NOT council/conseil (the latter is in the outdated acronym CERN, which was nevertheless retained by the organization). You can read the history section or the relevant part of this article for more insight. --> known as '''CERN'''<!-- The acronym is explained on CERN's website: https://home.cern/about --> ({{IPAc-en|s|ɜːr|n}}; {{IPA|fr|sɛʁn}}; {{lang|fr|Organisation européenne pour la recherche nucléaire}}), is an [[intergovernmental organization]] that operates the largest [[particle physics]] laboratory in the world. Established in 1954, it is based in [[Meyrin]], a western suburb of [[Geneva]], on the [[France–Switzerland border]]. It comprises [[#Member states and budget|24 member states]].<ref>{{Cite journal |date=2020 |title=Governance |url=https://cds.cern.ch/record/2723123 |journal=CERN Annual Report |language=en |publisher=CERN |volume=2019 |page=50 |doi=10.17181/ANNUALREPORT2019 |author1=CERN}}</ref> Israel, admitted in 2013, is the only full member geographically out of Europe.<ref>{{cite web|url=https://cerncourier.com/cws/article/cern/55869|title=CERN to admit Israel as first new member state since 1999 – CERN Courier|website=cerncourier.com|date=22 January 2014|access-date=3 May 2021|archive-date=19 June 2018|archive-url=https://web.archive.org/web/20180619044901/http://cerncourier.com/cws/article/cern/55869}}</ref><ref>{{Cite web |title=CERN accepts Israel as full member |url=http://www.timesofisrael.com/cern-accepts-israel-as-full-member/ |access-date=10 November 2022 |website=[[The Times of Israel]] |date=12 December 2013 |language=en-US}}</ref> CERN is an official [[United Nations General Assembly observers#Intergovernmental organizations|United Nations General Assembly observer]].<ref>{{cite web|url=https://www.un.org/en/about-us/intergovernmental-and-other-organizations|title=Intergovernmental Organizations|publisher=United Nations}}</ref>


The acronym CERN is also used to refer to the laboratory; in 2023, it had {{val|2,666}} scientific, technical, and administrative staff members, and hosted about {{val|12,370}} users from institutions in more than 80 countries.<ref>{{cite journal |year=2024 |title=CERN in figures |url=https://cds.cern.ch/record/2897082/files/CERNAnnualReport_2023_EN_online.pdf |journal=CERN Annual Report |language=en |publisher=CERN |volume=2023 |pages=56 |doi=10.17181/ANNUALREPORT2023 |author1=CERN}}</ref> In 2016, CERN generated 49 [[Byte#Multiple-byte units|petabytes]] of data.<ref>{{cite book |year=2017 |chapter=Discovery machines |url=https://cds.cern.ch/record/2270805 |title=CERN Annual report 2016 |series=Annual Report of the European Organization for Nuclear Research |language=en |publisher=CERN |volume=2016 |pages=20–29 |chapter-url=https://cds.cern.ch/record/2270811?ln=en}}</ref>
The acronym CERN is also used to refer to the laboratory; in 2024, it had {{val|2,704}} scientific, technical, and administrative staff members, and hosted about {{val|12,406}} users from institutions in more than 80 countries.<ref>{{cite journal |year=2024 |title=CERN in figures |url=https://cds.cern.ch/record/2931994/files/CERNAnnualReport_2024_EN_online.pdf |journal=CERN Annual Report |language=en |publisher=CERN |volume=2024 |page=53 |doi=10.17181/ANNUALREPORT2024 |author1=CERN}}</ref> In 2016, CERN generated 49 [[Byte#Multiple-byte units|petabytes]] of data.<ref>{{cite book |year=2017 |chapter=Discovery machines |url=https://cds.cern.ch/record/2270805 |title=CERN Annual report 2016 |series=Annual Report of the European Organization for Nuclear Research |language=en |publisher=CERN |volume=2016 |pages=20–29 |chapter-url=https://cds.cern.ch/record/2270811?ln=en}}</ref>


CERN's main function is to provide the [[particle accelerator]]s and other infrastructure needed for high-energy physics research – consequently, numerous experiments have been constructed at CERN through international collaborations. CERN is the site of the [[Large Hadron Collider]] (LHC), the world's largest and highest-energy particle collider.<ref>{{cite web |title=The Large Hadron Collider |url=https://home.cern/science/accelerators/large-hadron-collider |access-date=2021-05-29 |website=CERN |language=en}}</ref> The main site at [[Meyrin]] hosts a large computing facility, which is primarily used to store and analyze data from experiments, as well as simulate [[event (particle physics)|events]]. As researchers require remote access to these facilities, the lab has historically been a major [[wide area network]] hub. CERN is also the birthplace of the [[World Wide Web]].<ref>
CERN's main function is to provide the [[particle accelerator]]s and other infrastructure needed for high-energy physics research – consequently, numerous experiments have been constructed at CERN through international collaborations. CERN is the site of the [[Large Hadron Collider]] (LHC), the world's largest and highest-energy particle collider.<ref>{{cite web |title=The Large Hadron Collider |url=https://home.cern/science/accelerators/large-hadron-collider |access-date=2021-05-29 |website=CERN |language=en}}</ref> The main site at [[Meyrin]] hosts a large computing facility, which is primarily used to store and analyze data from experiments, as well as simulate [[event (particle physics)|events]]. As researchers require remote access to these facilities, the lab has historically been a major [[wide area network]] hub. CERN is also the birthplace of the [[World Wide Web]].<ref>
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== History ==
== History ==
[[File:Cernfounders.png|thumb|upright=0.95|The 12 founding member states of CERN in 1954<ref name="foundation">{{cite web|url=https://public.web.cern.ch/public/en/About/History54-en.html |title=CERN.ch |publisher=CERN |access-date=20 November 2010}}</ref>]]
The convention establishing CERN<ref name=":0" /> was ratified on 29 September 1954 by 12 countries in Western Europe.<ref>{{Cite book|title=History of CERN|publisher=North-Holland Physics Pub|last1=Hermann |first1=Armin |last2=Belloni |first2=Lanfranco |last3=Krige |first3=John |others=European Organization for Nuclear Research |year=1987|isbn=0-444-87037-7|location=Amsterdam|pages=|oclc=14692480}}</ref> The acronym CERN originally represented the French words for {{lang|fr|Conseil Européen pour la Recherche Nucléaire}} ('European Council for Nuclear Research'), which was a provisional council for building the laboratory, established by 12 European governments in 1952. During these early years, the council worked at the [[University of Copenhagen]] under the direction of [[Niels Bohr]] before moving to its present site near Geneva.<ref>{{Cite book|last=Krige|first=John|url=https://books.google.com/books?id=yzE9AQAAIAAJ&q=oern|title=From the Provisional Organization to the Permanent CERN, May 1952 – September 1954: A survey of developments|publisher=Study Team for CERN History|year=1985|page=5|language=en}}</ref><ref>{{Cite web|last=Dakin|first=S. A. ff.|date=2 November 1954|title=Conflict between title and initials of the Organization|url=https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-date=2022-10-09 |url-status=live}}</ref>
The convention establishing CERN<ref name=":0" /> was ratified on 29 September 1954 by 12 countries in Western Europe.<ref>{{Cite book|url=https://www.worldcat.org/oclc/14692480|title=History of CERN|publisher=North-Holland Physics Pub|last1=Hermann |first1=Armin |last2=Belloni |first2=Lanfranco |last3=Krige |first3=John |others=European Organization for Nuclear Research |year=1987|isbn=0-444-87037-7|location=Amsterdam|pages=|oclc=14692480}}</ref> The acronym CERN originally represented the French words for {{lang|fr|Conseil Européen pour la Recherche Nucléaire}} ('European Council for Nuclear Research'), which was a provisional council for building the laboratory, established by 12 European governments in 1952. During these early years, the council worked at the [[University of Copenhagen]] under the direction of [[Niels Bohr]] before moving to its present site near Geneva.<ref>{{Cite book|last=Krige|first=John|url=https://books.google.com/books?id=yzE9AQAAIAAJ&q=oern|title=From the Provisional Organization to the Permanent CERN, May 1952 – September 1954: A survey of developments|publisher=Study Team for CERN History|year=1985|pages=5|language=en}}</ref><ref>{{Cite web|last=Dakin|first=S. A. ff.|date=2 November 1954|title=Conflict between title and initials of the Organization|url=https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-date=2022-10-09 |url-status=live}}</ref>


The acronym was retained for the new laboratory after the provisional council was dissolved, even though the name changed to the current {{lang|fr|Organisation européenne pour la recherche nucléaire}} ('European Organization for Nuclear Research') in 1954.<ref>{{Cite book|last=Krige|first=John|url=https://books.google.com/books?id=yzE9AQAAIAAJ&q=oern|title=From the Provisional Organization to the Permanent CERN, May 1952 – September 1954: A survey of developments|publisher=Study Team for CERN History|year=1985|pages=5|language=en}}</ref><ref>{{Cite web|last=Dakin|first=S. A. ff.|date=2 November 1954|title=Conflict between title and initials of the Organization|url=https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-date=2022-10-09 |url-status=live}}</ref> According to [[Lew Kowarski]], a former director of CERN, when the name was changed, the abbreviation could have become the awkward OERN,<ref>{{Cite book|last=Fraser|first=Gordon|url=https://books.google.com/books?id=xwGhmwYyDLQC&q=%22OERN%22+heisenberg&pg=PA229|title=The Quantum Exodus: Jewish Fugitives, the Atomic Bomb, and the Holocaust|publisher=OUP Oxford|year=2012|isbn=978-0-19-162751-4|language=en}}</ref> and [[Werner Heisenberg]] said that this could "still be CERN even if the name is [not]".<ref>{{Cite web|date=2015-03-20|title=Lew Kowarski – Session VI|url=https://www.aip.org/history-programs/niels-bohr-library/oral-histories/4717-6|access-date=2021-02-08|website=www.aip.org|language=en}}</ref>
The acronym was retained for the new laboratory after the provisional council was dissolved, even though the name changed to the current {{lang|fr|Organisation européenne pour la recherche nucléaire}} ('European Organization for Nuclear Research') in 1954.<ref>{{Cite book|last=Krige|first=John|url=https://books.google.com/books?id=yzE9AQAAIAAJ&q=oern|title=From the Provisional Organization to the Permanent CERN, May 1952 – September 1954: A survey of developments|publisher=Study Team for CERN History|year=1985|page=5|language=en}}</ref><ref>{{Cite web|last=Dakin|first=S. A. ff.|date=2 November 1954|title=Conflict between title and initials of the Organization|url=https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://cds.cern.ch/record/59712/files/Memo%202%20November%201954%20.pdf |archive-date=2022-10-09 |url-status=live}}</ref> According to [[Lew Kowarski]], a former director of CERN, when the name was changed, the abbreviation could have become the awkward OERN,<ref>{{Cite book|last=Fraser|first=Gordon|url=https://books.google.com/books?id=xwGhmwYyDLQC&q=%22OERN%22+heisenberg&pg=PA229|title=The Quantum Exodus: Jewish Fugitives, the Atomic Bomb, and the Holocaust|publisher=OUP Oxford|year=2012|isbn=978-0-19-162751-4|language=en}}</ref> and [[Werner Heisenberg]] said that this could "still be CERN even if the name is [not]".<ref>{{Cite web|date=2015-03-20|title=Lew Kowarski – Session VI|url=https://www.aip.org/history-programs/niels-bohr-library/oral-histories/4717-6|access-date=2021-02-08|website=www.aip.org|language=en}}</ref>


CERN's first president was Sir [[Ben Lockspeiser|Benjamin Lockspeiser]]. [[Edoardo Amaldi]] was the general secretary of CERN at its early stages when operations were still provisional, and the first Director-General (1954) was [[Felix Bloch]].<ref>{{Cite journal|url=https://cds.cern.ch/record/1730968 |title=People and things: Felix Bloch |access-date=1 September 2015 |journal=CERN Courier |year=1983 }}</ref>
CERN's first president was Sir [[Ben Lockspeiser|Benjamin Lockspeiser]]. [[Edoardo Amaldi]] was the general secretary of CERN at its early stages when operations were still provisional, and the first Director-General (1954) was [[Felix Bloch]].<ref>{{Cite journal|url=https://cds.cern.ch/record/1730968 |title=People and things: Felix Bloch |access-date=1 September 2015 |journal=CERN Courier |year=1983 }}</ref>
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=== Founding members ===
=== Founding members ===
[[File:Cernfounders.png|thumb|upright=0.95|The 12 founding member states of CERN in 1954<ref name="foundation">{{cite web|url=https://public.web.cern.ch/public/en/About/History54-en.html |title=CERN.ch |publisher=CERN |access-date=20 November 2010}}</ref>]]
At the sixth session of the CERN Council in Paris from 29 June to 1 July 1953, the convention establishing the organization was signed, subject to ratification, by 12 states. The convention was gradually ratified by the 12 founding Member States: Belgium, Denmark, France, the [[West Germany|Federal Republic of Germany]], Greece, Italy, the Netherlands, Norway, Sweden, Switzerland, the United Kingdom, and [[SFR Yugoslavia|Yugoslavia]].<ref>{{Cite book|url=https://cds.cern.ch/record/17750/|title=6th Session of the European Council for Nuclear Research, 29–30 Jun 1953: Minutes |publisher=CERN | location=Paris|date=28 September 2023}}</ref>
At the sixth session of the CERN Council in Paris from 29 June to 1 July 1953, the convention establishing the organization was signed, subject to ratification, by 12 states. The convention was gradually ratified by the 12 founding Member States: Belgium, Denmark, France, the [[West Germany|Federal Republic of Germany]], Greece, Italy, the Netherlands, Norway, Sweden, Switzerland, the United Kingdom, and [[SFR Yugoslavia|Yugoslavia]].<ref>{{Cite book|url=https://cds.cern.ch/record/17750/|title=6th Session of the European Council for Nuclear Research, 29–30 Jun 1953: Minutes |publisher=CERN | location=Paris|date=28 September 2023}}</ref>


=== Scientific achievements ===
=== Scientific achievements ===
Several important achievements in particle physics have been made through experiments at CERN. They include:
Several major achievements in particle physics have occurred in experiments at CERN. They include:
* 1973: The discovery of [[neutral current]]s in the [[Gargamelle]] bubble chamber;<ref name=":1">{{Cite book|url=https://link.springer.com/10.1007/978-3-662-12779-7|title=Prestigious discoveries at CERN|publisher=Springer Berlin Heidelberg|year=2003|isbn=978-3-642-05855-4|editor-last=Cashmore|editor-first=Roger|location=Berlin & Heidelberg|language=en|doi=10.1007/978-3-662-12779-7|editor-last2=Maiani|editor-first2=Luciano|editor-last3=Revol|editor-first3=Jean-Pierre}}</ref>
* 1973: The discovery of [[neutral current]]s in the [[Gargamelle]] bubble chamber;<ref name=":1">{{Cite book|url=https://link.springer.com/10.1007/978-3-662-12779-7|title=Prestigious discoveries at CERN|publisher=Springer Berlin Heidelberg|year=2003|isbn=978-3-642-05855-4|editor-last=Cashmore|editor-first=Roger|location=Berlin & Heidelberg|language=en|doi=10.1007/978-3-662-12779-7|editor-last2=Maiani|editor-first2=Luciano|editor-last3=Revol|editor-first3=Jean-Pierre}}</ref>
* 1983: The discovery of [[W and Z bosons]] in the [[UA1 experiment|UA1]] and [[UA2 experiment]]s;<ref name=":1" />
* 1983: The discovery of [[W and Z bosons]] in the [[UA1 experiment|UA1]] and [[UA2 experiment]]s;<ref name=":1" />
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* 1999: The discovery of direct [[CP violation]] in the [[NA48 experiment]];<ref name="NA48">{{cite journal |last1=Fanti |first1=V. |title=A new measurement of direct CP violation in two pion decays of the neutral kaon|journal=[[Physics Letters B]] |volume=465 |issue=1–4 |pages=335–348 |year=1999 |arxiv=hep-ex/9909022 |bibcode = 1999PhLB..465..335F |doi = 10.1016/S0370-2693(99)01030-8 |display-authors=1 |last2=Lai |first2=A. |last3=Marras |first3=D. |last4=Musa |first4=L. |last5=Bevan |first5=A.J. |last6=Gershon |first6=T.J. |last7=Hay |first7=B. |last8=Moore |first8=R.W. |last9=Moore |first9=K.N.|last10=Munday |first10=D.J. |last11=Needham |first11=M.D. |last12=Parker |first12=M.A. |last13=Takach |first13=S.F. |last14=White |first14=T.O. |last15=Wotton |first15=S.A. |last16=Barr |first16=G. |last17=Blümer |first17=H. |last18=Bocquet |first18=G. |last19=Bremer |first19=J. |last20=Ceccucci |first20=A. |last21=Cogan |first21=J. |last22=Cundy |first22=D. |last23=Doble |first23=N. |last24=Funk |first24=W. |last25=Gatignon |first25=L. |last26=Gianoli |first26=A. |last27=Gonidec |first27=A. |last28=Govi |first28=G. |last29=Grafström |first29=P. |last30=Kesseler |first30=G. |hdl=11577/2490003 |url=https://na48.web.cern.ch/NA48/Welcome/papers/eprime97/eprime97.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://na48.web.cern.ch/NA48/Welcome/papers/eprime97/eprime97.pdf |archive-date=2022-10-09 |url-status=live|citeseerx=10.1.1.34.322 |s2cid=15277360 }}</ref>
* 1999: The discovery of direct [[CP violation]] in the [[NA48 experiment]];<ref name="NA48">{{cite journal |last1=Fanti |first1=V. |title=A new measurement of direct CP violation in two pion decays of the neutral kaon|journal=[[Physics Letters B]] |volume=465 |issue=1–4 |pages=335–348 |year=1999 |arxiv=hep-ex/9909022 |bibcode = 1999PhLB..465..335F |doi = 10.1016/S0370-2693(99)01030-8 |display-authors=1 |last2=Lai |first2=A. |last3=Marras |first3=D. |last4=Musa |first4=L. |last5=Bevan |first5=A.J. |last6=Gershon |first6=T.J. |last7=Hay |first7=B. |last8=Moore |first8=R.W. |last9=Moore |first9=K.N.|last10=Munday |first10=D.J. |last11=Needham |first11=M.D. |last12=Parker |first12=M.A. |last13=Takach |first13=S.F. |last14=White |first14=T.O. |last15=Wotton |first15=S.A. |last16=Barr |first16=G. |last17=Blümer |first17=H. |last18=Bocquet |first18=G. |last19=Bremer |first19=J. |last20=Ceccucci |first20=A. |last21=Cogan |first21=J. |last22=Cundy |first22=D. |last23=Doble |first23=N. |last24=Funk |first24=W. |last25=Gatignon |first25=L. |last26=Gianoli |first26=A. |last27=Gonidec |first27=A. |last28=Govi |first28=G. |last29=Grafström |first29=P. |last30=Kesseler |first30=G. |hdl=11577/2490003 |url=https://na48.web.cern.ch/NA48/Welcome/papers/eprime97/eprime97.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://na48.web.cern.ch/NA48/Welcome/papers/eprime97/eprime97.pdf |archive-date=2022-10-09 |url-status=live|citeseerx=10.1.1.34.322 |s2cid=15277360 }}</ref>
* 2000: The Heavy Ion Programme discovered a new state of matter, [[quark–gluon plasma]].<ref>{{cite web |title=New State of Matter created at CERN |url=https://home.cern/news/press-release/cern/new-state-matter-created-cern |access-date=2021-07-30 |website=CERN |language=en}}</ref>
* 2000: The Heavy Ion Programme discovered a new state of matter, [[quark–gluon plasma]].<ref>{{cite web |title=New State of Matter created at CERN |url=https://home.cern/news/press-release/cern/new-state-matter-created-cern |access-date=2021-07-30 |website=CERN |language=en}}</ref>
* 2010: The isolation of 38 atoms of [[antihydrogen]];<ref>{{cite journal|last=Reich|first=Eugenie Samuel|year=2010|title=Antimatter held for questioning|journal=Nature|language=en|volume=468|issue=7322|pages=355|doi=10.1038/468355a|pmid=21085144|bibcode=2010Natur.468..355R|s2cid=4428830|issn=0028-0836|doi-access=free}}</ref><ref name="Antihydrogen">{{cite news |author=Shaikh |first=Thair |date=18 November 2010 |title=Scientists capture antimatter atoms in particle breakthrough |publisher=CNN |url=https://edition.cnn.com/2010/WORLD/europe/11/18/switzerland.cern.antimatter/?hpt=Mid}}</ref>
* 2010: The isolation of 38 atoms of [[antihydrogen]];<ref>{{cite journal|last=Reich|first=Eugenie Samuel|year=2010|title=Antimatter held for questioning|journal=Nature|language=en|volume=468|issue=7322|page=355|doi=10.1038/468355a|pmid=21085144|bibcode=2010Natur.468..355R|s2cid=4428830|issn=0028-0836|doi-access=free}}</ref><ref name="Antihydrogen">{{cite news |author=Shaikh |first=Thair |date=18 November 2010 |title=Scientists capture antimatter atoms in particle breakthrough |publisher=CNN |url=https://edition.cnn.com/2010/WORLD/europe/11/18/switzerland.cern.antimatter/?hpt=Mid}}</ref>
* 2011: Maintaining [[antihydrogen]] for over 15 minutes;<ref>{{cite journal |last=Matson |first=John |year=2011 |title=Antimatter trapped for more than 15 minutes |url=https://www.nature.com/articles/news.2011.349 |journal=Nature |language=en |pages=news.2011.349 |doi=10.1038/news.2011.349 |issn=0028-0836 |doi-access=free}}</ref><ref>{{cite web |author=Amos |first=Jonathan |date=6 June 2011 |title=Antimatter atoms are corralled even longer |url=https://www.bbc.com/news/science-environment-13666892 |publisher=BBC}}</ref>
* 2011: Maintaining [[antihydrogen]] for over 15 minutes;<ref>{{cite journal |last=Matson |first=John |year=2011 |title=Antimatter trapped for more than 15 minutes |url=https://www.nature.com/articles/news.2011.349 |journal=Nature |language=en |article-number=news.2011.349 |doi=10.1038/news.2011.349 |issn=0028-0836 |doi-access=free}}</ref><ref>{{cite web |author=Amos |first=Jonathan |date=6 June 2011 |title=Antimatter atoms are corralled even longer |url=https://www.bbc.com/news/science-environment-13666892 |publisher=BBC}}</ref>
* 2012: The discovery of a [[boson]] with mass around {{val|125|u=GeV/c2}} consistent with the long-sought [[Higgs boson]].<ref>{{Cite book |last=Randall |first=Lisa |url=https://books.google.com/books?id=qcL1D2vlMKoC |title=Higgs Discovery: The Power of Empty Space |year=2012 |publisher=Random House |isbn=978-1-4481-6116-4 |language=en}}</ref><ref>{{Cite journal |last1=Aad |first1=G. |last2=Abajyan |first2=T. |last3=Abbott |first3=B. |last4=Abdallah |first4=J. |last5=Abdel Khalek |first5=S. |last6=Abdelalim |first6=A.A. |last7=Abdinov |first7=O. |last8=Aben |first8=R. |last9=Abi |first9=B. |last10=Abolins |first10=M. |last11=AbouZeid |first11=O.S. |year=2012 |title=Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC |url=https://linkinghub.elsevier.com/retrieve/pii/S037026931200857X |journal=Physics Letters B |language=en |volume=716 |issue=1 |pages=1–29 |doi=10.1016/j.physletb.2012.08.020 |arxiv=1207.7214 |bibcode=2012PhLB..716....1A |s2cid=119169617}}</ref><ref>{{Cite journal |year=2012 |title=Observation of a new boson at a mass of 125&nbsp;GeV with the CMS experiment at the LHC |url=https://www.sciencedirect.com/science/article/pii/S0370269312008581 |journal=Physics Letters B |language=en |volume=716 |issue=1 |pages=30–61 |doi=10.1016/j.physletb.2012.08.021 |issn=0370-2693 |last1=Chatrchyan |first1=S. |last2=Khachatryan |first2=V. |last3=Sirunyan |first3=A.M. |last4=Tumasyan |first4=A. |last5=Adam |first5=W. |last6=Aguilo |first6=E. |last7=Bergauer |first7=T. |last8=Dragicevic |first8=M. |last9=Erö |first9=J. |last10=Fabjan |first10=C. |last11=Friedl |first11=M. |last12=Frühwirth |first12=R. |last13=Ghete |first13=V.M. |last14=Hammer |first14=J. |last15=Hoch |first15=M. |last16=Hörmann |first16=N. |last17=Hrubec |first17=J. |last18=Jeitler |first18=M. |last19=Kiesenhofer |first19=W. |last20=Knünz |first20=V. |last21=Krammer |first21=M. |last22=Krätschmer |first22=I. |last23=Liko |first23=D. |last24=Majerotto |first24=W. |last25=Mikulec |first25=I. |last26=Pernicka |first26=M. |last27=Rahbaran |first27=B. |last28=Rohringer |first28=C. |last29=Rohringer |first29=H. |last30=Schöfbeck |first30=R. |arxiv=1207.7235 |bibcode=2012PhLB..716...30C |display-authors=1}}</ref>
* 2012: The discovery of a [[boson]] with mass around {{val|125|u=GeV/c2}} consistent with the long-sought [[Higgs boson]].<ref>{{Cite book |last=Randall |first=Lisa |url=https://books.google.com/books?id=qcL1D2vlMKoC |title=Higgs Discovery: The Power of Empty Space |year=2012 |publisher=Random House |isbn=978-1-4481-6116-4 |language=en}}</ref><ref>{{Cite journal |last1=Aad |first1=G. |last2=Abajyan |first2=T. |last3=Abbott |first3=B. |last4=Abdallah |first4=J. |last5=Abdel Khalek |first5=S. |last6=Abdelalim |first6=A.A. |last7=Abdinov |first7=O. |last8=Aben |first8=R. |last9=Abi |first9=B. |last10=Abolins |first10=M. |last11=AbouZeid |first11=O.S. |year=2012 |title=Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC |url=https://linkinghub.elsevier.com/retrieve/pii/S037026931200857X |journal=Physics Letters B |language=en |volume=716 |issue=1 |pages=1–29 |doi=10.1016/j.physletb.2012.08.020 |arxiv=1207.7214 |bibcode=2012PhLB..716....1A |s2cid=119169617}}</ref><ref>{{Cite journal |year=2012 |title=Observation of a new boson at a mass of 125&nbsp;GeV with the CMS experiment at the LHC |url=https://www.sciencedirect.com/science/article/pii/S0370269312008581 |journal=Physics Letters B |language=en |volume=716 |issue=1 |pages=30–61 |doi=10.1016/j.physletb.2012.08.021 |issn=0370-2693 |last1=Chatrchyan |first1=S. |last2=Khachatryan |first2=V. |last3=Sirunyan |first3=A.M. |last4=Tumasyan |first4=A. |last5=Adam |first5=W. |last6=Aguilo |first6=E. |last7=Bergauer |first7=T. |last8=Dragicevic |first8=M. |last9=Erö |first9=J. |last10=Fabjan |first10=C. |last11=Friedl |first11=M. |last12=Frühwirth |first12=R. |last13=Ghete |first13=V.M. |last14=Hammer |first14=J. |last15=Hoch |first15=M. |last16=Hörmann |first16=N. |last17=Hrubec |first17=J. |last18=Jeitler |first18=M. |last19=Kiesenhofer |first19=W. |last20=Knünz |first20=V. |last21=Krammer |first21=M. |last22=Krätschmer |first22=I. |last23=Liko |first23=D. |last24=Majerotto |first24=W. |last25=Mikulec |first25=I. |last26=Pernicka |first26=M. |last27=Rahbaran |first27=B. |last28=Rohringer |first28=C. |last29=Rohringer |first29=H. |last30=Schöfbeck |first30=R. |arxiv=1207.7235 |bibcode=2012PhLB..716...30C |display-authors=1 |hdl=11384/61020 }}</ref>


In September 2011, CERN attracted media attention when the [[OPERA experiment|OPERA Collaboration]] reported the detection of possibly [[Faster-than-light neutrino anomaly|faster-than-light neutrinos]].<ref>Adrian Cho, [https://www.science.org/content/article/neutrinos-travel-faster-light-according-one-experiment "Neutrinos Travel Faster Than Light, According to One Experiment"], [[Science (journal)#Availability|Science NOW]], 22 September 2011.</ref> Further tests showed that the results were flawed due to an incorrectly connected [[GPS]] synchronization cable.<ref name="OPERAanomaly">{{cite web|url=https://press.cern/press-releases/2011/09/opera-experiment-reports-anomaly-flight-time-neutrinos-cern-gran-sasso|title=OPERA experiment reports anomaly in flight time of neutrinos from CERN to Gran Sasso |publisher=CERN |access-date=12 November 2016}}</ref>
In September 2011, CERN attracted media attention when the [[OPERA experiment|OPERA Collaboration]] reported the detection of possibly [[Faster-than-light neutrino anomaly|faster-than-light neutrinos]].<ref>Adrian Cho, [https://www.science.org/content/article/neutrinos-travel-faster-light-according-one-experiment "Neutrinos Travel Faster Than Light, According to One Experiment"], [[Science (journal)#Availability|Science NOW]], 22 September 2011.</ref> Further tests showed that the results were flawed due to an incorrectly connected [[GPS]] synchronization cable.<ref name="OPERAanomaly">{{cite web|url=https://press.cern/press-releases/2011/09/opera-experiment-reports-anomaly-flight-time-neutrinos-cern-gran-sasso|title=OPERA experiment reports anomaly in flight time of neutrinos from CERN to Gran Sasso |publisher=CERN |access-date=12 November 2016}}</ref>
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CERN pioneered the introduction of [[TCP/IP]] for its [[intranet]], beginning in 1984. This played an influential role in the adoption of the TCP/IP in Europe (see [[History of the Internet]] and [[Protocol Wars]]).<ref>{{Cite journal |last=Segal |first=Ben |date=1995 |title=A short history of Internet protocols at CERN |url=https://www.researchgate.net/publication/245061001 |journal=CERN}}</ref>
CERN pioneered the introduction of [[TCP/IP]] for its [[intranet]], beginning in 1984. This played an influential role in the adoption of the TCP/IP in Europe (see [[History of the Internet]] and [[Protocol Wars]]).<ref>{{Cite journal |last=Segal |first=Ben |date=1995 |title=A short history of Internet protocols at CERN |url=https://www.researchgate.net/publication/245061001 |journal=CERN}}</ref>


In 1989, the [[World Wide Web]] was invented at CERN by [[Tim Berners-Lee]]. Based on the concept of [[hypertext]], the idea was designed to facilitate information sharing between researchers.<ref name="TBL Web Proposal">{{cite web |last1=Berners-Lee |first1=Tim |title=Information Management: A Proposal |url=https://www.w3.org/History/1989/proposal.html |url-status=live |archive-url=https://web.archive.org/web/20100401051011/https://www.w3.org/History/1989/proposal.html |archive-date=1 April 2010 |access-date=12 February 2022 |website=w3.org |publisher=The World Wide Web Consortium}}</ref><ref>{{Cite web |date=2018-08-30 |title=The World's First Web Site |url=https://www.history.com/news/the-worlds-first-web-site |url-status=live |archive-url=https://web.archive.org/web/20230819131610/https://www.history.com/news/the-worlds-first-web-site |archive-date=19 August 2023 |access-date=2023-08-19 |website=HISTORY |language=en}}</ref> This stemmed from Berners-Lee's earlier work at CERN on a database named [[ENQUIRE]]. A colleague, [[Robert Cailliau]], became involved in 1990.<ref>{{Cite book|last=O'Regan|first=Gerard|url=https://books.google.com/books?id=oSq5BAAAQBAJ|title=Giants of Computing: A Compendium of Select, Pivotal Pioneers|publisher=Springer Science & Business Media|year=2013|isbn=978-1-4471-5340-5|language=en}}</ref><ref>{{Cite book|last=O'Regan|first=Gerard|url=https://link.springer.com/10.1007/978-3-030-02619-6|title=The Innovation in Computing Companion: A Compendium of Select, Pivotal Inventions|publisher=Springer International Publishing|year=2018|isbn=978-3-030-02618-9|location=Cham|language=en|doi=10.1007/978-3-030-02619-6|s2cid=54457158}}</ref><ref>{{Cite book|last=Scott|first=Virginia A.|url=https://books.google.com/books?id=UVz06fnwJvUC&q=ENQUIRE+cern+web&pg=PA19|title=Google|publisher=Greenwood Publishing Group|year=2008|isbn=978-0-313-35127-3|language=en}}</ref><ref>{{cite web|url=https://public.web.cern.ch/Public/en/About/WebStory-en.html |title=CERN.ch |publisher=CERN |access-date=20 November 2010}}</ref>  
In 1989, the [[World Wide Web]] was invented at CERN by [[Tim Berners-Lee]]. Based on the concept of [[hypertext]], the idea was designed to facilitate information sharing between researchers.<ref name="TBL Web Proposal">{{cite web |last1=Berners-Lee |first1=Tim |title=Information Management: A Proposal |url=https://www.w3.org/History/1989/proposal.html |url-status=live |archive-url=https://web.archive.org/web/20100401051011/https://www.w3.org/History/1989/proposal.html |archive-date=1 April 2010 |access-date=12 February 2022 |website=w3.org |publisher=The World Wide Web Consortium}}</ref><ref>{{Cite web |date=2018-08-30 |title=The World's First Web Site |url=https://www.history.com/news/the-worlds-first-web-site |url-status=live |archive-url=https://web.archive.org/web/20230819131610/https://www.history.com/news/the-worlds-first-web-site |archive-date=19 August 2023 |access-date=2023-08-19 |website=HISTORY |language=en}}</ref> This stemmed from Berners-Lee's earlier work at CERN on a database named [[ENQUIRE]]. A colleague, [[Robert Cailliau]], became involved in 1990.<ref>{{Cite book|last=O'Regan|first=Gerard|url=https://books.google.com/books?id=oSq5BAAAQBAJ|title=Giants of Computing: A Compendium of Select, Pivotal Pioneers|publisher=Springer Science & Business Media|year=2013|isbn=978-1-4471-5340-5|language=en}}</ref><ref>{{Cite book|last=O'Regan|first=Gerard|url=https://link.springer.com/10.1007/978-3-030-02619-6|title=The Innovation in Computing Companion: A Compendium of Select, Pivotal Inventions|publisher=Springer International Publishing|year=2018|isbn=978-3-030-02618-9|location=Cham|language=en|doi=10.1007/978-3-030-02619-6|s2cid=54457158}}</ref><ref>{{cite web|url=https://public.web.cern.ch/Public/en/About/WebStory-en.html |title=CERN.ch |publisher=CERN |access-date=20 November 2010}}</ref>  


In 1995, Berners-Lee and Cailliau were jointly honoured by the [[Association for Computing Machinery]] for their contributions to the development of the World Wide Web.<ref>{{Cite web|title=Robert Cailliau|url=https://awards.acm.org/award_winners/cailliau_5353144|access-date=2021-02-28|website=awards.acm.org|language=en}}</ref> A copy of the first webpage, created by Berners-Lee, is still published on the [[World Wide Web Consortium]]'s website as a historical document.<ref>{{cite web|url=https://www.w3.org/History/19921103-hypertext/hypertext/WWW/TheProject.html |title=The World Wide Web project |publisher=W3C |access-date=20 November 2010}}</ref> The first website was activated in 1991. On 30 April 1993, CERN announced that the World Wide Web would be free to anyone. It became the dominant way through which most users interact with the [[Internet]].<ref>{{Cite web |last1=Ari-Pekka |first1=Hameri |last2=Nordberg |first2=Markus |date=1997 |title=From Experience: Linking Available Resources and Technologies to Create a Solution for Document Sharing The Early Years of the WWW |url=https://cds.cern.ch/record/371101/files/from%20experience_linking%20avalble%20resources.pdf}}</ref><ref>{{Cite web |last=Andrew |first=Oram |date=2021 |title=Open, Simple, Generative: Why the Web is the Dominant Internet Application |url=https://www.lpi.org/blog/2021/08/17/open-simple-generative-why-web-dominant-internet-application/}}</ref>
In 1995, Berners-Lee and Cailliau were jointly honoured by the [[Association for Computing Machinery]] for their contributions to the development of the World Wide Web.<ref>{{Cite web|title=Robert Cailliau|url=https://awards.acm.org/award_winners/cailliau_5353144|access-date=2021-02-28|website=awards.acm.org|language=en}}</ref> A copy of the first webpage, created by Berners-Lee, is still published on the [[World Wide Web Consortium]]'s website as a historical document.<ref>{{cite web|url=https://www.w3.org/History/19921103-hypertext/hypertext/WWW/TheProject.html |title=The World Wide Web project |publisher=W3C |access-date=20 November 2010}}</ref> The first website was activated in 1991. On 30 April 1993, CERN announced that the World Wide Web would be free to anyone.<ref>{{Cite web |title=30 years of the web: a short history of the invention that changed the world |url=https://www.britishcouncil.org/anyone-anywhere/history-web |access-date=19 September 2025 |website=British Council |quote=Berners-Lee and others worked to ensure that CERN would make the underlying code available on a royalty-free basis, forever. This decision was announced in April 1993, and sparked a global wave of creativity, collaboration and innovation.}}</ref> It became the dominant way through which most users interact with the [[Internet]].<ref>{{Cite web |last1=Ari-Pekka |first1=Hameri |last2=Nordberg |first2=Markus |date=1997 |title=From Experience: Linking Available Resources and Technologies to Create a Solution for Document Sharing The Early Years of the WWW |url=https://cds.cern.ch/record/371101/files/from%20experience_linking%20avalble%20resources.pdf}}</ref><ref>{{Cite web |last=Andrew |first=Oram |date=2021 |title=Open, Simple, Generative: Why the Web is the Dominant Internet Application |url=https://www.lpi.org/blog/2021/08/17/open-simple-generative-why-web-dominant-internet-application/}}</ref>


More recently, CERN has become a facility for the development of [[grid computing]], hosting projects including the [[Enabling Grids for E-sciencE]] (EGEE) and [[LHC Computing Grid]]. It also hosts the [[CERN Internet Exchange Point]] (CIXP), one of the two main [[internet exchange point]]s in Switzerland. {{As of|2022}}, CERN employs ten times more engineers and technicians than research physicists.<ref>{{cite web|title=Engineering at CERN|url=https://home.cern/science/engineering|website=home.cern}}</ref>
More recently, CERN has become a facility for the development of [[grid computing]], hosting projects including the [[Enabling Grids for E-sciencE]] (EGEE) and [[LHC Computing Grid]]. It also hosts the [[CERN Internet Exchange Point]] (CIXP), one of the two main [[internet exchange point]]s in Switzerland. {{As of|2022}}, CERN employs ten times more engineers and technicians than research physicists.<ref>{{cite web|title=Engineering at CERN|url=https://home.cern/science/engineering|website=home.cern}}</ref>
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CERN operates a network of seven accelerators and two decelerators, and some additional small accelerators. Each machine in the chain increases the energy of particle beams before delivering them to experiments or to the next more powerful accelerator. The decelerators naturally decrease the energy of particle beams before delivering them to experiments or further accelerators/decelerators. Before an experiment is able to use the network of accelerators, it must be approved by the various [[List of CERN Scientific Committees|Scientific Committees of CERN]].<ref name=":32">{{Cite web |title=CERN Scientific Committees {{!}} CERN Scientific Information Service (SIS) |url=https://scientific-info.cern/archives/history_CERN/Scientific_committees |access-date=2023-08-25 |website=scientific-info.cern}}</ref> Currently (as of 2022) active machines are the LHC accelerator and:
CERN operates a network of seven accelerators and two decelerators, and some additional small accelerators. Each machine in the chain increases the energy of particle beams before delivering them to experiments or to the next more powerful accelerator. The decelerators naturally decrease the energy of particle beams before delivering them to experiments or further accelerators/decelerators. Before an experiment is able to use the network of accelerators, it must be approved by the various [[List of CERN Scientific Committees|Scientific Committees of CERN]].<ref name=":32">{{Cite web |title=CERN Scientific Committees {{!}} CERN Scientific Information Service (SIS) |url=https://scientific-info.cern/archives/history_CERN/Scientific_committees |access-date=2023-08-25 |website=scientific-info.cern}}</ref> Currently (as of 2022) active machines are the LHC accelerator and:
* The [[LINAC 3]] [[linear accelerator]] generating low energy particles. It provides heavy ions at 4.2&nbsp;MeV/[[Dalton (unit)|Da]] for injection into the Low Energy Ion Ring (LEIR).<ref>{{cite web |url=https://linac2.home.cern.ch/linac2/default.htm |title=CERN Website – LINAC |publisher=CERN |access-date=20 November 2010 |archive-url=https://web.archive.org/web/20131027143216/https://linac2.home.cern.ch/linac2/default.htm |archive-date=27 October 2013 |url-status=dead }}</ref>
* The [[LINAC 3]] [[linear accelerator]] generating low energy particles. It provides heavy ions at 4.2&nbsp;MeV/[[Dalton (unit)|Da]] for injection into the Low Energy Ion Ring (LEIR).<ref>{{cite web |url=https://linac2.home.cern.ch/linac2/default.htm |title=CERN Website – LINAC |publisher=CERN |access-date=20 November 2010 |archive-url=https://web.archive.org/web/20131027143216/https://linac2.home.cern.ch/linac2/default.htm |archive-date=27 October 2013 }}</ref>
* The [[Low Energy Ion Ring]] (LEIR) accelerates the ions from the ion linear accelerator LINAC&nbsp;3, before transferring them to the [[Proton Synchrotron]] (PS). This [[Particle accelerator|accelerator]] was commissioned in 2005, after having been reconfigured from the previous [[Low Energy Antiproton Ring]] (LEAR).<ref name="Chanel 2004 137–143">{{Cite journal|last=Chanel|first=Michel|year=2004|title=LEIR: the low energy ion ring at CERN|url=https://linkinghub.elsevier.com/retrieve/pii/S0168900204011994|journal=Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|language=en|volume=532|issue=1–2|pages=137–143|doi=10.1016/j.nima.2004.06.040|bibcode=2004NIMPA.532..137C}}</ref><ref>{{Cite book|last=Hübner|first=K.|url=https://cds.cern.ch/record/1058082|title=Fifty years of research at CERN, from past to future: The Accelerators|publisher=CERN|year=2006|doi=10.5170/cern-2006-004.1}}</ref>
* The [[Low Energy Ion Ring]] (LEIR) accelerates the ions from the ion linear accelerator LINAC&nbsp;3, before transferring them to the [[Proton Synchrotron]] (PS). This [[Particle accelerator|accelerator]] was commissioned in 2005, after having been reconfigured from the previous [[Low Energy Antiproton Ring]] (LEAR).<ref name="Chanel 2004 137–143">{{Cite journal|last=Chanel|first=Michel|year=2004|title=LEIR: the low energy ion ring at CERN|url=https://linkinghub.elsevier.com/retrieve/pii/S0168900204011994|journal=Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|language=en|volume=532|issue=1–2|pages=137–143|doi=10.1016/j.nima.2004.06.040|bibcode=2004NIMPA.532..137C}}</ref><ref>{{Cite book|last=Hübner|first=K.|url=https://cds.cern.ch/record/1058082|title=Fifty years of research at CERN, from past to future: The Accelerators|publisher=CERN|year=2006|doi=10.5170/cern-2006-004.1}}</ref>
* The [[Linac4]] [[linear accelerator]] accelerates negative hydrogen ions to an energy of 160&nbsp;eV. The ions are then injected to the Proton Synchrotron Booster (PSB) where both electrons are then stripped from each of the hydrogen ions and thus only the nucleus containing one proton remains. The protons are then used in experiments or accelerated further in other CERN accelerators. Linac4 serves as the source of all proton beams for CERN experiments.<ref>{{cite web |url=https://cerncourier.com/a/lhc-run-3-the-final-countdown/ |title=LHC Run 3: the final countdown |work=CERN Courier |date=18 February 2022 |access-date=22 March 2022}}</ref>
* The [[Linac4]] [[linear accelerator]] accelerates negative hydrogen ions to an energy of 160&nbsp;eV. The ions are then injected to the Proton Synchrotron Booster (PSB) where both electrons are then stripped from each of the hydrogen ions and thus only the nucleus containing one proton remains. The protons are then used in experiments or accelerated further in other CERN accelerators. Linac4 serves as the source of all proton beams for CERN experiments.<ref>{{cite web |url=https://cerncourier.com/a/lhc-run-3-the-final-countdown/ |title=LHC Run 3: the final countdown |work=CERN Courier |date=18 February 2022 |access-date=22 March 2022}}</ref>
* The [[Proton Synchrotron Booster]] increases the energy of particles generated by the proton linear accelerator before they are transferred to the other accelerators.<ref>{{cite journal |last=Hanke |first=K. |year=2013 |title=Past and present operation of the CERN PS Booster|url=https://www.worldscientific.com/doi/abs/10.1142/S0217751X13300196|journal=International Journal of Modern Physics A |language=en |volume=28 |issue=13 |pages=1330019 |doi=10.1142/S0217751X13300196 |bibcode=2013IJMPA..2830019H |issn=0217-751X |url-access=subscription}}</ref>
* The [[Proton Synchrotron Booster]] increases the energy of particles generated by the proton linear accelerator before they are transferred to the other accelerators.<ref>{{cite journal |last=Hanke |first=K. |year=2013 |title=Past and present operation of the CERN PS Booster|url=https://www.worldscientific.com/doi/abs/10.1142/S0217751X13300196|journal=International Journal of Modern Physics A |language=en |volume=28 |issue=13 |page=1330019 |doi=10.1142/S0217751X13300196 |bibcode=2013IJMPA..2830019H |issn=0217-751X |url-access=subscription}}</ref>
* The 28&nbsp;[[Gigaelectronvolt|GeV]] [[Proton Synchrotron]] (PS), built during 1954–1959 and still operating as a feeder to the more powerful [[Super Proton Synchrotron|SPS]] and to many of CERN's experiments.<ref>{{Citation|last=Plass|first=Günther|title=The CERN Proton Synchrotron: 50 Years of Reliable Operation and Continued Development|url=https://link.springer.com/10.1007/978-3-642-30844-4_2|work=From the PS to the LHC – 50 Years of Nobel Memories in High-Energy Physics|pages=29–47|year=2012|editor-last=Alvarez-Gaumé|editor-first=Luis|place=Berlin & Heidelberg|publisher=Springer Berlin Heidelberg|language=en|doi=10.1007/978-3-642-30844-4_2|bibcode=2012fpl..book...29P|isbn=978-3-642-30843-7|access-date=2021-02-28|editor2-last=Mangano|editor2-first=Michelangelo|editor3-last=Tsesmelis|editor3-first=Emmanuel|url-access=subscription}}</ref>
* The 28&nbsp;[[Gigaelectronvolt|GeV]] [[Proton Synchrotron]] (PS), built during 1954–1959 and still operating as a feeder to the more powerful [[Super Proton Synchrotron|SPS]] and to many of CERN's experiments.<ref>{{Citation|last=Plass|first=Günther|title=The CERN Proton Synchrotron: 50 Years of Reliable Operation and Continued Development|url=https://link.springer.com/10.1007/978-3-642-30844-4_2|work=From the PS to the LHC – 50 Years of Nobel Memories in High-Energy Physics|pages=29–47|year=2012|editor-last=Alvarez-Gaumé|editor-first=Luis|place=Berlin & Heidelberg|publisher=Springer Berlin Heidelberg|language=en|doi=10.1007/978-3-642-30844-4_2|bibcode=2012fpl..book...29P|isbn=978-3-642-30843-7|access-date=2021-02-28|editor2-last=Mangano|editor2-first=Michelangelo|editor3-last=Tsesmelis|editor3-first=Emmanuel|url-access=subscription}}</ref>
* The [[Super Proton Synchrotron]] (SPS), a circular accelerator with a diameter of 2 kilometres built in a tunnel, which started operation in 1976. It was designed to deliver an energy of 300&nbsp;GeV and was gradually upgraded to 450&nbsp;GeV. As well as having its own beamlines for fixed-target experiments (currently [[COMPASS experiment|COMPASS]] and [[NA62 experiment|NA62]]), it has been operated as a [[proton]]–[[antiproton]] [[collider]] (the Sp{{overline|p}}S collider), and for accelerating high energy [[electron]]s and [[positron]]s which were injected into the [[Large Electron–Positron Collider]] (LEP). Since 2008, it has been used to inject protons and [[heavy ion]]s into the [[Large Hadron Collider]] (LHC).<ref>{{Cite book|last=Hatton|first=V.|title=Conference Record of the 1991 IEEE Particle Accelerator Conference |chapter=Operational history of the SPS collider 1981–1990 |year=1991|chapter-url=https://ieeexplore.ieee.org/document/165151|location=San Francisco|publisher=IEEE|pages=2952–2954|doi=10.1109/PAC.1991.165151|bibcode=1991pac..conf.2952H|isbn=978-0-7803-0135-1|s2cid=33676121}}</ref><ref>{{Cite book|last1=Watkins|first1=Peter|url=https://books.google.com/books?id=J808AAAAIAAJ|title=Story of the W and Z|last2=Watkins|publisher=CUP Archive|year=1986|isbn=978-0-521-31875-4|language=en}}</ref><ref>{{Cite book|last1=Brüning|first1=Oliver|url=https://books.google.com/books?id=28DACwAAQBAJ|title=Challenges and Goals for Accelerators in the XXI Century|last2=Myers|first2=Stephen|publisher=World Scientific|year=2015|isbn=978-981-4436-40-3|language=en}}</ref>
* The [[Super Proton Synchrotron]] (SPS), a circular accelerator with a diameter of 2 kilometres built in a tunnel, which started operation in 1976. It was designed to deliver an energy of 300&nbsp;GeV and was gradually upgraded to 450&nbsp;GeV. As well as having its own beamlines for fixed-target experiments (currently [[COMPASS experiment|COMPASS]] and [[NA62 experiment|NA62]]), it has been operated as a [[proton]]–[[antiproton]] [[collider]] (the Sp{{overline|p}}S collider), and for accelerating high energy [[electron]]s and [[positron]]s which were injected into the [[Large Electron–Positron Collider]] (LEP). Since 2008, it has been used to inject protons and [[heavy ion]]s into the [[Large Hadron Collider]] (LHC).<ref>{{Cite book|last=Hatton|first=V.|title=Conference Record of the 1991 IEEE Particle Accelerator Conference |chapter=Operational history of the SPS collider 1981–1990 |year=1991|location=San Francisco|publisher=IEEE|pages=2952–2954|doi=10.1109/PAC.1991.165151|bibcode=1991pac..conf.2952H|isbn=978-0-7803-0135-1|s2cid=33676121}}</ref><ref>{{Cite book|last1=Watkins|first1=Peter|url=https://books.google.com/books?id=J808AAAAIAAJ|title=Story of the W and Z|last2=Watkins|publisher=CUP Archive|year=1986|isbn=978-0-521-31875-4|language=en}}</ref><ref>{{Cite book|last1=Brüning|first1=Oliver|url=https://books.google.com/books?id=28DACwAAQBAJ|title=Challenges and Goals for Accelerators in the XXI Century|last2=Myers|first2=Stephen|publisher=World Scientific|year=2015|isbn=978-981-4436-40-3|language=en}}</ref>
* The [[On-Line Isotope Mass Separator]] (ISOLDE), which is used to study [[radioactive decay|unstable nuclei]]. The radioactive ions are produced by the impact of protons at an energy of 1.0–1.4&nbsp;GeV from the Proton Synchrotron Booster. It was first commissioned in 1967 and was rebuilt with major upgrades in 1974 and 1992.<ref>{{Cite journal |last1=Borge |first1=Maria J. G. |last2=Jonson |first2=Björn |year=2017 |title=ISOLDE past, present and future |journal=Journal of Physics G: Nuclear and Particle Physics |volume=44 |issue=4 |pages=044011 |bibcode=2017JPhG...44d4011B |doi=10.1088/1361-6471/aa5f03 |issn=0954-3899|doi-access=free |hdl=10261/161319 |hdl-access=free }}</ref>
* The [[On-Line Isotope Mass Separator]] (ISOLDE), which is used to study [[radioactive decay|unstable nuclei]]. The radioactive ions are produced by the impact of protons at an energy of 1.0–1.4&nbsp;GeV from the Proton Synchrotron Booster. It was first commissioned in 1967 and was rebuilt with major upgrades in 1974 and 1992.<ref>{{Cite journal |last1=Borge |first1=Maria J. G. |last2=Jonson |first2=Björn |year=2017 |title=ISOLDE past, present and future |journal=Journal of Physics G: Nuclear and Particle Physics |volume=44 |issue=4 |page=044011 |bibcode=2017JPhG...44d4011B |doi=10.1088/1361-6471/aa5f03 |issn=0954-3899|doi-access=free |hdl=10261/161319 |hdl-access=free }}</ref>
* The [[Antiproton Decelerator]] (AD), which reduces the velocity of antiprotons to about 10% of the [[speed of light]] for research of [[antimatter]].<ref>{{Cite book|last1=Ajduk|first1=Zygmunt|url=https://books.google.com/books?id=Y5HsCgAAQBAJ&q=Antiproton+Decelerator&pg=PA1749|title=Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes)|last2=Wroblewski|first2=Andrzej Kajetan|publisher=World Scientific|year=1997|isbn=978-981-4547-10-9|pages=1749|language=en}}</ref> The AD machine was reconfigured from the previous [[Antiproton Collector]] (AC) machine.<ref>{{Cite journal|last1=Bartmann|first1=W.|last2=Belochitskii|first2=P.|last3=Breuker|first3=H.|last4=Butin|first4=F.|last5=Carli|first5=C.|last6=Eriksson|first6=T.|last7=Maury|first7=S.|last8=Oelert|first8=W.|last9=Pasinelli|first9=S.|last10=Tranquille|first10=G.|year=2014|title=Past, present and future low energy antiproton facilities at CERN|url=https://www.worldscientific.com/doi/abs/10.1142/S2010194514602610|journal=International Journal of Modern Physics: Conference Series|language=en|volume=30|pages=1460261|doi=10.1142/S2010194514602610|bibcode=2014IJMPS..3060261B|issn=2010-1945|url-access=subscription}}</ref>
* The [[Antiproton Decelerator]] (AD), which reduces the velocity of antiprotons to about 10% of the [[speed of light]] for research of [[antimatter]].<ref>{{Cite book|last1=Ajduk|first1=Zygmunt|url=https://books.google.com/books?id=Y5HsCgAAQBAJ&q=Antiproton+Decelerator&pg=PA1749|title=Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes)|last2=Wroblewski|first2=Andrzej Kajetan|publisher=World Scientific|year=1997|isbn=978-981-4547-10-9|page=1749|language=en}}</ref> The AD machine was reconfigured from the previous [[Antiproton Collector]] (AC) machine.<ref>{{Cite journal|last1=Bartmann|first1=W.|last2=Belochitskii|first2=P.|last3=Breuker|first3=H.|last4=Butin|first4=F.|last5=Carli|first5=C.|last6=Eriksson|first6=T.|last7=Maury|first7=S.|last8=Oelert|first8=W.|last9=Pasinelli|first9=S.|last10=Tranquille|first10=G.|year=2014|title=Past, present and future low energy antiproton facilities at CERN|url=https://www.worldscientific.com/doi/abs/10.1142/S2010194514602610|journal=International Journal of Modern Physics: Conference Series|language=en|volume=30|page=1460261|doi=10.1142/S2010194514602610|bibcode=2014IJMPS..3060261B|issn=2010-1945|url-access=subscription}}</ref>
* The [[Extra Low ENergy Antiproton ring (ELENA)|Extra Low Energy Antiproton ring]] (ELENA), which takes antiprotons from AD and decelerates them into low energies (speeds) for use in antimatter experiments.
* The [[Extra Low ENergy Antiproton ring (ELENA)|Extra Low Energy Antiproton ring]] (ELENA), which takes antiprotons from AD and decelerates them into low energies (speeds) for use in antimatter experiments.
* The [[AWAKE]] experiment, which is a proof-of-principle [[plasma acceleration|plasma wakefield accelerator]].<ref>{{Cite journal|last1=Adli|first1=E.|last2=Ahuja|first2=A.|last3=Apsimon|first3=O.|last4=Apsimon|first4=R.|last5=Bachmann|first5=A.-M.|last6=Barrientos|first6=D.|last7=Batsch|first7=F.|last8=Bauche|first8=J.|last9=Berglyd Olsen|first9=V. K.|last10=Bernardini|first10=M.|last11=Bohl|first11=T.|year=2018|title=Acceleration of electrons in the plasma wakefield of a proton bunch|url= |journal=Nature|language=en|volume=561|issue=7723|pages=363–367|doi=10.1038/s41586-018-0485-4|issn=0028-0836|pmc=6786972|pmid=30188496|bibcode=2018Natur.561..363A}}</ref><ref>{{Cite journal|last1=Gschwendtner|first1=E.|last2=Adli|first2=E.|last3=Amorim|first3=L.|last4=Apsimon|first4=R.|last5=Assmann|first5=R.|last6=Bachmann|first6=A.-M.|last7=Batsch|first7=F.|last8=Bauche|first8=J.|last9=Berglyd Olsen|first9=V.K.|last10=Bernardini|first10=M.|last11=Bingham|first11=R.|year=2016|title=AWAKE, The Advanced Proton Driven Plasma Wakefield Acceleration Experiment at CERN|url=https://linkinghub.elsevier.com/retrieve/pii/S0168900216001881|journal=Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|language=en|volume=829|pages=76–82|doi=10.1016/j.nima.2016.02.026|arxiv=1512.05498|bibcode=2016NIMPA.829...76G|s2cid=53605890}}</ref>
* The [[AWAKE]] experiment, which is a proof-of-principle [[plasma acceleration|plasma wakefield accelerator]].<ref>{{Cite journal|last1=Adli|first1=E.|last2=Ahuja|first2=A.|last3=Apsimon|first3=O.|last4=Apsimon|first4=R.|last5=Bachmann|first5=A.-M.|last6=Barrientos|first6=D.|last7=Batsch|first7=F.|last8=Bauche|first8=J.|last9=Berglyd Olsen|first9=V. K.|last10=Bernardini|first10=M.|last11=Bohl|first11=T.|year=2018|title=Acceleration of electrons in the plasma wakefield of a proton bunch|url= |journal=Nature|language=en|volume=561|issue=7723|pages=363–367|doi=10.1038/s41586-018-0485-4|issn=0028-0836|pmc=6786972|pmid=30188496|bibcode=2018Natur.561..363A}}</ref><ref>{{Cite journal|last1=Gschwendtner|first1=E.|last2=Adli|first2=E.|last3=Amorim|first3=L.|last4=Apsimon|first4=R.|last5=Assmann|first5=R.|last6=Bachmann|first6=A.-M.|last7=Batsch|first7=F.|last8=Bauche|first8=J.|last9=Berglyd Olsen|first9=V.K.|last10=Bernardini|first10=M.|last11=Bingham|first11=R.|year=2016|title=AWAKE, The Advanced Proton Driven Plasma Wakefield Acceleration Experiment at CERN|url=https://linkinghub.elsevier.com/retrieve/pii/S0168900216001881|journal=Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|language=en|volume=829|pages=76–82|doi=10.1016/j.nima.2016.02.026|arxiv=1512.05498|bibcode=2016NIMPA.829...76G|s2cid=53605890}}</ref>
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The LHC tunnel is located 100 metres underground, in the region between [[Geneva International Airport]] and the nearby [[Jura mountains]]. The majority of its length is on the French side of the border. It uses the 27&nbsp;km circumference circular tunnel previously occupied by the [[Large Electron–Positron Collider]] (LEP), which was shut down in November 2000. CERN's existing PS/SPS accelerator complexes are used to pre-accelerate protons and lead ions which are then injected into the LHC.
The LHC tunnel is located 100 metres underground, in the region between [[Geneva International Airport]] and the nearby [[Jura mountains]]. The majority of its length is on the French side of the border. It uses the 27&nbsp;km circumference circular tunnel previously occupied by the [[Large Electron–Positron Collider]] (LEP), which was shut down in November 2000. CERN's existing PS/SPS accelerator complexes are used to pre-accelerate protons and lead ions which are then injected into the LHC.


Eight experiments ([[Compact Muon Solenoid|CMS]],<ref>{{Cite journal |last1=The CMS Collaboration |last2=Chatrchyan |first2=S. |last3=Hmayakyan |first3=G. |last4=Khachatryan |first4=V. |last5=Sirunyan |first5=A. M. |last6=Adam |first6=W. |last7=Bauer |first7=T. |last8=Bergauer |first8=T. |last9=Bergauer |first9=H. |last10=Dragicevic |first10=M. |last11=Erö |first11=J. |year=2008 |title=The CMS experiment at the CERN LHC |journal=Journal of Instrumentation |volume=3 |issue=8 |pages=S08004 |bibcode=2008JInst...3S8004C |doi=10.1088/1748-0221/3/08/S08004 |issn=1748-0221 |s2cid=250668481|doi-access=free |hdl=10067/730480151162165141 |hdl-access=free }}</ref> [[ATLAS experiment|ATLAS]],<ref>{{Cite book|last=The ATLAS Collaboration|url=https://www.worldscientific.com/worldscibooks/10.1142/11030|title=ATLAS: A 25-Year Insider Story of the LHC Experiment|publisher=World Scientific|year=2019|isbn=978-981-327-179-1|series=Advanced Series on Directions in High Energy Physics|volume=30|language=en|doi=10.1142/11030}}</ref> [[LHCb]],<ref>{{cite journal|last1=Belyaev|first1=I.|last2=Carboni|first2=G.|last3=Harnew|first3=N.|last4=Teubert|first4=C. Matteuzzi F.|year=2021|title=The history of LHCb|journal=European Physical Journal H|volume=46|issue=1|page=3|doi=10.1140/epjh/s13129-021-00002-z|arxiv=2101.05331|bibcode=2021EPJH...46....3B|s2cid=231603240}}</ref> [[MoEDAL experiment|MoEDAL]],<ref>{{Cite web |date=2010-05-05 |title=MoEDAL becomes the LHC's magnificent seventh |url=https://cerncourier.com/a/moedal-becomes-the-lhcs-magnificent-seventh/ |access-date=2023-09-27 |website=CERN Courier |language=en-GB}}</ref> [[TOTEM]],<ref>{{Cite journal |last1=The TOTEM Collaboration |last2=Anelli |first2=G. |last3=Antchev |first3=G. |last4=Aspell |first4=P. |last5=Avati |first5=V. |last6=Bagliesi |first6=M. G. |last7=Berardi |first7=V. |last8=Berretti |first8=M. |last9=Boccone |first9=V. |last10=Bottigli |first10=U |last11=Bozzo |first11=M. |year=2008 |title=The TOTEM Experiment at the CERN Large Hadron Collider |journal=Journal of Instrumentation |volume=3 |issue=8 |pages=S08007 |bibcode=2008JInst...3S8007T |doi=10.1088/1748-0221/3/08/S08007 |issn=1748-0221 |s2cid=250680293|doi-access=free }}</ref> [[LHCf]],<ref>{{Cite journal |last1=The LHCf Collaboration |last2=Adriani |first2=O. |last3=Bonechi |first3=L. |last4=Bongi |first4=M. |last5=Castellini |first5=G. |last6=D'Alessandro |first6=R. |last7=Faus |first7=D. A. |last8=Fukui |first8=K. |last9=Grandi |first9=M. |last10=Haguenauer |first10=M. |last11=Itow |first11=Y. |year=2008 |title=The LHCf detector at the CERN Large Hadron Collider |journal=Journal of Instrumentation |volume=3 |issue=8 |pages=S08006 |bibcode=2008JInst...3S8006L |doi=10.1088/1748-0221/3/08/S08006 |issn=1748-0221 |s2cid=250679205|doi-access=free |hdl=10550/42770 |hdl-access=free }}</ref> [[FASER experiment|FASER]]<ref>{{Cite journal|last1=Feng|first1=Jonathan L.|last2=Galon|first2=Iftah|last3=Kling|first3=Felix|last4=Trojanowski|first4=Sebastian|year=2018|title=ForwArd Search ExpeRiment at the LHC|url=https://link.aps.org/doi/10.1103/PhysRevD.97.035001|journal=Physical Review D|language=en|volume=97|issue=3|pages=035001|doi=10.1103/PhysRevD.97.035001|arxiv=1708.09389|bibcode=2018PhRvD..97c5001F|s2cid=119101090|issn=2470-0010}}</ref> and [[A Large Ion Collider Experiment|ALICE]]<ref>{{cite arXiv|last1=Fabjan|first1=C.|last2=Schukraft|first2=J.|year=2011|title=The story of ALICE: Building the dedicated heavy ion detector at LHC|class=physics.ins-det|eprint=1101.1257}}</ref>) are located along the collider; each of them studies particle collisions from a different aspect, and with different technologies. Construction for these experiments required an extraordinary engineering effort. For example, a special [[Crane (machine)|crane]] was rented from Belgium to lower pieces of the CMS detector into its cavern, since each piece weighed nearly {{val|2,000}} tons. The first of the approximately {{val|5,000}} magnets necessary for construction was lowered down a special shaft at in March 2005.
Eight experiments ([[Compact Muon Solenoid|CMS]],<ref>{{Cite journal |last1=The CMS Collaboration |last2=Chatrchyan |first2=S. |last3=Hmayakyan |first3=G. |last4=Khachatryan |first4=V. |last5=Sirunyan |first5=A. M. |last6=Adam |first6=W. |last7=Bauer |first7=T. |last8=Bergauer |first8=T. |last9=Bergauer |first9=H. |last10=Dragicevic |first10=M. |last11=Erö |first11=J. |year=2008 |title=The CMS experiment at the CERN LHC |journal=Journal of Instrumentation |volume=3 |issue=8 |article-number=S08004 |bibcode=2008JInst...3S8004C |doi=10.1088/1748-0221/3/08/S08004 |issn=1748-0221 |s2cid=250668481|doi-access=free |hdl=10067/730480151162165141 |hdl-access=free }}</ref> [[ATLAS experiment|ATLAS]],<ref>{{Cite book|last=The ATLAS Collaboration|url=https://www.worldscientific.com/worldscibooks/10.1142/11030|title=ATLAS: A 25-Year Insider Story of the LHC Experiment|publisher=World Scientific|year=2019|isbn=978-981-327-179-1|series=Advanced Series on Directions in High Energy Physics|volume=30|language=en|doi=10.1142/11030}}</ref> [[LHCb]],<ref>{{cite journal|last1=Belyaev|first1=I.|last2=Carboni|first2=G.|last3=Harnew|first3=N.|last4=Teubert|first4=C. Matteuzzi F.|year=2021|title=The history of LHCb|journal=European Physical Journal H|volume=46|issue=1|page=3|doi=10.1140/epjh/s13129-021-00002-z|arxiv=2101.05331|bibcode=2021EPJH...46....3B|s2cid=231603240}}</ref> [[MoEDAL experiment|MoEDAL]],<ref>{{Cite web |date=2010-05-05 |title=MoEDAL becomes the LHC's magnificent seventh |url=https://cerncourier.com/a/moedal-becomes-the-lhcs-magnificent-seventh/ |access-date=2023-09-27 |website=CERN Courier |language=en-GB}}</ref> [[TOTEM]],<ref>{{Cite journal |last1=The TOTEM Collaboration |last2=Anelli |first2=G. |last3=Antchev |first3=G. |last4=Aspell |first4=P. |last5=Avati |first5=V. |last6=Bagliesi |first6=M. G. |last7=Berardi |first7=V. |last8=Berretti |first8=M. |last9=Boccone |first9=V. |last10=Bottigli |first10=U |last11=Bozzo |first11=M. |year=2008 |title=The TOTEM Experiment at the CERN Large Hadron Collider |journal=Journal of Instrumentation |volume=3 |issue=8 |article-number=S08007 |bibcode=2008JInst...3S8007T |doi=10.1088/1748-0221/3/08/S08007 |issn=1748-0221 |s2cid=250680293|doi-access=free }}</ref> [[LHCf]],<ref>{{Cite journal |last1=The LHCf Collaboration |last2=Adriani |first2=O. |last3=Bonechi |first3=L. |last4=Bongi |first4=M. |last5=Castellini |first5=G. |last6=D'Alessandro |first6=R. |last7=Faus |first7=D. A. |last8=Fukui |first8=K. |last9=Grandi |first9=M. |last10=Haguenauer |first10=M. |last11=Itow |first11=Y. |year=2008 |title=The LHCf detector at the CERN Large Hadron Collider |journal=Journal of Instrumentation |volume=3 |issue=8 |article-number=S08006 |bibcode=2008JInst...3S8006L |doi=10.1088/1748-0221/3/08/S08006 |issn=1748-0221 |s2cid=250679205|doi-access=free |hdl=10550/42770 |hdl-access=free }}</ref> [[FASER experiment|FASER]]<ref>{{Cite journal|last1=Feng|first1=Jonathan L.|last2=Galon|first2=Iftah|last3=Kling|first3=Felix|last4=Trojanowski|first4=Sebastian|year=2018|title=ForwArd Search ExpeRiment at the LHC|url=https://link.aps.org/doi/10.1103/PhysRevD.97.035001|journal=Physical Review D|language=en|volume=97|issue=3|article-number=035001|doi=10.1103/PhysRevD.97.035001|arxiv=1708.09389|bibcode=2018PhRvD..97c5001F|s2cid=119101090|issn=2470-0010}}</ref> and [[A Large Ion Collider Experiment|ALICE]]<ref>{{cite arXiv|last1=Fabjan|first1=C.|last2=Schukraft|first2=J.|year=2011|title=The story of ALICE: Building the dedicated heavy ion detector at LHC|class=physics.ins-det|eprint=1101.1257}}</ref>) are located along the collider; each of them studies particle collisions from a different aspect, and with different technologies. Construction for these experiments required an extraordinary engineering effort. For example, a special [[Crane (machine)|crane]] was rented from Belgium to lower pieces of the CMS detector into its cavern, since each piece weighed nearly {{val|2,000}} tons. The first of the approximately {{val|5,000}} magnets necessary for construction was lowered down a special shaft at in March 2005.


The LHC has begun to generate vast quantities of data, which CERN streams to laboratories around the world for distributed processing, making use of a specialized [[grid computing|grid]] infrastructure, the [[LHC Computing Grid]]. In April 2005, a trial successfully streamed 600&nbsp;MB/s to seven different sites across the world.
The LHC has begun to generate vast quantities of data, which CERN streams to laboratories around the world for distributed processing, making use of a specialized [[grid computing|grid]] infrastructure, the [[LHC Computing Grid]]. In April 2005, a trial successfully streamed 600&nbsp;MB/s to seven different sites across the world.


In August 2008, the initial particle beams were injected into the LHC.<ref name="NYT2008/07/29">{{Cite news |last=Overbye |first=Dennis |date=2008-07-29 |title=Let the Proton Smashing Begin. (The Rap Is Already Written.) |language=en-US |work=The New York Times |url=https://www.nytimes.com/2008/07/29/science/29cernrap.html |access-date=2023-09-27 |issn=0362-4331}}</ref> The first beam was circulated through the entire LHC on 10 September 2008,<ref name="CERNPR06.08">{{cite web |url=https://press.cern/past-events/lhc-first-beam |title=LHC First Beam |publisher=CERN |access-date=12 November 2016 |archive-url=https://web.archive.org/web/20161113035627/https://press.cern/past-events/lhc-first-beam |archive-date=13 November 2016 |url-status=dead }}</ref> but the system failed 10 days later because of a faulty magnet connection, and it was stopped for repairs on 19 September 2008.
In August 2008, the initial particle beams were injected into the LHC.<ref name="NYT2008/07/29">{{Cite news |last=Overbye |first=Dennis |date=2008-07-29 |title=Let the Proton Smashing Begin. (The Rap Is Already Written.) |language=en-US |work=The New York Times |url=https://www.nytimes.com/2008/07/29/science/29cernrap.html |access-date=2023-09-27 |issn=0362-4331}}</ref> The first beam was circulated through the entire LHC on 10 September 2008,<ref name="CERNPR06.08">{{cite web |url=https://press.cern/past-events/lhc-first-beam |title=LHC First Beam |publisher=CERN |access-date=12 November 2016 |archive-url=https://web.archive.org/web/20161113035627/https://press.cern/past-events/lhc-first-beam |archive-date=13 November 2016 }}</ref> but the system failed 10 days later because of a faulty magnet connection, and it was stopped for repairs on 19 September 2008.


The LHC resumed operation on 20 November 2009 by successfully circulating two beams, each with an energy of 3.5&nbsp;[[electronvolts|teraelectronvolts]] (TeV). The challenge for the engineers was then to line up the two beams so that they smashed into each other. This is like "firing two needles across the Atlantic and getting them to hit each other" according to Steve Myers, director for accelerators and technology.
The LHC resumed operation on 20 November 2009 by successfully circulating two beams, each with an energy of 3.5&nbsp;[[electronvolts|teraelectronvolts]] (TeV). The challenge for the engineers was then to line up the two beams so that they smashed into each other. This is like "firing two needles across the Atlantic and getting them to hit each other" according to [[Stephen Myers (engineer)|Stephen Myers]], director for accelerators and technology.


On 30 March 2010, the LHC successfully collided two proton beams with 3.5&nbsp;TeV of energy per proton, resulting in a 7&nbsp;TeV collision energy. This was enough to start the main research program, including the search for the [[Higgs boson]]. When the 7&nbsp;TeV experimental period ended, the LHC increased to 8&nbsp;TeV (4&nbsp;TeV per proton) starting March 2012, and soon began particle collisions at that energy. In July 2012, CERN scientists announced the discovery of a new sub-atomic particle that was later confirmed to be the [[Higgs boson]].<ref>{{cite journal |author=Cho |first=Adrian |date=13 July 2012 |title=Higgs Boson Makes Its Debut After Decades-Long Search |journal=Science |volume=337 |issue=6091 |pages=141–143 |bibcode=2012Sci...337..141C |doi=10.1126/science.337.6091.141 |pmid=22798574}}</ref>
On 30 March 2010, the LHC successfully collided two proton beams with 3.5&nbsp;TeV of energy per proton, resulting in a 7&nbsp;TeV collision energy. This was enough to start the main research program, including the search for the [[Higgs boson]]. When the 7&nbsp;TeV experimental period ended, the LHC increased to 8&nbsp;TeV (4&nbsp;TeV per proton) starting March 2012, and soon began particle collisions at that energy. In July 2012, CERN scientists announced the discovery of a new sub-atomic particle that was later confirmed to be the [[Higgs boson]].<ref>{{cite journal |author=Cho |first=Adrian |date=13 July 2012 |title=Higgs Boson Makes Its Debut After Decades-Long Search |journal=Science |volume=337 |issue=6091 |pages=141–143 |bibcode=2012Sci...337..141C |doi=10.1126/science.337.6091.141 |pmid=22798574}}</ref>
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* The [[Super Proton–Antiproton Synchrotron]] (Sp{{overline|p}}S), operated 1981–1991.<ref>{{Citation|last=Schmidt|first=Rudiger|title=The CERN SPS proton–antiproton collider|url=https://www.worldscientific.com/doi/abs/10.1142/9789814436403_0010|work=Challenges and Goals for Accelerators in the XXI Century|pages=153–167|year=2016|publisher=World Scientific|language=en|doi=10.1142/9789814436403_0010|bibcode=2016cgat.book..153S|isbn=978-981-4436-39-7|access-date=2021-03-02|url-access=subscription}}</ref> A modification of Super Proton Synchrotron (SPS) to operate as a proton-antiproton collider.
* The [[Super Proton–Antiproton Synchrotron]] (Sp{{overline|p}}S), operated 1981–1991.<ref>{{Citation|last=Schmidt|first=Rudiger|title=The CERN SPS proton–antiproton collider|url=https://www.worldscientific.com/doi/abs/10.1142/9789814436403_0010|work=Challenges and Goals for Accelerators in the XXI Century|pages=153–167|year=2016|publisher=World Scientific|language=en|doi=10.1142/9789814436403_0010|bibcode=2016cgat.book..153S|isbn=978-981-4436-39-7|access-date=2021-03-02|url-access=subscription}}</ref> A modification of Super Proton Synchrotron (SPS) to operate as a proton-antiproton collider.
* The [[Large Electron–Positron Collider]] (LEP), which operated 1989–2000 and was the largest machine of its kind, housed in a 27&nbsp;km-long circular tunnel which now houses the [[Large Hadron Collider]].<ref>{{Cite book |last=Schopper |first=Herwig |url=https://link.springer.com/book/10.1007%2F978-3-540-89301-1 |title=LEP – The Lord of the Collider Rings at CERN 1980-2000 |year=2009 |isbn=978-3-540-89300-4 |language=en-gb |bibcode=2009llcr.book.....S |doi=10.1007/978-3-540-89301-1}}</ref><ref>{{Cite journal|last=Picasso|first=Emilio|year=2012|title=A few memories from the days at LEP|url=https://link.springer.com/10.1140/epjh/e2011-20050-0|journal=The European Physical Journal H|language=en|volume=36|issue=4|pages=551–562|doi=10.1140/epjh/e2011-20050-0|bibcode=2012EPJH...36..551P|s2cid=119553748|issn=2102-6459|url-access=subscription}}</ref>
* The [[Large Electron–Positron Collider]] (LEP), which operated 1989–2000 and was the largest machine of its kind, housed in a 27&nbsp;km-long circular tunnel which now houses the [[Large Hadron Collider]].<ref>{{Cite book |last=Schopper |first=Herwig |url=https://link.springer.com/book/10.1007%2F978-3-540-89301-1 |title=LEP – The Lord of the Collider Rings at CERN 1980-2000 |year=2009 |isbn=978-3-540-89300-4 |language=en-gb |bibcode=2009llcr.book.....S |doi=10.1007/978-3-540-89301-1}}</ref><ref>{{Cite journal|last=Picasso|first=Emilio|year=2012|title=A few memories from the days at LEP|url=https://link.springer.com/10.1140/epjh/e2011-20050-0|journal=The European Physical Journal H|language=en|volume=36|issue=4|pages=551–562|doi=10.1140/epjh/e2011-20050-0|bibcode=2012EPJH...36..551P|s2cid=119553748|issn=2102-6459|url-access=subscription}}</ref>
* The [[LEP Pre-Injector]] (LPI) accelerator complex,<ref>{{Cite conference |last1=Battisti |first1=S. |last2=Bossart |first2=R. |last3=Delahaye |first3=J. P. |last4=Hubner |first4=K. |last5=Garoby |first5=R. |last6=Kugler |first6=H. |last7=Krusche |first7=A. |last8=Madsen |first8=J. H. B. |last9=Potier |first9=J. P. |publisher=IEEE |year=1989 |location=Chicago |pages=1815–1817 |chapter=Progress report on the LEP Pre-injector |bibcode=1989pac..conf.1815B |doi=10.1109/PAC.1989.72934 |chapter-url=https://ieeexplore.ieee.org/document/72934 |last10=Riche |first10=A. |last11=Rinolfi |first11=L. |title=Accelerator Science and Technology |conference=1989 IEEE Particle Accelerator Conference |s2cid=122800040|url=http://cds.cern.ch/record/2844301 }}</ref> consisting of two accelerators, a linear accelerator called [[LEP Injector Linac]] (LIL; itself consisting of two back-to-back linear accelerators called LIL V and LIL W) and a circular accelerator called [[Electron Positron Accumulator]] (EPA).<ref>{{Cite book|last1=Battisti|first1=S.|url=https://cds.cern.ch/record/165032/|title=The design of the LEP electron positron accumulator (EPA)|last2=Bell|first2=M.|last3=Delahaye|first3=J. P.|last4=Krusche|first4=A.|last5=Kugler|first5=H.|last6=Madsen|first6=J. H. B.|last7=Poncet|first7=Alain|year=1984}}</ref> The purpose of these accelerators was to inject positron and electron beams into the CERN accelerator complex (more precisely, to the Proton Synchrotron), to be delivered to LEP after many stages of acceleration. Operational 1987–2001; after the shutdown of LEP and the completion of experiments that were directly fed by the LPI, the LPI facility was adapted to be used for the [[CLIC Test Facility 3]] (CTF3).<ref name=":2">{{Cite journal |last=Corsini |first=Roberto |year=2017 |others=Schaa, Volker RW (Ed.), Arduini Gianluigi (Ed.), Pranke Juliana (Ed.), Seidel Mike (Ed.), Lindroos Mats (Ed.) |title=Final Results From the Clic Test Facility (CTF3) |url=https://jacow.org/ipac2017/doi/JACoW-IPAC2017-TUZB1.html |journal=Proceedings of the 8th International Particle Accelerator Conference |language=en |volume=IPAC2017 |pages=6 pages, 0.817 MB |doi=10.18429/JACOW-IPAC2017-TUZB1}}</ref>
* The [[LEP Pre-Injector]] (LPI) accelerator complex,<ref>{{Cite conference |last1=Battisti |first1=S. |last2=Bossart |first2=R. |last3=Delahaye |first3=J. P. |last4=Hubner |first4=K. |last5=Garoby |first5=R. |last6=Kugler |first6=H. |last7=Krusche |first7=A. |last8=Madsen |first8=J. H. B. |last9=Potier |first9=J. P. |publisher=IEEE |year=1989 |location=Chicago |pages=1815–1817 |chapter=Progress report on the LEP Pre-injector |bibcode=1989pac..conf.1815B |doi=10.1109/PAC.1989.72934 |chapter-url=https://ieeexplore.ieee.org/document/72934 |last10=Riche |first10=A. |last11=Rinolfi |first11=L. |title=Accelerator Science and Technology |conference=1989 IEEE Particle Accelerator Conference |s2cid=122800040|url=http://cds.cern.ch/record/2844301 }}</ref> consisting of two accelerators, a linear accelerator called [[LEP Injector Linac]] (LIL; itself consisting of two back-to-back linear accelerators called LIL V and LIL W) and a circular accelerator called [[Electron Positron Accumulator]] (EPA).<ref>{{Cite book|last1=Battisti|first1=S.|url=https://cds.cern.ch/record/165032/|title=The design of the LEP electron positron accumulator (EPA)|last2=Bell|first2=M.|last3=Delahaye|first3=J. P.|last4=Krusche|first4=A.|last5=Kugler|first5=H.|last6=Madsen|first6=J. H. B.|last7=Poncet|first7=Alain|year=1984}}</ref> The purpose of these accelerators was to inject positron and electron beams into the CERN accelerator complex (more precisely, to the Proton Synchrotron), to be delivered to LEP after many stages of acceleration. Operational 1987–2001; after the shutdown of LEP and the completion of experiments that were directly fed by the LPI, the LPI facility was adapted to be used for the [[CLIC Test Facility 3]] (CTF3).<ref name=":2">{{Cite journal |last=Corsini |first=Roberto |year=2017 |others=Schaa, Volker RW (Ed.), Arduini Gianluigi (Ed.), Pranke Juliana (Ed.), Seidel Mike (Ed.), Lindroos Mats (Ed.) |title=Final Results from the Clic Test Facility (CTF3) |url=https://jacow.org/ipac2017/doi/JACoW-IPAC2017-TUZB1.html |journal=Proceedings of the 8th Int. Particle Accelerator Conf |language=en |volume=IPAC2017 |pages=6 pages, 0.817 MB |doi=10.18429/JACOW-IPAC2017-TUZB1}}</ref>
* The [[Low Energy Antiproton Ring]] (LEAR) was commissioned in 1982. LEAR assembled the first pieces of true [[antimatter]], in 1995, consisting of nine atoms of [[antihydrogen]].<ref>{{Cite book|last=Möhl|first=D.|url=https://cds.cern.ch/record/388662|title=LEAR, history and early achievements|year=1999}}</ref> It was closed in 1996, and superseded by the [[Antiproton Decelerator]]. The LEAR apparatus itself was reconfigured into the [[Low Energy Ion Ring]] (LEIR) ion booster.<ref name="Chanel 2004 137–143"/>
* The [[Low Energy Antiproton Ring]] (LEAR) was commissioned in 1982. LEAR assembled the first pieces of true [[antimatter]], in 1995, consisting of nine atoms of [[antihydrogen]].<ref>{{Cite book|last=Möhl|first=D.|url=https://cds.cern.ch/record/388662|title=LEAR, history and early achievements|year=1999}}</ref> It was closed in 1996, and superseded by the [[Antiproton Decelerator]]. The LEAR apparatus itself was reconfigured into the [[Low Energy Ion Ring]] (LEIR) ion booster.<ref name="Chanel 2004 137–143"/>
* The [[Antiproton Accumulator]] (AA), built 1979–1980, operations ended in 1997 and the machine was dismantled. Stored antiprotons produced by the Proton Synchrotron (PS) for use in other experiments and accelerators (for example the ISR, Sp{{overline|p}}S and LEAR). For later half of its working life operated in tandem with [[Antiproton Collector]] (AC), to form the Antiproton Accumulation Complex (AAC).<ref name=":3">{{Cite journal|last1=Koziol|first1=H.|last2=Möhl|first2=D.|year=2004|title=The CERN antiproton collider programme: accelerators and accumulation rings|url=https://linkinghub.elsevier.com/retrieve/pii/S0370157304003503|journal=Physics Reports|language=en|volume=403-404|pages=91–106|doi=10.1016/j.physrep.2004.09.001|bibcode=2004PhR...403...91K}}</ref>
* The [[Antiproton Accumulator]] (AA), built 1979–1980, operations ended in 1997 and the machine was dismantled. Stored antiprotons produced by the Proton Synchrotron (PS) for use in other experiments and accelerators (for example the ISR, Sp{{overline|p}}S and LEAR). For later half of its working life operated in tandem with [[Antiproton Collector]] (AC), to form the Antiproton Accumulation Complex (AAC).<ref name=":3">{{Cite journal|last1=Koziol|first1=H.|last2=Möhl|first2=D.|year=2004|title=The CERN antiproton collider programme: accelerators and accumulation rings|url=https://linkinghub.elsevier.com/retrieve/pii/S0370157304003503|journal=Physics Reports|language=en|volume=403-404|pages=91–106|doi=10.1016/j.physrep.2004.09.001|bibcode=2004PhR...403...91K}}</ref>
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=== Member states and budget ===
=== Member states and budget ===


Since its foundation by 12 members in 1954, CERN regularly accepted new members. All new members have remained in the organization continuously since their accession, except Spain and Yugoslavia. Spain first joined CERN in 1961, withdrew in 1969, and rejoined in 1983. Yugoslavia was a founding member of CERN but quit in 1961. Of the 24 members, Israel joined CERN as a full member in January 2014,<ref name=ISR /> becoming the first, and currently only, non-Geographically European full member.<ref>Rahman, Fazlur. (11 November 2013) [https://www.haaretz.com/news/diplomacy-defense/1.557492 Israel may become first non-European member of nuclear research group CERN – Diplomacy and Defense Israel News]. Haaretz. Retrieved 28 April 2014.</ref>
Since its foundation by 12 members in 1954, CERN regularly accepted new members. All new members have remained in the organization continuously since their accession, except Spain and Yugoslavia. Spain first joined CERN in 1961, withdrew in 1969, and rejoined in 1983. Yugoslavia was a founding member of CERN but quit in 1961. Of the 24 members, Israel joined CERN as a full member in January 2014,<ref name=ISR /> becoming the first, and currently only, non-geographically European full member.<ref>Rahman, Fazlur. (11 November 2013) [https://www.haaretz.com/news/diplomacy-defense/1.557492 Israel may become first non-European member of nuclear research group CERN – Diplomacy and Defense Israel News]. Haaretz. Retrieved 28 April 2014.</ref>


The budget contributions of member states are computed based on their GDP.<ref name="autogenerated1">{{cite web|url=https://fap-dep.web.cern.ch/rpc/member-states-contributions|title=Member States' Contributions – 2019|website=CERN website|publisher=CERN|access-date=4 May 2019|archive-date=20 November 2017|archive-url=https://web.archive.org/web/20171120142735/https://fap-dep.web.cern.ch/rpc/member-states-contributions|url-status=dead}}</ref>
The budget contributions of member states are computed based on their GDP.<ref name="autogenerated1">{{cite web|url=https://fap-dep.web.cern.ch/rpc/member-states-contributions|title=Member States' Contributions – 2019|website=CERN website|publisher=CERN|access-date=4 May 2019|archive-date=20 November 2017|archive-url=https://web.archive.org/web/20171120142735/https://fap-dep.web.cern.ch/rpc/member-states-contributions}}</ref>
{| class="wikitable sortable"
{| class="wikitable sortable"
|-
|-
!Member state
!Member state
!Status since
!Status since
!Contribution<br />(million [[Swiss franc|CHF]] for 2019)
!Contribution<br />(million [[Swiss franc|CHF]] for 2025)
!Contribution<br />(fraction of total for 2019)
!Contribution<br />(fraction of total for 2025)
!Contribution per capita{{refn|Based on the [[List of countries by population|population]] in 2017. |name=population |group=note}}<br />([[Swiss franc|CHF]]/person for 2017)
!Contribution per capita{{refn|Based on the [[List of countries by population|population]] in 2017. |name=population |group=note}}<br />([[Swiss franc|CHF]]/person for 2017)
|- class="sortbottom" style="background:#e9e9e9;"
|- class="sortbottom" style="background:#e9e9e9;"
| colspan=5 | '''Founding Members'''{{refn|12 founding members drafted the ''Convention for the Establishment of a European Organization for Nuclear Research'' which entered into force on 29 September 1954.<ref>{{cite book |url=https://www.esa.int/esapub/sp/sp1300/sp1300EN1.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://www.esa.int/esapub/sp/sp1300/sp1300EN1.pdf |archive-date=2022-10-09 |url-status=live |title=ESA Convention |date=September 2005 |edition=6th |publisher=European Space Agency |isbn=978-92-9092-397-8}}</ref><ref>{{cite web |title=Convention for the Establishment of a European Organization for Nuclear Research |url=https://council.web.cern.ch/council/en/governance/Convention.html |website=CERN Council website |publisher=CERN |access-date=16 July 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120701224642/https://council.web.cern.ch/council/en/Governance/Convention.html |archive-date=1 July 2012}}</ref> |name=founding |group=note}}
| colspan=5 | '''Founding Members'''{{refn|12 founding members drafted the ''Convention for the Establishment of a European Organization for Nuclear Research'' which entered into force on 29 September 1954.<ref>{{cite book |url=https://www.esa.int/esapub/sp/sp1300/sp1300EN1.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://www.esa.int/esapub/sp/sp1300/sp1300EN1.pdf |archive-date=2022-10-09 |url-status=live |title=ESA Convention |date=September 2005 |edition=6th |publisher=European Space Agency |isbn=978-92-9092-397-8}}</ref><ref>{{cite web |title=Convention for the Establishment of a European Organization for Nuclear Research |url=https://council.web.cern.ch/council/en/governance/Convention.html |website=CERN Council website |publisher=CERN |access-date=16 July 2012 |archive-url=https://web.archive.org/web/20120701224642/https://council.web.cern.ch/council/en/Governance/Convention.html |archive-date=1 July 2012}}</ref> |name=founding |group=note}}
|-
|-
| {{BEL}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|30.7}}|| style="text-align:right;" |{{nts|2.68}}% || style="text-align:right;" |{{nts|2.7}}
| {{BEL}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|34.36}}|| style="text-align:right;" |{{nts|2.80}}% || style="text-align:right;" |{{nts|2.7}}
|-
|-
| {{DNK}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|20.5}}|| style="text-align:right;" |{{nts|1.79}}% || style="text-align:right;" |{{nts|3.4}}
| {{DNK}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|23.65}}|| style="text-align:right;" |{{nts|1.93}}% || style="text-align:right;" |{{nts|3.4}}
|-
|-
| {{FRA}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|160.3}} || style="text-align:right;"| {{nts|14.0}}% || style="text-align:right;" |{{nts|2.4}}
| {{FRA}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|156.88}} || style="text-align:right;"| {{nts|12.78}}% || style="text-align:right;" |{{nts|2.4}}
|-
|-
| {{DEU}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|236.0}}|| style="text-align:right;" |{{nts|20.6}}% || style="text-align:right;" |{{nts|2.8}}
| {{DEU}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|254.71}}|| style="text-align:right;" |{{nts|20.76}}% || style="text-align:right;" |{{nts|2.8}}
|-
|-
| {{GRC}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|12.5}} || style="text-align:right;"| {{nts|1.09}}% || style="text-align:right;" |{{nts|1.6}}
| {{GRC}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|12.23}} || style="text-align:right;"| {{nts|1.00}}% || style="text-align:right;" |{{nts|1.6}}
|-
|-
| {{ITA}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|118.4}} || style="text-align:right;"| {{nts|10.4}}% || style="text-align:right;"| {{nts|2.1}}
| {{ITA}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|119.49}} || style="text-align:right;"| {{nts|9.74}}% || style="text-align:right;"| {{nts|2.1}}
|-
|-
| {{NLD}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|51.8}} || style="text-align:right;"| {{nts|4.53}}% || style="text-align:right;"| {{nts|3.0}}
| {{NLD}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|59.77}} || style="text-align:right;"| {{nts|4.87}}% || style="text-align:right;"| {{nts|3.0}}
|-
|-
| {{NOR}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|28.3}} || style="text-align:right;"| {{nts|2.48}}% || style="text-align:right;"| {{nts|5.4}}
| {{NOR}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|30.75}} || style="text-align:right;"| {{nts|2.51}}% || style="text-align:right;"| {{nts|5.4}}
|-
|-
| {{SWE}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|30.5}} || style="text-align:right;"| {{nts|2.66}}% || style="text-align:right;"| {{nts|3.0}}
| {{SWE}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|33.07}} || style="text-align:right;"| {{nts|2.69}}% || style="text-align:right;"| {{nts|3.0}}
|-
|-
| {{CHE}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|47.1}} || style="text-align:right;"| {{nts|4.12}}% || style="text-align:right;"| {{nts|4.9}}
| {{CHE}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|47.11}} || style="text-align:right;"| {{nts|3.84}}% || style="text-align:right;"| {{nts|4.9}}
|-
|-
| {{GBR}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|184.0}} || style="text-align:right;"| {{nts|16.1}}% || style="text-align:right;"| {{nts|2.8}}
| {{GBR}} || {{dts|29 September 1954}} || style="text-align:right;"| {{nts|185.44}} || style="text-align:right;"| {{nts|15.11}}% || style="text-align:right;"| {{nts|2.8}}
|-
|-
| ''{{YUG}}''{{refn|Yugoslavia left the organization in 1961.|group=note}} || ''{{dts|29 September 1954}}''<ref>{{cite web |url=https://international-relations.web.cern.ch/international-relations/ms/ |title=Member States |website=International relations |publisher=CERN |access-date=25 November 2015}}</ref><ref name="timeline.web.cern.ch">{{cite web|title=Member States|url=https://timeline.web.cern.ch/timelines/Member-states|website=CERN timelines|publisher=CERN|access-date=25 November 2015|archive-url=https://web.archive.org/web/20180704175432/https://timeline.web.cern.ch/timelines/Member-states|archive-date=4 July 2018|url-status=dead}}</ref> || style="text-align:right;"| {{nts|0}} || style="text-align:right;"| {{nts|0}}% || style="text-align:right;"| {{nts|0.0}}
| ''{{YUG}}''{{refn|Yugoslavia left the organization in 1961.|group=note}} || ''{{dts|29 September 1954}}''<ref>{{cite web |url=https://international-relations.web.cern.ch/international-relations/ms/ |title=Member States |website=International relations |publisher=CERN |access-date=25 November 2015}}</ref><ref name="timeline.web.cern.ch">{{cite web|title=Member States|url=https://timeline.web.cern.ch/timelines/Member-states|website=CERN timelines|publisher=CERN|access-date=25 November 2015|archive-url=https://web.archive.org/web/20180704175432/https://timeline.web.cern.ch/timelines/Member-states|archive-date=4 July 2018}}</ref> || style="text-align:right;"| {{nts|0}} || style="text-align:right;"| {{nts|0}}% || style="text-align:right;"| {{nts|0.0}}
|- class="sortbottom" style="background:#e9e9e9;"
|- class="sortbottom" style="background:#e9e9e9;"
| colspan=5 | '''Acceded Members'''{{refn|Acceded members become CERN member states by ratifying the CERN convention.<ref name="Member States">{{cite web |title=CERN Member States |url=https://council.web.cern.ch/council/en/MemberStates.html |website=CERN Council website |publisher=CERN |access-date=16 July 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120701224138/https://council.web.cern.ch/council/en/MemberStates.html |archive-date=1 July 2012}}</ref> |name=acceded |group=note}}
| colspan=5 | '''Acceded Members'''{{refn|Acceded members become CERN member states by ratifying the CERN convention.<ref name="Member States">{{cite web |title=CERN Member States |url=https://council.web.cern.ch/council/en/MemberStates.html |website=CERN Council website |publisher=CERN |access-date=16 July 2012 |archive-url=https://web.archive.org/web/20120701224138/https://council.web.cern.ch/council/en/MemberStates.html |archive-date=1 July 2012}}</ref> |name=acceded |group=note}}
|-
|-
| {{AUT}} || {{dts|1 June 1959}} || style="text-align:right;"| {{nts|24.7}} || style="text-align:right;"| {{nts|2.16}}% || style="text-align:right;"| {{nts|2.9}}
| {{AUT}} || {{dts|1 June 1959}} || style="text-align:right;"| {{nts|27.22}} || style="text-align:right;"| {{nts|2.22}}% || style="text-align:right;"| {{nts|2.9}}
|-
|-
| {{ESP}}{{refn|Spain was previously a member state from 1961 to 1969|group=note}} || {{dts|1 January 1983}}<ref name="timeline.web.cern.ch"/><ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/ms/es.html |title=Spain |website=International Relations |publisher=CERN |access-date=25 November 2015}}</ref> || style="text-align:right;"| {{nts|80.7}} || style="text-align:right;"| {{nts|7.06}}% || style="text-align:right;"| {{nts|2.0}}
| {{ESP}}{{refn|Spain was previously a member state from 1961 to 1969|group=note}} || {{dts|1 January 1983}}<ref name="timeline.web.cern.ch"/><ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/ms/es.html |title=Spain |website=International Relations |publisher=CERN |access-date=25 November 2015}}</ref> || style="text-align:right;"| {{nts|83.86}} || style="text-align:right;"| {{nts|6.83}}% || style="text-align:right;"| {{nts|2.0}}
|-
|-
| {{PRT}} || {{dts|1 January 1986}} || style="text-align:right;"| {{nts|12.5}} || style="text-align:right;"| {{nts|1.09}}% || style="text-align:right;"| {{nts|1.3}}
| {{PRT}} || {{dts|1 January 1986}} || style="text-align:right;"| {{nts|13.42}} || style="text-align:right;"| {{nts|1.09}}% || style="text-align:right;"| {{nts|1.3}}
|-
|-
| {{FIN}} || {{dts|1 January 1991}} || style="text-align:right;"| {{nts|15.1}} || style="text-align:right;"| {{nts|1.32}}% || style="text-align:right;"| {{nts|2.8}}
| {{FIN}} || {{dts|1 January 1991}} || style="text-align:right;"| {{nts|16.35}} || style="text-align:right;"| {{nts|1.33}}% || style="text-align:right;"| {{nts|2.8}}
|-
|-
| {{POL}} || {{dts|1 July 1991}} || style="text-align:right;"| {{nts|31.9}} || style="text-align:right;"| {{nts|2.79}}% || style="text-align:right;"| {{nts|0.8}}
| {{POL}} || {{dts|1 July 1991}} || style="text-align:right;"| {{nts|39.20}} || style="text-align:right;"| {{nts|3.19}}% || style="text-align:right;"| {{nts|0.8}}
|-
|-
| {{HUN}} || {{dts|1 July 1992}} || style="text-align:right;"| {{nts|7.0}} || style="text-align:right;"| {{nts|0.609}}% || style="text-align:right;"| {{nts|0.7}}
| {{HUN}} || {{dts|1 July 1992}} || style="text-align:right;"| {{nts|8.98}} || style="text-align:right;"| {{nts|0.732}}% || style="text-align:right;"| {{nts|0.7}}
|-
|-
| {{CZE}} || {{dts|1 July 1993}} || style="text-align:right;"| {{nts|10.9}} || style="text-align:right;"| {{nts|0.950}}% || style="text-align:right;"| {{nts|1.1}}
| {{CZE}} || {{dts|1 July 1993}} || style="text-align:right;"| {{nts|14.81}} || style="text-align:right;"| {{nts|1.21}}% || style="text-align:right;"| {{nts|1.1}}
|-
|-
| {{SVK}} || {{dts|1 July 1993}} || style="text-align:right;"| {{nts|5.6}} || style="text-align:right;"| {{nts|0.490}}% || style="text-align:right;"| {{nts|1.0}}
| {{SVK}} || {{dts|1 July 1993}} || style="text-align:right;"| {{nts|6.55}} || style="text-align:right;"| {{nts|0.534}}% || style="text-align:right;"| {{nts|1.0}}
|-
|-
| {{BGR}} || {{dts|11 June 1999}} || style="text-align:right;"| {{nts|3.4}} || style="text-align:right;"| {{nts|0.297}}% || style="text-align:right;"| {{nts|0.4}}
| {{BGR}} || {{dts|11 June 1999}} || style="text-align:right;"| {{nts|4.89}} || style="text-align:right;"| {{nts|0.398}}% || style="text-align:right;"| {{nts|0.4}}
|-
|-
| {{ISR}} || {{dts|6 January 2014}}<ref name=ISR>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/ms/il.html |title=Israel |website=International Relations |publisher=CERN |access-date=5 July 2014}}</ref> || style="text-align:right;"| {{nts|19.7}} || style="text-align:right;"| {{nts|1.73}}% || style="text-align:right;"| {{nts|2.7}}
| {{ISR}} || {{dts|6 January 2014}}<ref name=ISR>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/ms/il.html |title=Israel |website=International Relations |publisher=CERN |access-date=5 July 2014}}</ref> || style="text-align:right;"| {{nts|28.90}} || style="text-align:right;"| {{nts|2.36}}% || style="text-align:right;"| {{nts|2.7}}
|-
|-
| {{ROM}} || {{dts|17 July 2016}}<ref>{{cite web|url=https://press.cern/press-releases/2016/07/cern-welcomes-romania-its-twenty-second-member-state|title=CERN welcomes Romania as its twenty-second Member State {{!}} Media and Press Relations|website=press.cern|language=en|access-date=10 December 2017}}</ref> || style="text-align:right;" | {{nts|12.0}} || style="text-align:right;"| {{nts|1.05}}% || style="text-align:right;"| {{nts|0.6}}
| {{ROM}} || {{dts|17 July 2016}}<ref>{{cite web|url=https://press.cern/press-releases/2016/07/cern-welcomes-romania-its-twenty-second-member-state|title=CERN welcomes Romania as its twenty-second Member State {{!}} Media and Press Relations|website=press.cern|language=en|access-date=10 December 2017}}</ref> || style="text-align:right;" | {{nts|16.71}} || style="text-align:right;"| {{nts|1.36}}% || style="text-align:right;"| {{nts|0.6}}
|-
|-
| {{SRB}} || {{dts|24 March 2019}}<ref name=SRB>{{cite web |url=https://home.cern/news/press-release/cern/serbia-joins-cern-its-23rd-member-state |title=Serbia joins CERN as its 23rd Member State |website=Media and Press Relations |publisher=CERN | date=24 March 2019 |access-date=30 March 2019}}</ref> || style="text-align:right;"| {{nts|2.5}} || style="text-align:right;"| {{nts|0.221}}% || style="text-align:right;"| {{nts|0.1}}
| {{SRB}} || {{dts|24 March 2019}}<ref name=SRB>{{cite web |url=https://home.cern/news/press-release/cern/serbia-joins-cern-its-23rd-member-state |title=Serbia joins CERN as its 23rd Member State |website=Media and Press Relations |publisher=CERN | date=24 March 2019 |access-date=30 March 2019}}</ref> || style="text-align:right;"| {{nts|3.60}} || style="text-align:right;"| {{nts|0.293}}% || style="text-align:right;"| {{nts|0.1}}
|-
|-
|{{EST}}
|{{EST}}
|{{dts|30 August 2024}}<ref name="home.cern">{{Cite web|title=CERN welcomes Estonia as its 24th Member State|url=https://home.cern/news/press-release/cern/cern-welcomes-estonia-its-24th-member-state|access-date=2024-08-30|website=CERN|language=en}}</ref>|| style="text-align:right;" | {{nts|1.0}} || style="text-align:right;"|  N/A || style="text-align:right;"| N/A
|{{dts|30 August 2024}}<ref name="home.cern">{{Cite web|title=CERN welcomes Estonia as its 24th Member State|url=https://home.cern/news/press-release/cern/cern-welcomes-estonia-its-24th-member-state|access-date=2024-08-30|website=CERN|language=en}}</ref>|| style="text-align:right;" | {{nts|2.05}} || style="text-align:right;"| 0.167 || style="text-align:right;"| N/A
|-
|-
| {{SLO}} || {{dts|21 June 2025}}<ref>{{Cite web |date=2025-06-23 |title=CERN welcomes Slovenia as its 25th Member State |url=https://home.cern/news/press-release/cern/cern-welcomes-slovenia-its-25th-member-state |access-date=2025-06-23 |website=CERN |language=en}}</ref> || style="text-align:right;" | {{nts|1.0}} || style="text-align:right;" |  N/A || style="text-align:right;" | N/A
| {{SLO}} || {{dts|21 June 2025}}<ref>{{Cite web |date=2025-06-23 |title=CERN welcomes Slovenia as its 25th Member State |url=https://home.cern/news/press-release/cern/cern-welcomes-slovenia-its-25th-member-state |access-date=2025-06-23 |website=CERN |language=en}}</ref> || style="text-align:right;" | {{nts|3.15}} || style="text-align:right;" |  0.257 || style="text-align:right;" | N/A
|- class="sortbottom" style="background:#e9e9e9;"
|- class="sortbottom" style="background:#e9e9e9;"
| colspan=5 | '''Associate Members in the pre-stage to membership'''
| colspan=5 | '''Associate Members in the pre-stage to membership'''
|-
|-
| {{CYP}} || {{dts|1 April 2016}}<ref name="cyprus-assoc">{{cite web |url=https://international-relations.web.cern.ch/International-Relations/assoc/cyprus.html |title=Cyprus |website=International Relations |publisher=CERN |access-date=4 April 2016}}</ref> || style="text-align:right;"| {{nts|1.0}} || style="text-align:right;"|  N/A || style="text-align:right;"| N/A
| {{CYP}} || {{dts|1 April 2016}}<ref name="cyprus-assoc">{{cite web |url=https://international-relations.web.cern.ch/International-Relations/assoc/cyprus.html |title=Cyprus |website=International Relations |publisher=CERN |access-date=4 April 2016}}</ref> || style="text-align:right;"| {{nts|1.12}} || style="text-align:right;"|  N/A || style="text-align:right;"| N/A
|- class="sortbottom" style="background:#e9e9e9;"
|- class="sortbottom" style="background:#e9e9e9;"
| colspan=5 | '''Associate Members'''
| colspan=5 | '''Associate Members'''
|-
|-
| {{TUR}} || {{dts|6 May 2015}}<ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/assoc/turkey.html |title=Turkey |website=International Relations |publisher=CERN |access-date=28 August 2015}}</ref> || style="text-align:right;"| {{nts|5.7}} || style="text-align:right;"|  N/A || style="text-align:right;"|  N/A
| {{TUR}} || {{dts|6 May 2015}}<ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/assoc/turkey.html |title=Turkey |website=International Relations |publisher=CERN |access-date=28 August 2015}}</ref> || style="text-align:right;"| {{nts|4.96}} || style="text-align:right;"|  N/A || style="text-align:right;"|  N/A
|-
|-
| {{PAK}} || {{dts|31 July 2015}}<ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/assoc/pakistan.html |title=Pakistan |website=International Relations |publisher=CERN |access-date=21 November 2016}}</ref> || style="text-align:right;"| {{nts|1.7}} || style="text-align:right;"|  N/A || style="text-align:right;"| N/A
| {{PAK}} || {{dts|31 July 2015}}<ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/assoc/pakistan.html |title=Pakistan |website=International Relations |publisher=CERN |access-date=21 November 2016}}</ref> || style="text-align:right;"| {{nts|2.05}} || style="text-align:right;"|  N/A || style="text-align:right;"| N/A
|-
|-
| {{UKR}} || {{dts|5 October 2016}}<ref name="ukraine">{{cite web |url=https://home.cern/news/news/cern/ukraine-becomes-associate-member-cern |title=Ukraine becomes an associate member of CERN |website=Media and Press Relations |publisher=CERN |date=5 October 2016}}</ref> || style="text-align:right;"| {{nts|1.0}} || style="text-align:right;"|  N/A|| style="text-align:right;"| N/A
| {{UKR}} || {{dts|5 October 2016}}<ref name="ukraine">{{cite web |url=https://home.cern/news/news/cern/ukraine-becomes-associate-member-cern |title=Ukraine becomes an associate member of CERN |website=Media and Press Relations |publisher=CERN |date=5 October 2016}}</ref> || style="text-align:right;"| {{nts|1.03}} || style="text-align:right;"|  N/A|| style="text-align:right;"| N/A
|-
|-
| {{IND}} || {{dts|16 January 2017}}<ref name="india">{{cite web|url=https://home.cern/about/updates/2017/01/india-becomes-associate-member-state-cern |title=India becomes Associate Member State of CERN |website=CERN Updates |publisher=CERN |date=16 January 2017}}</ref> || style="text-align:right;"| {{nts|13.8}} || style="text-align:right;"| N/A || style="text-align:right;"| N/A
| {{IND}} || {{dts|16 January 2017}}<ref name="india">{{cite web|url=https://home.cern/about/updates/2017/01/india-becomes-associate-member-state-cern |title=India becomes Associate Member State of CERN |website=CERN Updates |publisher=CERN |date=16 January 2017}}</ref> || style="text-align:right;"| {{nts|18.35}} || style="text-align:right;"| N/A || style="text-align:right;"| N/A
|-
|-
| {{LIT}} || {{dts|8 January 2018}}<ref name="lithuania-assoc-cern"/> || style="text-align:right;"|{{Nts|1.0}}|| style="text-align:right;" | N/A || style="text-align:right;"| N/A
| {{LIT}} || {{dts|8 January 2018}}<ref name="lithuania-assoc-cern"/> || style="text-align:right;"|{{Nts|1.00}}|| style="text-align:right;" | N/A || style="text-align:right;"| N/A
|-
|-
|{{CRO}} || {{dts|10 October 2019}}<ref name="international-relations.web.cern.ch">{{Cite web|url=https://international-relations.web.cern.ch/stakeholder-relations/states/croatia|title=Croatia {{!}} International Relations|website=international-relations.web.cern.ch|access-date=5 January 2020}}</ref> || style="text-align:right;"| {{nts|0.25}} || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|{{CRO}} || {{dts|10 October 2019}}<ref name="international-relations.web.cern.ch">{{Cite web|url=https://international-relations.web.cern.ch/stakeholder-relations/states/croatia|title=Croatia {{!}} International Relations|website=international-relations.web.cern.ch|access-date=5 January 2020}}</ref> || style="text-align:right;"| {{nts|0.25}} || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|-
|-
|{{LAT}} || {{dts|2 August 2021}}<ref name="latvia-becomes-AMS-cern">{{cite news |title=Latvia becomes Associate Member State of CERN |url=https://home.cern/news/news/cern/latvia-becomes-associate-member-state-cern |access-date=5 November 2022 |work=CERN |date=2 August 2021 |language=en}}</ref> || style="text-align:right;"|  || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|{{LAT}} || {{dts|2 August 2021}}<ref name="latvia-becomes-AMS-cern">{{cite news |title=Latvia becomes Associate Member State of CERN |url=https://home.cern/news/news/cern/latvia-becomes-associate-member-state-cern |access-date=5 November 2022 |work=CERN |date=2 August 2021 |language=en}}</ref> || style="text-align:right;"| {{Nts|1.07}} || style="text-align:right;"| N/A || style="text-align:right;" | N/A
|-
|{{BRA}} || {{dts|13 March 2024}}<ref name="brazil-becomes-AMS-cern">{{cite news |title=Brazil becomes Associate Member State of CERN |url=https://home.cern/news/news/cern/brazil-becomes-associate-member-state-cern |access-date=22 March 2024 |work=CERN |date=22 March 2024 |language=en}}</ref> || style="text-align:right;"| {{Nts|10.23}} || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|-
|-
|{{BRA}} || {{dts|13 March 2024}}<ref name="brazil-becomes-AMS-cern">{{cite news |title=Brazil becomes Associate Member State of CERN |url=https://home.cern/news/news/cern/brazil-becomes-associate-member-state-cern |access-date=22 March 2024 |work=CERN |date=22 March 2024 |language=en}}</ref> || style="text-align:right;"| || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|{{IRE}} || {{dts|8 May 2025}}<ref name="ireland-becomes-AMS-cern">{{cite news |date=22 October 2025 |title=Ireland becomes an Associate Member State of CERN |url=https://home.cern/news/news/cern/ireland-becomes-associate-member-state-cern |access-date=22 October 2025 |work=CERN |language=en}}</ref>|| style="text-align:right;" | N/A || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|-
|{{CHI}} || {{dts|16 may 2025}}<ref name="Chile-becomes-AMS-cern">{{cite news |title=Chile to become an Associate Member State of CERN |url=https://home.cern/news/press-release/cern/chile-become-associate-member-state-cern |access-date=11 October 2025 |work=CERN |date=16 May 2025 |language=en}}</ref> || style="text-align:right;"| N/A || style="text-align:right;"| N/A  || style="text-align:right;" | N/A
|- class="sortbottom" style="background:#e9e9e9;"
|- class="sortbottom" style="background:#e9e9e9;"
| |{{hs|za}}'''Total Members, Candidates and Associates'''||  || style="text-align:right;" |'''{{nts|1,171.2}}'''<ref name="autogenerated1" /><ref>{{Cite web|title=2021 Annual Contributions to CERN budget|url=https://fap-dep.web.cern.ch/rpc/2021-annual-contributions-cern-budget|url-status=live|access-date=2021-02-21|website=CERN website|archive-url=https://web.archive.org/web/20210219020118/https://fap-dep.web.cern.ch/rpc/2021-annual-contributions-cern-budget |archive-date=19 February 2021 }}</ref>|| style="text-align:right;" |'''{{nts|100.0}}%'''|| style="text-align:right;" | N/A
| |{{hs|za}}'''Total Members, Candidates and Associates'''||  || style="text-align:right;" |'''{{nts|1,267.95}}'''<ref name="autogenerated1" /><ref>{{Cite web|title=2021 Annual Contributions to CERN budget|url=https://fap-dep.web.cern.ch/rpc/2021-annual-contributions-cern-budget|url-status=live|access-date=2021-02-21|website=CERN website|archive-url=https://web.archive.org/web/20210219020118/https://fap-dep.web.cern.ch/rpc/2021-annual-contributions-cern-budget |archive-date=19 February 2021 }}</ref>|| style="text-align:right;" |'''{{nts|100.0}}%'''|| style="text-align:right;" | N/A


|}
|}
Line 339: Line 345:
Associate Members, Candidates:
Associate Members, Candidates:
* Turkey signed an association agreement on 12 May 2014<ref name="TUR">{{cite web |url=https://home.cern/about/updates/2014/05/turkey-become-associate-member-state-cern |website=CERN press release |publisher=CERN |title=Turkey to become Associate Member State of CERN |date=12 May 2014 |access-date=5 July 2014}}</ref> and became an associate member on 6 May 2015.
* Turkey signed an association agreement on 12 May 2014<ref name="TUR">{{cite web |url=https://home.cern/about/updates/2014/05/turkey-become-associate-member-state-cern |website=CERN press release |publisher=CERN |title=Turkey to become Associate Member State of CERN |date=12 May 2014 |access-date=5 July 2014}}</ref> and became an associate member on 6 May 2015.
* Pakistan signed an association agreement on 19 December 2014<ref name="PAK">{{cite web |date=20 June 2014 |title=Pakistan Becomes the First Associate CERN Member from Asia |url=https://www.mofa.gov.pk/pr-details.php?prID=2050 |url-status=dead |archive-url=https://web.archive.org/web/20180626192200/http://www.mofa.gov.pk/pr-details.php?prID=2050 |archive-date=26 Jun 2018 |access-date=5 July 2014 |website=Government of Pakistan press releases |publisher=Ministry of Foreign Affairs, Government of Pakistan}}</ref> and became an associate member on 31 July 2015.<ref>{{cite web|title = Pakistan becomes Associate Member State of CERN |url = https://home.cern/about/updates/2015/07/pakistan-becomes-associate-member-state-cern|website = CERN|access-date = 1 August 2015}}</ref><ref>{{cite web|title = Pakistan officially becomes an associate member of CERN – The Express Tribune| date=31 July 2015 |url = https://tribune.com.pk/story/930265/pakistan-officially-becomes-an-associate-member-of-cern/|access-date = 1 August 2015}}</ref>
* Pakistan signed an association agreement on 19 December 2014<ref name="PAK">{{cite web |date=20 June 2014 |title=Pakistan Becomes the First Associate CERN Member from Asia |url=https://www.mofa.gov.pk/pr-details.php?prID=2050 |archive-url=https://web.archive.org/web/20180626192200/http://www.mofa.gov.pk/pr-details.php?prID=2050 |archive-date=26 Jun 2018 |access-date=5 July 2014 |website=Government of Pakistan press releases |publisher=Ministry of Foreign Affairs, Government of Pakistan}}</ref> and became an associate member on 31 July 2015.<ref>{{cite web|title = Pakistan becomes Associate Member State of CERN |url = https://home.cern/about/updates/2015/07/pakistan-becomes-associate-member-state-cern|website = CERN|access-date = 1 August 2015}}</ref><ref>{{cite web|title = Pakistan officially becomes an associate member of CERN – The Express Tribune| date=31 July 2015 |url = https://tribune.com.pk/story/930265/pakistan-officially-becomes-an-associate-member-of-cern/|access-date = 1 August 2015}}</ref>
* Cyprus signed an association agreement on 5 October 2012 and became an associate member in the pre-stage to membership on 1 April 2016.<ref name="cyprus-assoc" />
* Cyprus signed an association agreement on 5 October 2012 and became an associate member in the pre-stage to membership on 1 April 2016.<ref name="cyprus-assoc" />
* Ukraine signed an association agreement on 3 October 2013. The agreement was ratified on 5 October 2016.<ref name="ukraine" />
* Ukraine signed an association agreement on 3 October 2013. The agreement was ratified on 5 October 2016.<ref name="ukraine" />
* India signed an association agreement on 21 November 2016.<ref>{{cite web |url=https://press.cern/press-releases/2016/11/india-become-associate-member-state-cern |title=India to become Associate Member State of CERN |date=21 November 2016}}</ref> The agreement was ratified on 16 January 2017.<ref name="india" />
* India signed an association agreement on 21 November 2016.<ref>{{cite web |url=https://press.cern/press-releases/2016/11/india-become-associate-member-state-cern |title=India to become Associate Member State of CERN |date=21 November 2016}}</ref> The agreement was ratified on 16 January 2017.<ref name="india" />
* Slovenia was approved for admission as an Associate Member state in the pre-stage to membership on 16 December 2016.<ref name="slovenia-assoc">{{cite web |date=16 December 2016 |title=Slovenia to enter the Associate Member State family of CERN |url=https://press.cern/press-releases/2016/12/slovenia-enter-associate-member-state-family-cern |website=Media and Press Relations |publisher=CERN}}</ref> The agreement was ratified on 4 July 2017.<ref name="slovenia-assoc-ratify">{{cite web |date=4 July 2017 |title=Slovenia becomes an Associate Member in the pre-stage to Membership at CERN |url=https://press.cern/update/2017/07/slovenia-becomes-associate-member-pre-stage-membership-cern |url-status=dead |archive-url=https://web.archive.org/web/20181103080639/https://press.cern/update/2017/07/slovenia-becomes-associate-member-pre-stage-membership-cern |archive-date=3 November 2018 |access-date=4 July 2017 |website=Media and Press Relations |publisher=CERN}}</ref>
* Slovenia was approved for admission as an Associate Member state in the pre-stage to membership on 16 December 2016.<ref name="slovenia-assoc">{{cite web |date=16 December 2016 |title=Slovenia to enter the Associate Member State family of CERN |url=https://press.cern/press-releases/2016/12/slovenia-enter-associate-member-state-family-cern |website=Media and Press Relations |publisher=CERN}}</ref> The agreement was ratified on 4 July 2017.<ref name="slovenia-assoc-ratify">{{cite web |date=4 July 2017 |title=Slovenia becomes an Associate Member in the pre-stage to Membership at CERN |url=https://press.cern/update/2017/07/slovenia-becomes-associate-member-pre-stage-membership-cern |archive-url=https://web.archive.org/web/20181103080639/https://press.cern/update/2017/07/slovenia-becomes-associate-member-pre-stage-membership-cern |archive-date=3 November 2018 |access-date=4 July 2017 |website=Media and Press Relations |publisher=CERN}}</ref>
* Lithuania was approved for admission as an Associate Member state on 16 June 2017. The association agreement was signed on 27 June 2017 and ratified on 8 January 2018.<ref name="lithuania-assoc-lrp">{{cite web|url=https://www.lrp.lt/en/press-centre/press-releases/lithuania-has-become-associate-member-of-cern/27822|title=Lithuania has become associate member of CERN|website=lrp.lt}}</ref><ref name="lithuania-assoc-cern">{{cite web |author=Jarlett |first=Harriet Kim |date=8 January 2018 |title=Lithuania becomes Associate Member State of CERN |url=https://home.cern/about/updates/2018/01/lithuania-becomes-associate-member-state-cern |url-status=dead |archive-url=https://web.archive.org/web/20180314173513/https://home.cern/about/updates/2018/01/lithuania-becomes-associate-member-state-cern |archive-date=14 March 2018 |access-date=8 January 2018 |website=CERN}}</ref>
* Lithuania was approved for admission as an Associate Member state on 16 June 2017. The association agreement was signed on 27 June 2017 and ratified on 8 January 2018.<ref name="lithuania-assoc-lrp">{{cite web|url=https://www.lrp.lt/en/press-centre/press-releases/lithuania-has-become-associate-member-of-cern/27822|title=Lithuania has become associate member of CERN|website=lrp.lt}}</ref><ref name="lithuania-assoc-cern">{{cite web |author=Jarlett |first=Harriet Kim |date=8 January 2018 |title=Lithuania becomes Associate Member State of CERN |url=https://home.cern/about/updates/2018/01/lithuania-becomes-associate-member-state-cern |archive-url=https://web.archive.org/web/20180314173513/https://home.cern/about/updates/2018/01/lithuania-becomes-associate-member-state-cern |archive-date=14 March 2018 |access-date=8 January 2018 |website=CERN}}</ref>
* Croatia was approved for admission as an Associate Member state on 28 February 2019. The agreement was ratified on 10 October 2019.<ref name="international-relations.web.cern.ch" />
* Croatia was approved for admission as an Associate Member state on 28 February 2019. The agreement was ratified on 10 October 2019.<ref name="international-relations.web.cern.ch" />
* Latvia and CERN signed an associate membership agreement on 14 April 2021.<ref>{{cite news |title=Latvia to join CERN as an Associate Member State |url=https://home.cern/news/press-release/cern/latvia-join-cern-associate-member-state |access-date=5 November 2022 |work=CERN |date=14 April 2021 |language=en}}</ref> Latvia was formally admitted as an Associate Member on 2 August 2021.<ref name="latvia-becomes-AMS-cern" />
* Latvia and CERN signed an associate membership agreement on 14 April 2021.<ref>{{cite news |title=Latvia to join CERN as an Associate Member State |url=https://home.cern/news/press-release/cern/latvia-join-cern-associate-member-state |access-date=5 November 2022 |work=CERN |date=14 April 2021 |language=en}}</ref> Latvia was formally admitted as an Associate Member on 2 August 2021.<ref name="latvia-becomes-AMS-cern" />
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* Iceland – 11 September 1996
* Iceland – 11 September 1996
* Iran – 5 July 2001
* Iran – 5 July 2001
* Jordan – 12 June 2003<ref>{{cite web |url=https://international-relations.web.cern.ch/international-relations/nms/jordan.html |title=Jordan |website=International Relations |publisher=CERN |access-date=4 July 2012}}</ref> MoU with Jordan and [[International Centre for Synchrotron-Light for Experimental Science Applications in the Middle East|SESAME]], in preparation of a cooperation agreement signed in 2004.<ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/orgints/sesame.html |title=SESAME |website=International Relations |publisher=CERN |date=17 October 2011 |access-date=4 July 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120701224730/https://international-relations.web.cern.ch/International-Relations/orgints/sesame.html |archive-date=1 July 2012}}</ref>
* Jordan – 12 June 2003<ref>{{cite web |url=https://international-relations.web.cern.ch/international-relations/nms/jordan.html |title=Jordan |website=International Relations |publisher=CERN |access-date=4 July 2012}}</ref> MoU with Jordan and [[International Centre for Synchrotron-Light for Experimental Science Applications in the Middle East|SESAME]], in preparation of a cooperation agreement signed in 2004.<ref>{{cite web |url=https://international-relations.web.cern.ch/International-Relations/orgints/sesame.html |title=SESAME |website=International Relations |publisher=CERN |date=17 October 2011 |access-date=4 July 2012 |archive-url=https://web.archive.org/web/20120701224730/https://international-relations.web.cern.ch/International-Relations/orgints/sesame.html |archive-date=1 July 2012}}</ref>
* Kazakhstan – June 2018
* Kazakhstan – June 2018
* Lebanon – 2015
* Lebanon – 2015
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}}
}}


CERN also has scientific contacts with the following other countries:<ref name="member-states"/><ref>{{Cite web |title=Associate & Non-Member State Relations {{!}} International Relations |url=https://international-relations.web.cern.ch/stakeholder-relations/Associate-Non-Member-State-Relations |access-date=2023-08-28 |website=international-relations.web.cern.ch}}</ref>
CERN also has scientific contacts with the following other countries and regions:<ref name="member-states"/><ref>{{Cite web |title=Associate & Non-Member State Relations {{!}} International Relations |url=https://international-relations.web.cern.ch/stakeholder-relations/Associate-Non-Member-State-Relations |access-date=2023-08-28 |website=international-relations.web.cern.ch}}</ref>


{{columns-list|* Bahrain
{{columns-list|* Bahrain
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* Hong Kong
* Hong Kong
* Indonesia
* Indonesia
* Ireland
* Kuwait
* Kuwait
* Luxemburg
* Luxemburg
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* [[European Molecular Biology Laboratory]], organization based on the CERN model<ref>{{Cite web |date=2014-04-13 |title=EMBL History – EMBL |url=http://www.embl.de/aboutus/general_information/history/ |archive-url=https://web.archive.org/web/20140413125139/http://www.embl.de/aboutus/general_information/history/ |archive-date=13 April 2014 |access-date=2021-11-02}}</ref>
* [[European Molecular Biology Laboratory]], organization based on the CERN model<ref>{{Cite web |date=2014-04-13 |title=EMBL History – EMBL |url=http://www.embl.de/aboutus/general_information/history/ |archive-url=https://web.archive.org/web/20140413125139/http://www.embl.de/aboutus/general_information/history/ |archive-date=13 April 2014 |access-date=2021-11-02}}</ref>
* [[European Space Research Organisation]] (since 1975 [[European Space Agency|ESA]]), organization based on the CERN model<ref>{{Cite book|last1=Bonnet|first1=Roger-M.|url=https://books.google.com/books?id=shvdfRZ6nZ8C&pg=58|title=International Cooperation in Space: The Example of the European Space Agency|last2=Manno|first2=Vittorio|publisher=Harvard University Press|year=1994|isbn=978-0-674-45835-2|pages=58–59|language=en}}</ref>
* [[European Space Research Organisation]] (since 1975 [[European Space Agency|ESA]]), organization based on the CERN model<ref>{{Cite book|last1=Bonnet|first1=Roger-M.|url=https://books.google.com/books?id=shvdfRZ6nZ8C&pg=58|title=International Cooperation in Space: The Example of the European Space Agency|last2=Manno|first2=Vittorio|publisher=Harvard University Press|year=1994|isbn=978-0-674-45835-2|pages=58–59|language=en}}</ref>
* [[European Southern Observatory]], organization based on the CERN model<ref>{{Cite book|last=Blaauw|first=Adriaan|url=https://www.eso.org/public/products/books/book_0044/|title=ESO's Early History: The European Southern Observatory from Concept to Reality|publisher=ESO|year=1991|isbn=978-3-923524-40-2|pages=8|language=en}}</ref>
* [[European Southern Observatory]], organization based on the CERN model.<ref>{{Cite book|last=Blaauw|first=Adriaan|url=https://www.eso.org/public/products/books/book_0044/|title=ESO's Early History: The European Southern Observatory from Concept to Reality|publisher=ESO|year=1991|isbn=978-3-923524-40-2|page=8|language=en}}</ref>Also, the two organisations share a pension fund<ref>{{Cite web |title=Home {{!}} CERN Pension Fund |url=https://pensionfund.cern.ch/en |access-date=2025-07-17 |website=pensionfund.cern.ch}}</ref> for their employees.
* [[Joint Institute for Nuclear Research|JINR]], observer to CERN Council,<ref>{{Cite web|title=JINR {{!}} International Relations|url=https://international-relations.web.cern.ch/stakeholder-relations/states/jinr|access-date=2021-11-02|website=international-relations.web.cern.ch}}</ref> CERN is represented in the JINR Council.<ref>{{Cite web|title=Governing and Advisory Bodies of JINR|url=http://www.jinr.ru/jinr_structure-en/realisators-en/|access-date=2021-11-02|website=Joint Institute for Nuclear Research|language=en-US}}</ref> JINR is currently suspended, due to the CERN Council Resolution of 25 March 2022.<ref name="member-states" />
* [[Joint Institute for Nuclear Research|JINR]], observer to CERN Council,<ref>{{Cite web|title=JINR {{!}} International Relations|url=https://international-relations.web.cern.ch/stakeholder-relations/states/jinr|access-date=2021-11-02|website=international-relations.web.cern.ch}}</ref> CERN is represented in the JINR Council.<ref>{{Cite web|title=Governing and Advisory Bodies of JINR|url=http://www.jinr.ru/jinr_structure-en/realisators-en/|access-date=2021-11-02|website=Joint Institute for Nuclear Research|language=en-US}}</ref> JINR is currently suspended, due to the CERN Council Resolution of 25 March 2022.<ref name="member-states" />
* [[Synchrotron-Light for Experimental Science and Applications in the Middle East|SESAME]], CERN is an observer to the SESAME Council<ref>{{Cite web|title=Members and observers of SESAME {{!}} SESAME {{!}} Synchrotron-light for Experimental Science and Applications in the Middle East|url=https://www.sesame.org.jo/about-us/members-sesame|url-status=live|access-date=2021-11-02|website=www.sesame.org.jo|archive-url=https://web.archive.org/web/20200201230148/https://www.sesame.org.jo/about-us/members-sesame |archive-date=1 February 2020 }}</ref>
* [[Synchrotron-Light for Experimental Science and Applications in the Middle East|SESAME]], CERN is an observer to the SESAME Council<ref>{{Cite web|title=Members and observers of SESAME {{!}} SESAME {{!}} Synchrotron-light for Experimental Science and Applications in the Middle East|url=https://www.sesame.org.jo/about-us/members-sesame|url-status=live|access-date=2021-11-02|website=www.sesame.org.jo|archive-url=https://web.archive.org/web/20200201230148/https://www.sesame.org.jo/about-us/members-sesame |archive-date=1 February 2020 }}</ref>
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}}
}}


'''.cern''' is a [[top-level domain]] for CERN.<ref>{{Cite web |title=.cern – ICANNWiki |url=https://icannwiki.org/.cern |access-date=2021-04-07 |website=icannwiki.org}}</ref><ref>{{Cite web|title=About .cern|url=https://nic.cern/|access-date=2021-04-07|website=nic.cern}}</ref> It was registered on 13 August 2014.<ref name="IANA">{{cite web |title=.cern Domain Delegation Data |url=https://www.iana.org/domains/root/db/cern.html |website=IANA |publisher=Internet Assigned Numbers Authority |accessdate=19 September 2019}}</ref><ref>{{Cite web |url = https://nic.cern/registration-policy/
'''.cern''' is a [[top-level domain]] for CERN.<ref>{{Cite web |title=.cern – ICANNWiki |url=https://icannwiki.org/.cern |access-date=2021-04-07 |website=icannwiki.org}}</ref><ref>{{Cite web|title=About .cern|url=https://nic.cern/|access-date=2021-04-07|website=nic.cern}}</ref> It was registered on 13 August 2014.<ref name="IANA">{{cite web |title=.cern Domain Delegation Data |url=https://www.iana.org/domains/root/db/cern.html |website=IANA |publisher=Internet Assigned Numbers Authority |access-date=19 September 2019}}</ref><ref>{{Cite web |url = https://nic.cern/registration-policy/
  |title = .cern registration policy |publisher = CERN  |accessdate = 19 September 2019}}</ref> On 20 October 2015, CERN moved its main website to https://home.cern.<ref>{{Cite journal |last1=Alvarez |first1=E. |last2=de Molina |first2=M. Malo |last3=Salwerowicz |first3=M. |last4=De Sousa |first4=B. Silva |last5=Smith |first5=T. |last6=Wagner |first6=A. |year=2017 |title=First experience with the new .cern Top Level Domain |journal=Journal of Physics: Conference Series |volume=898 |issue=10 |pages=102012 |bibcode=2017JPhCS.898j2012A |doi=10.1088/1742-6596/898/10/102012 |issn=1742-6588 |doi-access=free}}</ref><ref>{{Cite web|title=Birthplace of the World Wide Web CERN Launches home.cern|url=https://www.circleid.com/posts/20160111_birthplace_of_the_world_wide_web_cern_launches_homecern/|access-date=2021-04-07|website=www.circleid.com|language=en}}</ref>
  |title = .cern registration policy |publisher = CERN  |access-date = 19 September 2019}}</ref> On 20 October 2015, CERN moved its main website to https://home.cern.<ref>{{Cite journal |last1=Alvarez |first1=E. |last2=de Molina |first2=M. Malo |last3=Salwerowicz |first3=M. |last4=De Sousa |first4=B. Silva |last5=Smith |first5=T. |last6=Wagner |first6=A. |year=2017 |title=First experience with the new .cern Top Level Domain |journal=Journal of Physics: Conference Series |volume=898 |issue=10 |article-number=102012 |bibcode=2017JPhCS.898j2012A |doi=10.1088/1742-6596/898/10/102012 |issn=1742-6588 |doi-access=free}}</ref><ref>{{Cite web|title=Birthplace of the World Wide Web CERN Launches home.cern|url=https://www.circleid.com/posts/20160111_birthplace_of_the_world_wide_web_cern_launches_homecern/|access-date=2021-04-07|website=www.circleid.com|language=en}}</ref>


== Open science ==
== Open science ==
The [[Open science|Open Science movement]] focuses on making scientific research openly accessible and on creating knowledge through open tools and processes. [[Open access]], [[open data]], [[Open-source software|open source software]] and [[Open-source hardware|hardware]], [[Open-source license|open licenses]], [[digital preservation]] and [[Reproducibility#Reproducible research|reproducible research]] are primary components of open science and areas in which CERN has been working towards since its formation.
The [[Open science|Open Science movement]] focuses on making scientific research openly accessible and on creating knowledge through open tools and processes. [[Open access]], [[open data]], [[Open-source software|open source software]] and [[Open-source hardware|hardware]], [[Open-source license|open licenses]], [[digital preservation]] and [[Reproducibility#Reproducible research|reproducible research]] are primary components of open science and areas in which CERN has been working towards since its formation.


CERN has developed policies and official documents that enable and promote open science, starting with CERN's founding convention in 1953 which indicated that all its results are to be published or made generally available.<ref name=":0">{{Cite web|last=|first=|date=|title=Convention for the Establishment of a European Organization for Nuclear Research {{!}} CERN Council|url=https://council.web.cern.ch/en/convention|url-status=dead|archive-url=https://web.archive.org/web/20210218235743/https://council.web.cern.ch/en/convention|archive-date=18 February 2021|access-date=2021-02-08|website=council.web.cern.ch|at=Article II}}</ref> Since then, CERN published its open access policy in 2014,<ref>{{Cite report |url=https://cds.cern.ch/record/1955574 |title=Open Access Policy for CERN Publications |date=2021 |publisher=CERN |location=Geneva}}</ref> which ensures that all publications by CERN authors will be published with [[Gold OA|gold open access]] and most recently an open data policy that was endorsed by the four main LHC collaborations ([[ALICE experiment|ALICE]], [[ATLAS experiment|ATLAS]], [[Compact Muon Solenoid|CMS]] and [[LHCb experiment|LHCb]]).<ref>{{Cite book|url=https://cds.cern.ch/record/2745133|title=CERN Open Data Policy for the LHC Experiments|date=2020|doi=10.17181/CERN.QXNK.8L2G |editor-last=CERN. Geneva |author1=CERN. Geneva }}</ref>  
CERN has developed policies and official documents that enable and promote open science, starting with CERN's founding convention in 1953 which indicated that all its results are to be published or made generally available.<ref name=":0">{{Cite web|last=|first=|date=|title=Convention for the Establishment of a European Organization for Nuclear Research {{!}} CERN Council|url=https://council.web.cern.ch/en/convention|archive-url=https://web.archive.org/web/20210218235743/https://council.web.cern.ch/en/convention|archive-date=18 February 2021|access-date=2021-02-08|website=council.web.cern.ch|at=Article II}}</ref> Since then, CERN published its open access policy in 2014,<ref>{{Cite report |url=https://cds.cern.ch/record/1955574 |title=Open Access Policy for CERN Publications |date=2021 |publisher=CERN |location=Geneva}}</ref> which ensures that all publications by CERN authors will be published with [[Gold OA|gold open access]] and most recently an open data policy that was endorsed by the four main LHC collaborations ([[ALICE experiment|ALICE]], [[ATLAS experiment|ATLAS]], [[Compact Muon Solenoid|CMS]] and [[LHCb experiment|LHCb]]).<ref>{{Cite book|url=https://cds.cern.ch/record/2745133|title=CERN Open Data Policy for the LHC Experiments|date=2020|doi=10.17181/CERN.QXNK.8L2G |editor-last=CERN. Geneva |author1=CERN. Geneva }}</ref>  


The open data policy complements the open access policy, addressing the public release of scientific data collected by LHC experiments after a suitable embargo period. Prior to this open data policy, guidelines for data preservation, access and reuse were implemented by each collaboration individually through their own policies which are updated when necessary.<ref>{{Citation|last=ALICE Collaboration|title=ALICE data preservation strategy|date=2014|url=https://opendata.cern.ch/record/412|publisher=CERN Open Data Portal|doi=10.7483/opendata.alice.54ne.x2ea|access-date=2021-02-08}}</ref><ref>{{Citation|last=ATLAS Collaboration|title=ATLAS Data Access Policy|date=2014|url=https://opendata.cern.ch/record/413|publisher=CERN Open Data Portal|doi=10.7483/opendata.atlas.t9yr.y7mz|access-date=2021-02-08}}</ref><ref>{{Citation|last=CMS Collaboration|title=CMS data preservation, re-use and open access policy|date=2014|url=https://opendata.cern.ch/record/411|publisher=CERN Open Data Portal|doi=10.7483/opendata.cms.udbf.jkr9|access-date=2021-02-08}}</ref><ref>{{Citation|last=LHCb Collaboration|title=LHCb External Data Access Policy|date=2014|url=https://opendata.cern.ch/record/410|others=Peter Clarke|publisher=CERN Open Data Portal|doi=10.7483/opendata.lhcb.hkjw.twsz|access-date=2021-02-08}}</ref>  
The open data policy complements the open access policy, addressing the public release of scientific data collected by LHC experiments after a suitable embargo period. Prior to this open data policy, guidelines for data preservation, access and reuse were implemented by each collaboration individually through their own policies which are updated when necessary.<ref>{{Citation|last=ALICE Collaboration|title=ALICE data preservation strategy|date=2014|url=https://opendata.cern.ch/record/412|publisher=CERN Open Data Portal|doi=10.7483/opendata.alice.54ne.x2ea|access-date=2021-02-08}}</ref><ref>{{Citation|last=ATLAS Collaboration|title=ATLAS Data Access Policy|date=2014|url=https://opendata.cern.ch/record/413|publisher=CERN Open Data Portal|doi=10.7483/opendata.atlas.t9yr.y7mz|access-date=2021-02-08}}</ref><ref>{{Citation|last=CMS Collaboration|title=CMS data preservation, re-use and open access policy|date=2014|url=https://opendata.cern.ch/record/411|publisher=CERN Open Data Portal|doi=10.7483/opendata.cms.udbf.jkr9|access-date=2021-02-08}}</ref><ref>{{Citation|last=LHCb Collaboration|title=LHCb External Data Access Policy|date=2014|url=https://opendata.cern.ch/record/410|others=Peter Clarke|publisher=CERN Open Data Portal|doi=10.7483/opendata.lhcb.hkjw.twsz|access-date=2021-02-08}}</ref>  


The European Strategy for Particle Physics, a document mandated by the CERN Council that forms the cornerstone of Europe's decision-making for the future of particle physics, was last updated in 2020 and affirmed the organisation's role within the open science landscape by stating: "The particle physics community should work with the relevant authorities to help shape the emerging consensus on open science to be adopted for publicly-funded research, and should then implement a policy of open science for the field".<ref>{{Cite book|last=European Strategy Group|date=2020|title=2020 Update of the European Strategy for Particle Physics|publisher=CERN Council|url=https://cds.cern.ch/record/2720129|language=en|doi=10.17181/ESU2020|isbn=9789290835752}}</ref>
The European Strategy for Particle Physics, a document mandated by the CERN Council that forms the cornerstone of Europe's decision-making for the future of particle physics, was last updated in 2020 and affirmed the organisation's role within the open science landscape by stating: "The particle physics community should work with the relevant authorities to help shape the emerging consensus on open science to be adopted for publicly-funded research, and should then implement a policy of open science for the field".<ref>{{Cite book|last=European Strategy Group|date=2020|title=2020 Update of the European Strategy for Particle Physics|publisher=CERN Council|url=https://cds.cern.ch/record/2720129|language=en|doi=10.17181/ESU2020|isbn=978-92-9083-575-2}}</ref>


Beyond the policy level, CERN has established a variety of services and tools to enable and guide open science at CERN, and in particle physics more generally. On the publishing side, CERN has initiated and operates a global cooperative project, the [[Sponsoring Consortium for Open Access Publishing in Particle Physics]], SCOAP3, to convert scientific articles in high-energy physics to open access. In 2018, the SCOAP3 partnership represented 3,000+ libraries from 44 countries and 3 intergovernmental organizations who have worked collectively to convert research articles in high-energy physics across 11 leading journals in the discipline to open access.<ref>{{cite book|last1=Loizides|first1=F.|url=https://ebooks.iospress.nl/book/positioning-and-power-in-academic-publishing-players-agents-and-agendas-proceedings-of-the-20th-international-conference-on-electronic-publishing|title=Positioning and Power in Academic Publishing: Players, Agents and Agendas: Proceedings of the 20th International Conference on Electronic Publishing|last2=Smidt|first2=B.|date=2016|publisher=IOS Press|isbn=978-1-61499-649-1|page=9}}</ref><ref>{{Cite journal|last1=Alexander Kohls|last2=Salvatore Mele|date=2018-04-09|title=Converting the Literature of a Scientific Field to Open Access through Global Collaboration: The Experience of SCOAP3 in Particle Physics|journal=Publications|language=en|volume=6|issue=2|pages=15|doi=10.3390/publications6020015|issn=2304-6775|doi-access=free}}</ref>
Beyond the policy level, CERN has established a variety of services and tools to enable and guide open science at CERN, and in particle physics more generally. On the publishing side, CERN has initiated and operates a global cooperative project, the [[Sponsoring Consortium for Open Access Publishing in Particle Physics]], SCOAP3, to convert scientific articles in high-energy physics to open access. In 2018, the SCOAP3 partnership represented 3,000+ libraries from 44 countries and 3 intergovernmental organizations who have worked collectively to convert research articles in high-energy physics across 11 leading journals in the discipline to open access.<ref>{{cite book|last1=Loizides|first1=F.|url=https://ebooks.iospress.nl/book/positioning-and-power-in-academic-publishing-players-agents-and-agendas-proceedings-of-the-20th-international-conference-on-electronic-publishing|title=Positioning and Power in Academic Publishing: Players, Agents and Agendas: Proceedings of the 20th International Conference on Electronic Publishing|last2=Smidt|first2=B.|date=2016|publisher=IOS Press|isbn=978-1-61499-649-1|page=9}}</ref><ref>{{Cite journal|last1=Alexander Kohls|last2=Salvatore Mele|date=2018-04-09|title=Converting the Literature of a Scientific Field to Open Access through Global Collaboration: The Experience of SCOAP3 in Particle Physics|journal=Publications|language=en|volume=6|issue=2|page=15|doi=10.3390/publications6020015|issn=2304-6775|doi-access=free}}</ref>


Public-facing results can be served by various CERN-based services depending on their use case: the [https://opendata.cern.ch/ CERN Open Data portal],<ref>{{Cite journal|last1=Cowton|first1=J|last2=Dallmeier-Tiessen|first2=S|last3=Fokianos|first3=P|last4=Rueda|first4=L|last5=Herterich|first5=P|last6=Kunčar|first6=J|last7=Šimko|first7=T|last8=Smith|first8=T|date=2015-12-23|title=Open Data and Data Analysis Preservation Services for LHC Experiments|journal=Journal of Physics: Conference Series|volume=664|issue=3|pages=032030|doi=10.1088/1742-6596/664/3/032030|bibcode=2015JPhCS.664c2030C|s2cid=114252783|issn=1742-6588|doi-access=free}}</ref> [[Zenodo]], the [https://cds.cern.ch/ CERN Document Server],<ref>{{Cite journal|last1=Vesely|first1=Martin|last2=Baron|first2=Thomas|last3=Le Meur|first3=Jean-Yves|last4=Simko|first4=Tibor|year=2004|title=CERN document server: Document management system for grey literature in a networked environment|url=https://link.springer.com/10.1007/BF02910863|journal=Publishing Research Quarterly|language=en|volume=20|issue=1|pages=77–83|doi=10.1007/BF02910863|s2cid=144064139|issn=1053-8801|via=}}</ref> [[INSPIRE-HEP|INSPIRE]] and [https://www.hepdata.net/ HEPData]<ref>{{Cite journal|last1=Maguire|first1=Eamonn|last2=Heinrich|first2=Lukas|last3=Watt|first3=Graeme|year=2017|title=HEPData: a repository for high energy physics data|url=https://iopscience.iop.org/article/10.1088/1742-6596/898/10/102006|journal=Journal of Physics: Conference Series|volume=898|issue=10|pages=102006|doi=10.1088/1742-6596/898/10/102006|arxiv=1704.05473|bibcode=2017JPhCS.898j2006M|s2cid=943291|issn=1742-6588|via=}}</ref> are the core services used by the researchers and community at CERN, as well as the wider high-energy physics community for the publication of their documents, data, software, multimedia, etc. CERN's efforts towards preservation and reproducible research are best represented by a suite of services addressing the entire physics analysis lifecycle, such as data, software and computing environment. [https://analysispreservation.cern.ch/ CERN Analysis Preservation]<ref>{{Cite journal|last1=Fokianos|first1=Pamfilos|last2=Feger|first2=Sebastian|last3=Koutsakis|first3=Ilias|last4=Lavasa|first4=Artemis|last5=Maciulaitis|first5=Rokas|last6=Naim|first6=Kamran|last7=Okraska|first7=Jan|last8=Papadopoulos|first8=Antonios|last9=Rodríguez|first9=Diego|last10=Šimko|first10=Tibor|last11=Trzcinska|first11=Anna|date=2020|editor-last=Doglioni|editor-first=C.|editor2-last=Kim|editor2-first=D.|editor3-last=Stewart|editor3-first=G.A.|editor4-last=Silvestris|editor4-first=L.|editor5-last=Jackson|editor5-first=P.|editor6-last=Kamleh|editor6-first=W.|title=CERN Analysis Preservation and Reuse Framework: FAIR research data services for LHC experiments|journal=EPJ Web of Conferences|volume=245|pages=06011|doi=10.1051/epjconf/202024506011|bibcode=2020EPJWC.24506011F|s2cid=229268573|issn=2100-014X|doi-access=free}}</ref> helps researchers to preserve and document the various components of their physics analyses. [https://reana.io/ REANA] (Reusable Analyses)<ref>{{Cite journal|last1=Šimko|first1=Tibor|last2=Heinrich|first2=Lukas|last3=Hirvonsalo|first3=Harri|last4=Kousidis|first4=Dinos|last5=Rodríguez|first5=Diego|date=2019|editor-last=Forti|editor-first=A.|editor2-last=Betev|editor2-first=L.|editor3-last=Litmaath|editor3-first=M.|editor4-last=Smirnova|editor4-first=O.|editor5-last=Hristov|editor5-first=P.|title=REANA: A System for Reusable Research Data Analyses|journal=EPJ Web of Conferences|volume=214|pages=06034|doi=10.1051/epjconf/201921406034|bibcode=2019EPJWC.21406034S|s2cid=187062028|issn=2100-014X|doi-access=free}}</ref> enables the instantiating of preserved research data analyses on the cloud.
Public-facing results can be served by various CERN-based services depending on their use case: the [https://opendata.cern.ch/ CERN Open Data portal],<ref>{{Cite journal|last1=Cowton|first1=J|last2=Dallmeier-Tiessen|first2=S|last3=Fokianos|first3=P|last4=Rueda|first4=L|last5=Herterich|first5=P|last6=Kunčar|first6=J|last7=Šimko|first7=T|last8=Smith|first8=T|date=2015-12-23|title=Open Data and Data Analysis Preservation Services for LHC Experiments|journal=Journal of Physics: Conference Series|volume=664|issue=3|article-number=032030|doi=10.1088/1742-6596/664/3/032030|bibcode=2015JPhCS.664c2030C|s2cid=114252783|issn=1742-6588|doi-access=free}}</ref> [[Zenodo]], the [https://cds.cern.ch/ CERN Document Server],<ref>{{Cite journal|last1=Vesely|first1=Martin|last2=Baron|first2=Thomas|last3=Le Meur|first3=Jean-Yves|last4=Simko|first4=Tibor|year=2004|title=CERN document server: Document management system for grey literature in a networked environment|url=https://link.springer.com/10.1007/BF02910863|journal=Publishing Research Quarterly|language=en|volume=20|issue=1|pages=77–83|doi=10.1007/BF02910863|s2cid=144064139|issn=1053-8801|via=}}</ref> [[INSPIRE-HEP|INSPIRE]] and [https://www.hepdata.net/ HEPData]<ref>{{Cite journal|last1=Maguire|first1=Eamonn|last2=Heinrich|first2=Lukas|last3=Watt|first3=Graeme|year=2017|title=HEPData: a repository for high energy physics data|url=https://iopscience.iop.org/article/10.1088/1742-6596/898/10/102006|journal=Journal of Physics: Conference Series|volume=898|issue=10|article-number=102006|doi=10.1088/1742-6596/898/10/102006|arxiv=1704.05473|bibcode=2017JPhCS.898j2006M|s2cid=943291|issn=1742-6588|via=}}</ref> are the core services used by the researchers and community at CERN, as well as the wider high-energy physics community for the publication of their documents, data, software, multimedia, etc. CERN's efforts towards preservation and reproducible research are best represented by a suite of services addressing the entire physics analysis lifecycle, such as data, software and computing environment. [https://analysispreservation.cern.ch/ CERN Analysis Preservation]<ref>{{Cite journal|last1=Fokianos|first1=Pamfilos|last2=Feger|first2=Sebastian|last3=Koutsakis|first3=Ilias|last4=Lavasa|first4=Artemis|last5=Maciulaitis|first5=Rokas|last6=Naim|first6=Kamran|last7=Okraska|first7=Jan|last8=Papadopoulos|first8=Antonios|last9=Rodríguez|first9=Diego|last10=Šimko|first10=Tibor|last11=Trzcinska|first11=Anna|date=2020|editor-last=Doglioni|editor-first=C.|editor2-last=Kim|editor2-first=D.|editor3-last=Stewart|editor3-first=G.A.|editor4-last=Silvestris|editor4-first=L.|editor5-last=Jackson|editor5-first=P.|editor6-last=Kamleh|editor6-first=W.|title=CERN Analysis Preservation and Reuse Framework: FAIR research data services for LHC experiments|journal=EPJ Web of Conferences|volume=245|page=06011|doi=10.1051/epjconf/202024506011|bibcode=2020EPJWC.24506011F|s2cid=229268573|issn=2100-014X|doi-access=free}}</ref> helps researchers to preserve and document the various components of their physics analyses. [https://reana.io/ REANA] (Reusable Analyses)<ref>{{Cite journal|last1=Šimko|first1=Tibor|last2=Heinrich|first2=Lukas|last3=Hirvonsalo|first3=Harri|last4=Kousidis|first4=Dinos|last5=Rodríguez|first5=Diego|date=2019|editor-last=Forti|editor-first=A.|editor2-last=Betev|editor2-first=L.|editor3-last=Litmaath|editor3-first=M.|editor4-last=Smirnova|editor4-first=O.|editor5-last=Hristov|editor5-first=P.|title=REANA: A System for Reusable Research Data Analyses|journal=EPJ Web of Conferences|volume=214|page=06034|doi=10.1051/epjconf/201921406034|bibcode=2019EPJWC.21406034S|s2cid=187062028|issn=2100-014X|doi-access=free}}</ref> enables the instantiating of preserved research data analyses on the cloud.


All services are built using [[Open-source software|open source software]] and strive towards compliance with best effort principles, such as the [[FAIR data|FAIR principles]], the [[FORCE11|FORCE11 guidelines]] and [[Plan S]], while taking into account relevant activities carried out by the [[European Commission]].<ref>{{Cite web |title=Open Science |url=https://ec.europa.eu/info/research-and-innovation/strategy/goals-research-and-innovation-policy/open-science_en |access-date=2021-02-08 |website=European Commission – European Commission |language=en}}</ref>
All services are built using [[Open-source software|open source software]] and strive towards compliance with best effort principles, such as the [[FAIR data|FAIR principles]], the [[FORCE11|FORCE11 guidelines]] and [[Plan S]], while taking into account relevant activities carried out by the [[European Commission]].<ref>{{Cite web |title=Open Science |url=https://ec.europa.eu/info/research-and-innovation/strategy/goals-research-and-innovation-policy/open-science_en |access-date=2021-02-08 |website=European Commission – European Commission |language=en}}</ref>
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CERN also provides daily tours to certain facilities such as the Synchro-cyclotron (CERNs first particle accelerator) and the superconducting magnet workshop.
CERN also provides daily tours to certain facilities such as the Synchro-cyclotron (CERNs first particle accelerator) and the superconducting magnet workshop.


In 2004, a two-metre statue of the [[Nataraja]], the dancing form of the Hindu god [[Shiva]], was unveiled at CERN. The statue, symbolizing Shiva's cosmic dance of creation and destruction, was presented by the [[Government of India|Indian government]] to celebrate the research center's long association with India.<ref>{{Cite web |url=http://cerncourier.com/cws/article/cern/29122/3 |title=Faces and Places (page 3) |website=CERN Courier |access-date=2017-01-30 |archive-url=https://web.archive.org/web/20180606115929/http://cerncourier.com/cws/article/cern/29122/3 |archive-date=6 June 2018 |url-status=dead |df=dmy-all}}</ref> A special plaque next to the statue explains the metaphor of Shiva's cosmic dance with quotations from physicist [[Fritjof Capra]]:
In 2004, a two-metre statue of the [[Nataraja]], the dancing form of the Hindu god [[Shiva]], was unveiled at CERN. The statue, symbolizing Shiva's cosmic dance of creation and destruction, was presented by the [[Government of India|Indian government]] to celebrate the research center's long association with India.<ref>{{Cite web |url=http://cerncourier.com/cws/article/cern/29122/3 |title=Faces and Places (page 3) |website=CERN Courier |access-date=2017-01-30 |archive-url=https://web.archive.org/web/20180606115929/http://cerncourier.com/cws/article/cern/29122/3 |archive-date=6 June 2018 }}</ref> A special plaque next to the statue explains the metaphor of Shiva's cosmic dance with quotations from physicist [[Fritjof Capra]]:


<blockquote>Hundreds of years ago, Indian artists created visual images of dancing Shivas in a beautiful series of bronzes. In our time, physicists have used the most advanced technology to portray the patterns of the cosmic dance. The metaphor of the cosmic dance thus unifies ancient mythology, religious art and modern physics.<ref>{{Cite web |url=http://www.fritjofcapra.net/shivas-cosmic-dance-at-cern/ |title=Shiva's Cosmic Dance at CERN {{!}} Fritjof Capra |website=fritjofcapra.net |access-date=2017-01-30}}</ref></blockquote>
<blockquote>Hundreds of years ago, Indian artists created visual images of dancing Shivas in a beautiful series of bronzes. In our time, physicists have used the most advanced technology to portray the patterns of the cosmic dance. The metaphor of the cosmic dance thus unifies ancient mythology, religious art and modern physics.<ref>{{Cite web |url=http://www.fritjofcapra.net/shivas-cosmic-dance-at-cern/ |title=Shiva's Cosmic Dance at CERN {{!}} Fritjof Capra |website=fritjofcapra.net |access-date=2017-01-30}}</ref></blockquote>
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Since 2012, Arts at CERN has fostered creative dialogue between art and physics through residencies, art commissions, exhibitions and events. Artists across all creative disciplines have been invited to CERN to experience how fundamental science pursues the big questions about our universe.
Since 2012, Arts at CERN has fostered creative dialogue between art and physics through residencies, art commissions, exhibitions and events. Artists across all creative disciplines have been invited to CERN to experience how fundamental science pursues the big questions about our universe.


Even before the arts programme officially started, several highly regarded artists visited the laboratory, drawn to physics and fundamental science. In 1972, [[James Lee Byars]] was the first artist to visit the laboratory and the only one, so far, to feature on the cover of the CERN Courier.<ref>{{Cite journal |year=1972 |title=Front cover: One of the visitors, James Lee Byars, who brought some colour into the CERN corridors during the summer. |url=https://cds.cern.ch/record/1729545 |journal=CERN Courier |volume=12 |issue=9}}</ref> [[Mariko Mori]],<ref>{{Cite web |title=Art and sub-atomic particles to collide at CERN |url=https://www.today.com/news/art-sub-atomic-particles-collide-cern-wbna44018958 |access-date=2023-04-05 |website=TODAY.com |date=4 August 2011 |language=en}}</ref> {{ill|Gianni Motti|fr|Gianni Motti}},<ref>{{Cite web |title=Gianni Motti {{!}} "HIGGS, looking for the anti-Motti", CERN, Genève (2005) {{!}} Artsy |url=https://www.artsy.net/artwork/gianni-motti-higgs-looking-for-the-anti-motti-cern-geneve-1 |access-date=2023-04-05 |website=www.artsy.net |language=en}}</ref> [[Cerith Wyn Evans]],<ref>{{Cite book |last=Wyn Evans |first=Cerith |url=https://www.worldcat.org/oclc/876051101 |title=Cerith Wyn Evans : the what if? ... scenario (after LG) |date=2013 |publisher=Sternberg Press |others=Eva Wilson, Daniela Zyman, Thyssen-Bornemisza Art Contemporary |isbn=978-3-943365-88-7 |location=Berlin |oclc=876051101}}</ref> [[John Berger]]<ref>{{Cite journal |last=White |first=Jerry |date=2017 |title=John Berger of the Haute-Savoie |url=https://www.jstor.org/stable/26413815 |journal=Film Quarterly |volume=70 |issue=4 |pages=93–98 |doi=10.1525/fq.2017.70.4.93 |jstor=26413815 |issn=0015-1386|url-access=subscription }}</ref> and [[Anselm Kiefer]]<ref>{{Cite web |title=Anselm Kiefer Meets Science At Cern's Monumental Hadron Collider |url=https://artlyst.com/news/anselm-kiefer-meets-science-at-cerns-monumental-hadron-collider/ |access-date=2023-04-06 |website=Artlyst |language=en-GB}}</ref> are among the artists who came to CERN in the years that followed.
Even before the arts programme officially started, several highly regarded artists visited the laboratory, drawn to physics and fundamental science. In 1972, [[James Lee Byars]] was the first artist to visit the laboratory and the only one, so far, to feature on the cover of the CERN Courier.<ref>{{Cite journal |year=1972 |title=Front cover: One of the visitors, James Lee Byars, who brought some colour into the CERN corridors during the summer. |url=https://cds.cern.ch/record/1729545 |journal=CERN Courier |volume=12 |issue=9}}</ref> [[Mariko Mori]],<ref>{{Cite web |title=Art and sub-atomic particles to collide at CERN |url=https://www.today.com/news/art-sub-atomic-particles-collide-cern-wbna44018958 |access-date=2023-04-05 |website=TODAY.com |date=4 August 2011 |language=en}}</ref> {{ill|Gianni Motti|fr|Gianni Motti}},<ref>{{Cite web |title=Gianni Motti {{!}} "HIGGS, looking for the anti-Motti", CERN, Genève (2005) {{!}} Artsy |url=https://www.artsy.net/artwork/gianni-motti-higgs-looking-for-the-anti-motti-cern-geneve-1 |access-date=2023-04-05 |website=www.artsy.net |language=en |archive-date=6 April 2023 |archive-url=https://web.archive.org/web/20230406001556/https://www.artsy.net/artwork/gianni-motti-higgs-looking-for-the-anti-motti-cern-geneve-1 }}</ref> [[Cerith Wyn Evans]],<ref>{{Cite book |last=Wyn Evans |first=Cerith |title=Cerith Wyn Evans: the what if? ... scenario (after LG) |date=2013 |publisher=Sternberg Press |others=Eva Wilson, Daniela Zyman, Thyssen-Bornemisza Art Contemporary |isbn=978-3-943365-88-7 |location=Berlin |oclc=876051101}}</ref> [[John Berger]]<ref>{{Cite journal |last=White |first=Jerry |date=2017 |title=John Berger of the Haute-Savoie |journal=Film Quarterly |volume=70 |issue=4 |pages=93–98 |doi=10.1525/fq.2017.70.4.93 |jstor=26413815 |issn=0015-1386}}</ref> and [[Anselm Kiefer]]<ref>{{Cite web |title=Anselm Kiefer Meets Science At Cern's Monumental Hadron Collider |url=https://artlyst.com/news/anselm-kiefer-meets-science-at-cerns-monumental-hadron-collider/ |access-date=2023-04-06 |website=Artlyst |language=en-GB}}</ref> are among the artists who came to CERN in the years that followed.


The programmes of Arts at CERN are structured according to their values and vision to create bridges between cultures. Each programme is designed and formed in collaboration with cultural institutions, other partner laboratories, countries, cities and artistic communities eager to connect with CERN's research, support their activities, and contribute to a global network of art and science.
The programmes of Arts at CERN are structured according to their values and vision to create bridges between cultures. Each programme is designed and formed in collaboration with cultural institutions, other partner laboratories, countries, cities and artistic communities eager to connect with CERN's research, support their activities, and contribute to a global network of art and science.
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[[File:CERN Tram, line number 18.jpg|thumb|Geneva tram 18 at CERN]]
[[File:CERN Tram, line number 18.jpg|thumb|Geneva tram 18 at CERN]]
* The band [[Les Horribles Cernettes]] was founded by women from CERN. The name was chosen so to have the same initials as the LHC.<ref name="CernettesNYT">{{cite news |author=Brown |first=Malcolm W. |date=29 December 1998 |title=Physicists Discover Another Unifying Force: Doo-Wop |work=[[The New York Times]] |url=https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/NYT.pdf |url-status=live |access-date=21 September 2010 |archive-url=https://ghostarchive.org/archive/20221009/https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/NYT.pdf |archive-date=2022-10-09}}</ref><ref name="CernettesWired">{{cite news |author=McCabe |first=Heather |date=10 February 1999 |title=Grrl Geeks Rock Out |work=[[Wired News]] |url=https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/Wired.pdf |url-status=live |access-date=21 September 2010 |archive-url=https://ghostarchive.org/archive/20221009/https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/Wired.pdf |archive-date=2022-10-09}}</ref>
* The band [[Les Horribles Cernettes]] was founded by women from CERN. The name was chosen so to have the same initials as the LHC.<ref name="CernettesNYT">{{cite news |author=Brown |first=Malcolm W. |date=29 December 1998 |title=Physicists Discover Another Unifying Force: Doo-Wop |work=[[The New York Times]] |url=https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/NYT.pdf |url-status=live |access-date=21 September 2010 |archive-url=https://ghostarchive.org/archive/20221009/https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/NYT.pdf |archive-date=2022-10-09}}</ref><ref name="CernettesWired">{{cite news |author=McCabe |first=Heather |date=10 February 1999 |title=Grrl Geeks Rock Out |work=[[Wired News]] |url=https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/Wired.pdf |url-status=live |access-date=21 September 2010 |archive-url=https://ghostarchive.org/archive/20221009/https://musiclub.web.cern.ch/MusiClub/bands/cernettes/Press/Wired.pdf |archive-date=2022-10-09}}</ref>
* The science journalist [[Katherine McAlpine]] made a [[Hip hop music|rap]] video called "Large Hadron Rap" about CERN's Large Hadron Collider with some of the facility's staff.<ref>{{cite web|url=https://www.youtube.com/watch?v=j50ZssEojtM |title=Large Hadron Rap |via=YouTube |access-date=20 November 2010}}</ref><ref>{{Cite web |title=National Geographic |url=https://www.nationalgeographic.com/ |access-date=2023-09-28 |website=National Geographic |language=en}}</ref>
* The science journalist [[Katherine McAlpine]] made a [[Hip hop music|rap]] video called "Large Hadron Rap" about CERN's Large Hadron Collider with some of the facility's staff.<ref>{{cite web|url=https://www.youtube.com/watch?v=j50ZssEojtM |title=Large Hadron Rap |date=28 July 2008 |via=YouTube |access-date=20 November 2010}}</ref><ref>{{Cite web |title=National Geographic |url=https://www.nationalgeographic.com/ |access-date=2023-09-28 |website=National Geographic |language=en}}</ref>
* ''[[Particle Fever]]'', a 2013 documentary, explores CERN throughout the inside and depicts the events surrounding the 2012 discovery of the [[Higgs Boson]].
* ''[[Particle Fever]]'', a 2013 documentary, explores CERN throughout the inside and depicts the events surrounding the 2012 discovery of the [[Higgs Boson]].
* [[John Titor]], a self-proclaimed [[time travel]]er, alleged that CERN would invent time travel in 2001.
* [[John Titor]], a self-proclaimed [[time travel]]er, alleged that CERN would invent time travel in 2001.<ref>{{Cite news |title=John Titor |url=https://timetravelinstitute.com/enigmas/john-titor.1/ |archive-url=https://web.archive.org/web/20231217231646/https://timetravelinstitute.com/enigmas/john-titor.1/ |archive-date=2023-12-17 |access-date=2025-11-19 |work=Time Travel Institute |language=en-US}}</ref>
* CERN is depicted in the [[visual novel]]/[[anime]] series ''[[Steins;Gate]]'' as SERN, a shadowy organization that has been researching time travel in order to restructure and control the world.
* In [[Robert J. Sawyer]]'s 1999 science fiction novel ''[[Flashforward (novel)|Flashforward]]'', as CERN's Large Hadron Collider accelerator is performing a run to search for the Higgs boson the entire human race sees themselves twenty-one years and six months in the future.
* In [[Robert J. Sawyer]]'s 1999 science fiction novel ''[[Flashforward (novel)|Flashforward]]'', as CERN's Large Hadron Collider accelerator is performing a run to search for the Higgs boson the entire human race sees themselves twenty-one years and six months in the future.
* A number of [[Conspiracy theory|conspiracy theories]] feature CERN, accusing the organization of partaking in [[CERN ritual hoax|occult rituals]] and secret experiments involving opening [[wormhole|portals]] into [[Hell]] or other [[dimension]]s, shifting the world into an [[Alternative history|alternative timeline]] and [[List of conspiracy theories#Weather and earthquake control projects|causing earthquakes]].<ref>{{Cite web|url=https://www.theguardian.com/science/2016/aug/18/fake-human-sacrifice-filmed-at-cern-with-pranking-scientists-suspected|title=Fake human sacrifice filmed at Cern, with pranking scientists suspected|author=Staff and agencies in Geneva|date=2016-08-17|work=[[The Guardian]]|accessdate=2023-02-19}}</ref><ref>{{cite web|first=Diana|last=Brown|title=Why Conspiracy Theorists Are Obsessed With CERN|date=13 February 2018 |url=https://science.howstuffworks.com/science-vs-myth/everyday-myths/why-conspiracy-theorists-are-obsessed-with-cern.htm|publisher=[[HowStuffWorks]]|accessdate=2023-02-19}}</ref>
* A number of [[Conspiracy theory|conspiracy theories]] feature CERN, accusing the organization of partaking in [[CERN ritual hoax|occult rituals]] and secret experiments involving opening [[wormhole|portals]] into [[Hell]] or other [[dimension]]s, shifting the world into an [[Alternative history|alternative timeline]] and [[List of conspiracy theories#Weather and earthquake control projects|causing earthquakes]].<ref>{{Cite web|url=https://www.theguardian.com/science/2016/aug/18/fake-human-sacrifice-filmed-at-cern-with-pranking-scientists-suspected|title=Fake human sacrifice filmed at Cern, with pranking scientists suspected|author=Staff and agencies in Geneva|date=2016-08-17|work=[[The Guardian]]|access-date=2023-02-19}}</ref><ref>{{cite web|first=Diana|last=Brown|title=Why Conspiracy Theorists Are Obsessed With CERN|date=13 February 2018 |url=https://science.howstuffworks.com/science-vs-myth/everyday-myths/why-conspiracy-theorists-are-obsessed-with-cern.htm|publisher=[[HowStuffWorks]]|access-date=2023-02-19}}</ref>
* In [[Dan Brown]]'s 2000 mystery-thriller novel ''[[Angels & Demons]]'' and 2009 film [[Angels & Demons (film)|of the same name]], a canister of antimatter is stolen from CERN.<ref>{{cite web|url=https://angelsanddemons.web.cern.ch/|title=Angels and Demons – the science behind the story|publisher=CERN|access-date=29 July 2017}}</ref>
* In [[Dan Brown]]'s 2000 mystery-thriller novel ''[[Angels & Demons]]'' and 2009 film [[Angels & Demons (film)|of the same name]], a canister of antimatter is stolen from CERN.<ref>{{cite web|url=https://angelsanddemons.web.cern.ch/|title=Angels and Demons – the science behind the story|publisher=CERN|access-date=29 July 2017}}</ref>
* CERN is depicted in a 2009 episode of ''[[South Park]]'' (Season 13, Episode 6), "[[Pinewood Derby (South Park)|Pinewood Derby]]". Randy Marsh, the father of one of the main characters, breaks into the "Hadron Particle Super Collider in Switzerland" and steals a "superconducting bending magnet created for use in tests with particle acceleration" to use in his son Stan's Pinewood Derby racer.<ref>{{cite web|url=https://southpark.cc.com/episodes/oki0th/south-park-pinewood-derby-season-13-ep-6 |title=Southparkstudios.com |date=15 April 2009 |publisher=South Park Studios |access-date=25 May 2011}}</ref>
* CERN is depicted in a 2009 episode of ''[[South Park]]'' (Season 13, Episode 6), "[[Pinewood Derby (South Park)|Pinewood Derby]]". Randy Marsh, the father of one of the main characters, breaks into the "Hadron Particle Super Collider in Switzerland" and steals a "superconducting bending magnet created for use in tests with particle acceleration" to use in his son Stan's Pinewood Derby racer.<ref>{{cite web|url=https://southpark.cc.com/episodes/oki0th/south-park-pinewood-derby-season-13-ep-6 |title=Southparkstudios.com |date=15 April 2009 |publisher=South Park Studios |access-date=25 May 2011}}</ref>
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* [[CERN openlab]]
* [[CERN openlab]]
* [[Scientific Linux]], CERN operating system
* [[Scientific Linux]], CERN operating system
* [[List of directors general of CERN]]


'''International:'''
'''International:'''

Latest revision as of 03:29, 20 November 2025

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The European Organization for Nuclear Research, known as CERN (Template:IPAc-en; Script error: No such module "IPA".; Script error: No such module "Lang".), is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, a western suburb of Geneva, on the France–Switzerland border. It comprises 24 member states.[1] Israel, admitted in 2013, is the only full member geographically out of Europe.[2][3] CERN is an official United Nations General Assembly observer.[4]

The acronym CERN is also used to refer to the laboratory; in 2024, it had Template:Val scientific, technical, and administrative staff members, and hosted about Template:Val users from institutions in more than 80 countries.[5] In 2016, CERN generated 49 petabytes of data.[6]

CERN's main function is to provide the particle accelerators and other infrastructure needed for high-energy physics research – consequently, numerous experiments have been constructed at CERN through international collaborations. CERN is the site of the Large Hadron Collider (LHC), the world's largest and highest-energy particle collider.[7] The main site at Meyrin hosts a large computing facility, which is primarily used to store and analyze data from experiments, as well as simulate events. As researchers require remote access to these facilities, the lab has historically been a major wide area network hub. CERN is also the birthplace of the World Wide Web.[8][9]

History

The convention establishing CERN[10] was ratified on 29 September 1954 by 12 countries in Western Europe.[11] The acronym CERN originally represented the French words for Script error: No such module "Lang". ('European Council for Nuclear Research'), which was a provisional council for building the laboratory, established by 12 European governments in 1952. During these early years, the council worked at the University of Copenhagen under the direction of Niels Bohr before moving to its present site near Geneva.[12][13]

The acronym was retained for the new laboratory after the provisional council was dissolved, even though the name changed to the current Script error: No such module "Lang". ('European Organization for Nuclear Research') in 1954.[14][15] According to Lew Kowarski, a former director of CERN, when the name was changed, the abbreviation could have become the awkward OERN,[16] and Werner Heisenberg said that this could "still be CERN even if the name is [not]".[17]

CERN's first president was Sir Benjamin Lockspeiser. Edoardo Amaldi was the general secretary of CERN at its early stages when operations were still provisional, and the first Director-General (1954) was Felix Bloch.[18]

The laboratory was originally devoted to the study of atomic nuclei, but was soon applied to higher-energy physics, concerned mainly with the study of interactions between subatomic particles. Therefore, the laboratory operated by CERN is commonly referred to as the European laboratory for particle physics (Script error: No such module "Lang".), which better describes the research being performed there.Script error: No such module "Unsubst".

Founding members

File:Cernfounders.png
The 12 founding member states of CERN in 1954[19]

At the sixth session of the CERN Council in Paris from 29 June to 1 July 1953, the convention establishing the organization was signed, subject to ratification, by 12 states. The convention was gradually ratified by the 12 founding Member States: Belgium, Denmark, France, the Federal Republic of Germany, Greece, Italy, the Netherlands, Norway, Sweden, Switzerland, the United Kingdom, and Yugoslavia.[20]

Scientific achievements

Several major achievements in particle physics have occurred in experiments at CERN. They include:

In September 2011, CERN attracted media attention when the OPERA Collaboration reported the detection of possibly faster-than-light neutrinos.[36] Further tests showed that the results were flawed due to an incorrectly connected GPS synchronization cable.[37]

The 1984 Nobel Prize for Physics was awarded to Carlo Rubbia and Simon van der Meer for the developments that resulted in the discoveries of the W and Z bosons.[38] The 1992 Nobel Prize for Physics was awarded to CERN staff researcher Georges Charpak "for his invention and development of particle detectors, in particular the multiwire proportional chamber". The 2013 Nobel Prize for Physics was awarded to François Englert and Peter Higgs for the theoretical description of the Higgs mechanism in the year after the Higgs boson was found by CERN experiments.

Computer science

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CERN pioneered the introduction of TCP/IP for its intranet, beginning in 1984. This played an influential role in the adoption of the TCP/IP in Europe (see History of the Internet and Protocol Wars).[39]

In 1989, the World Wide Web was invented at CERN by Tim Berners-Lee. Based on the concept of hypertext, the idea was designed to facilitate information sharing between researchers.[40][41] This stemmed from Berners-Lee's earlier work at CERN on a database named ENQUIRE. A colleague, Robert Cailliau, became involved in 1990.[42][43][44]

In 1995, Berners-Lee and Cailliau were jointly honoured by the Association for Computing Machinery for their contributions to the development of the World Wide Web.[45] A copy of the first webpage, created by Berners-Lee, is still published on the World Wide Web Consortium's website as a historical document.[46] The first website was activated in 1991. On 30 April 1993, CERN announced that the World Wide Web would be free to anyone.[47] It became the dominant way through which most users interact with the Internet.[48][49]

More recently, CERN has become a facility for the development of grid computing, hosting projects including the Enabling Grids for E-sciencE (EGEE) and LHC Computing Grid. It also hosts the CERN Internet Exchange Point (CIXP), one of the two main internet exchange points in Switzerland. Template:As of, CERN employs ten times more engineers and technicians than research physicists.[50]

Particle accelerators

Current complex

Template:CERNaccelerators

File:Location Large Hadron Collider.PNG
A map of the Large Hadron Collider together with the Super Proton Synchrotron at CERN

CERN operates a network of seven accelerators and two decelerators, and some additional small accelerators. Each machine in the chain increases the energy of particle beams before delivering them to experiments or to the next more powerful accelerator. The decelerators naturally decrease the energy of particle beams before delivering them to experiments or further accelerators/decelerators. Before an experiment is able to use the network of accelerators, it must be approved by the various Scientific Committees of CERN.[51] Currently (as of 2022) active machines are the LHC accelerator and:

Large Hadron Collider

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Many activities at CERN currently involve operating the Large Hadron Collider (LHC) and the experiments for it. The LHC represents a large-scale, worldwide scientific cooperation project.[68]

File:View inside detector at the CMS cavern LHC CERN.jpg
CMS detector for LHC

The LHC tunnel is located 100 metres underground, in the region between Geneva International Airport and the nearby Jura mountains. The majority of its length is on the French side of the border. It uses the 27 km circumference circular tunnel previously occupied by the Large Electron–Positron Collider (LEP), which was shut down in November 2000. CERN's existing PS/SPS accelerator complexes are used to pre-accelerate protons and lead ions which are then injected into the LHC.

Eight experiments (CMS,[69] ATLAS,[70] LHCb,[71] MoEDAL,[72] TOTEM,[73] LHCf,[74] FASER[75] and ALICE[76]) are located along the collider; each of them studies particle collisions from a different aspect, and with different technologies. Construction for these experiments required an extraordinary engineering effort. For example, a special crane was rented from Belgium to lower pieces of the CMS detector into its cavern, since each piece weighed nearly Template:Val tons. The first of the approximately Template:Val magnets necessary for construction was lowered down a special shaft at in March 2005.

The LHC has begun to generate vast quantities of data, which CERN streams to laboratories around the world for distributed processing, making use of a specialized grid infrastructure, the LHC Computing Grid. In April 2005, a trial successfully streamed 600 MB/s to seven different sites across the world.

In August 2008, the initial particle beams were injected into the LHC.[77] The first beam was circulated through the entire LHC on 10 September 2008,[78] but the system failed 10 days later because of a faulty magnet connection, and it was stopped for repairs on 19 September 2008.

The LHC resumed operation on 20 November 2009 by successfully circulating two beams, each with an energy of 3.5 teraelectronvolts (TeV). The challenge for the engineers was then to line up the two beams so that they smashed into each other. This is like "firing two needles across the Atlantic and getting them to hit each other" according to Stephen Myers, director for accelerators and technology.

On 30 March 2010, the LHC successfully collided two proton beams with 3.5 TeV of energy per proton, resulting in a 7 TeV collision energy. This was enough to start the main research program, including the search for the Higgs boson. When the 7 TeV experimental period ended, the LHC increased to 8 TeV (4 TeV per proton) starting March 2012, and soon began particle collisions at that energy. In July 2012, CERN scientists announced the discovery of a new sub-atomic particle that was later confirmed to be the Higgs boson.[79]

In March 2013, CERN announced that the measurements performed on the newly found particle allowed it to conclude that it was a Higgs boson.[80] In early 2013, the LHC was deactivated for a two-year maintenance period, to strengthen the electrical connections between magnets inside the accelerator and for other upgrades.

On 5 April 2015, after two years of maintenance and consolidation, the LHC restarted for a second run. The first ramp to the record-breaking energy of 6.5 TeV was performed on 10 April 2015.[81][82] In 2016, the design collision rate was exceeded for the first time.[83] A second two-year period of shutdown begun at the end of 2018.[84][85]

Accelerators under construction

As of October 2019, the construction is on-going to upgrade the LHC's luminosity in a project called High Luminosity LHC (HL–LHC). This project should see the LHC accelerator upgraded by 2026 to an order of magnitude higher luminosity.[86]

As part of the HL–LHC upgrade project, also other CERN accelerators and their subsystems are receiving upgrades. Among other work, the LINAC 2 linear accelerator injector was decommissioned and replaced by a new injector accelerator, the LINAC4.[87]

Decommissioned accelerators

Possible future accelerators

Script error: No such module "Labelled list hatnote".CERN, in collaboration with groups worldwide, is investigating two main concepts for future accelerators: A linear electron-positron collider with a new acceleration concept to increase the energy (CLIC) and a larger version of the LHC, a project currently named Future Circular Collider.[104]

Sites

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File:CERN Building 40 (1).jpg
CERN building 40 at the Meyrin site
File:Bldng40cropped.jpg
The interior of office building 40 at the Meyrin site. Building 40 hosts many offices for scientists from the CMS and ATLAS collaborations.

The smaller accelerators are on the main Meyrin site, also known as the West Area, which was originally built in Switzerland alongside the French border, but has been extended to span the border since 1965. The French side is under Swiss jurisdiction and there is no obvious border within the site, apart from a line of marker stones.

The SPS and LEP/LHC tunnels are almost entirely outside the main site, and are mostly buried under French farmland and invisible from the surface. They have surface sites at points around them, either as the location of buildings associated with experiments or other facilities needed to operate the colliders such as cryogenic plants and access shafts. The experiments are located at the same underground level as the tunnels at these sites.

Three of these experimental sites are in France, with ATLAS in Switzerland, and some of the ancillary cryogenic and access sites are in Switzerland. The largest of the experimental sites is the Prévessin site, also known as the North Area, which is the target station for non-collider experiments on the SPS accelerator. Other sites are the ones which were used for the UA1, UA2 and the LEP experiments. The latter are used by LHC experiments.

Outside of the LEP and LHC experiments, most are officially named and numbered after the site where they were located. For example, NA32 was an experiment looking at the production of so-called "charmed" particles and located at the Prévessin (North Area) site. WA22 used the Big European Bubble Chamber (BEBC) at the Meyrin (West Area) site to examine neutrino interactions. The UA1 and UA2 experiments were considered to be in the Underground Area, i.e. situated underground at sites on the SPS accelerator.

Most of the roads on the CERN Meyrin and Prévessin sites are named after famous physicists, such as Wolfgang Pauli, who pushed for CERN's creation. Other notable names are Richard Feynman, Albert Einstein, and Bohr.

Participation and funding

Member states and budget

Since its foundation by 12 members in 1954, CERN regularly accepted new members. All new members have remained in the organization continuously since their accession, except Spain and Yugoslavia. Spain first joined CERN in 1961, withdrew in 1969, and rejoined in 1983. Yugoslavia was a founding member of CERN but quit in 1961. Of the 24 members, Israel joined CERN as a full member in January 2014,[105] becoming the first, and currently only, non-geographically European full member.[106]

The budget contributions of member states are computed based on their GDP.[107]

Member state Status since Contribution
(million CHF for 2025)
Contribution
(fraction of total for 2025)
Contribution per capitaTemplate:Refn
(CHF/person for 2017)
Founding MembersTemplate:Refn
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Associate Members in the pre-stage to membership
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Associate Members
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Template:Reflist

Enlargement

Associate Members, Candidates:

  • Turkey signed an association agreement on 12 May 2014[127] and became an associate member on 6 May 2015.
  • Pakistan signed an association agreement on 19 December 2014[128] and became an associate member on 31 July 2015.[129][130]
  • Cyprus signed an association agreement on 5 October 2012 and became an associate member in the pre-stage to membership on 1 April 2016.[115]
  • Ukraine signed an association agreement on 3 October 2013. The agreement was ratified on 5 October 2016.[118]
  • India signed an association agreement on 21 November 2016.[131] The agreement was ratified on 16 January 2017.[119]
  • Slovenia was approved for admission as an Associate Member state in the pre-stage to membership on 16 December 2016.[132] The agreement was ratified on 4 July 2017.[133]
  • Lithuania was approved for admission as an Associate Member state on 16 June 2017. The association agreement was signed on 27 June 2017 and ratified on 8 January 2018.[134][120]
  • Croatia was approved for admission as an Associate Member state on 28 February 2019. The agreement was ratified on 10 October 2019.[121]
  • Latvia and CERN signed an associate membership agreement on 14 April 2021.[135] Latvia was formally admitted as an Associate Member on 2 August 2021.[122]
  • Brazil became the first associate member of the Americas on 13 March 2024, after signing the associate membership agreement in March 2022.[123]
  • Chile and Ireland were approved as new Associate Member States, subject to completion of the necessary accession and ratification processes in the countries on March 2025.[136]

International relations

Three countries have observer status:[137]

  • Japan – since 1995
  • Russia – since 1993 (suspended as of March 2022)[138]
  • United States – since 1997

Also observers are the following international organizations:

Non-Member States (with dates of Co-operation Agreements) currently involved in CERN programmes are:[140][141]

Template:Columns-list

CERN also has scientific contacts with the following other countries and regions:[140][142]

Template:Columns-list

International research institutions, such as CERN, can aid in science diplomacy.[143]

Associated institutions

File:ESO and CERN sign cooperation agreement.jpg
ESO and CERN have a cooperation agreement.[144]

A large number of institutes around the world are associated to CERN through current collaboration agreements and/or historical links.[145] The list below contains organizations represented as observers to the CERN Council, organizations to which CERN is an observer and organizations based on the CERN model:

.cern

Template:Infobox Top level domain

.cern is a top-level domain for CERN.[154][155] It was registered on 13 August 2014.[156][157] On 20 October 2015, CERN moved its main website to https://home.cern.[158][159]

Open science

The Open Science movement focuses on making scientific research openly accessible and on creating knowledge through open tools and processes. Open access, open data, open source software and hardware, open licenses, digital preservation and reproducible research are primary components of open science and areas in which CERN has been working towards since its formation.

CERN has developed policies and official documents that enable and promote open science, starting with CERN's founding convention in 1953 which indicated that all its results are to be published or made generally available.[10] Since then, CERN published its open access policy in 2014,[160] which ensures that all publications by CERN authors will be published with gold open access and most recently an open data policy that was endorsed by the four main LHC collaborations (ALICE, ATLAS, CMS and LHCb).[161]

The open data policy complements the open access policy, addressing the public release of scientific data collected by LHC experiments after a suitable embargo period. Prior to this open data policy, guidelines for data preservation, access and reuse were implemented by each collaboration individually through their own policies which are updated when necessary.[162][163][164][165]

The European Strategy for Particle Physics, a document mandated by the CERN Council that forms the cornerstone of Europe's decision-making for the future of particle physics, was last updated in 2020 and affirmed the organisation's role within the open science landscape by stating: "The particle physics community should work with the relevant authorities to help shape the emerging consensus on open science to be adopted for publicly-funded research, and should then implement a policy of open science for the field".[166]

Beyond the policy level, CERN has established a variety of services and tools to enable and guide open science at CERN, and in particle physics more generally. On the publishing side, CERN has initiated and operates a global cooperative project, the Sponsoring Consortium for Open Access Publishing in Particle Physics, SCOAP3, to convert scientific articles in high-energy physics to open access. In 2018, the SCOAP3 partnership represented 3,000+ libraries from 44 countries and 3 intergovernmental organizations who have worked collectively to convert research articles in high-energy physics across 11 leading journals in the discipline to open access.[167][168]

Public-facing results can be served by various CERN-based services depending on their use case: the CERN Open Data portal,[169] Zenodo, the CERN Document Server,[170] INSPIRE and HEPData[171] are the core services used by the researchers and community at CERN, as well as the wider high-energy physics community for the publication of their documents, data, software, multimedia, etc. CERN's efforts towards preservation and reproducible research are best represented by a suite of services addressing the entire physics analysis lifecycle, such as data, software and computing environment. CERN Analysis Preservation[172] helps researchers to preserve and document the various components of their physics analyses. REANA (Reusable Analyses)[173] enables the instantiating of preserved research data analyses on the cloud.

All services are built using open source software and strive towards compliance with best effort principles, such as the FAIR principles, the FORCE11 guidelines and Plan S, while taking into account relevant activities carried out by the European Commission.[174]

Public exhibits

File:CERN Globe of Science and Innovation.jpg
The Globe of Science and Innovation at CERN

The CERN Science Gateway, opened in October 2023,[175] is CERN's latest facility for science outreach and education. It is home to a range of immersive exhibits, workshops, and shows.

The Globe of Science and Innovation, which opened in late 2005, is open to the public. It is used four times a week for special exhibits.

The Microcosm museum previously hosted another on-site exhibition on particle physics and CERN history. It closed permanently on 18 September 2022, in preparation for the installation of the exhibitions in Science Gateway.[176]

CERN also provides daily tours to certain facilities such as the Synchro-cyclotron (CERNs first particle accelerator) and the superconducting magnet workshop.

In 2004, a two-metre statue of the Nataraja, the dancing form of the Hindu god Shiva, was unveiled at CERN. The statue, symbolizing Shiva's cosmic dance of creation and destruction, was presented by the Indian government to celebrate the research center's long association with India.[177] A special plaque next to the statue explains the metaphor of Shiva's cosmic dance with quotations from physicist Fritjof Capra:

Hundreds of years ago, Indian artists created visual images of dancing Shivas in a beautiful series of bronzes. In our time, physicists have used the most advanced technology to portray the patterns of the cosmic dance. The metaphor of the cosmic dance thus unifies ancient mythology, religious art and modern physics.[178]

Arts at CERN

CERN launched its Cultural Policy for engaging with the arts in 2011.[179][180] The initiative provided the essential framework and foundations for establishing Arts at CERN, the arts programme of the Laboratory.

Since 2012, Arts at CERN has fostered creative dialogue between art and physics through residencies, art commissions, exhibitions and events. Artists across all creative disciplines have been invited to CERN to experience how fundamental science pursues the big questions about our universe.

Even before the arts programme officially started, several highly regarded artists visited the laboratory, drawn to physics and fundamental science. In 1972, James Lee Byars was the first artist to visit the laboratory and the only one, so far, to feature on the cover of the CERN Courier.[181] Mariko Mori,[182] Template:Ill,[183] Cerith Wyn Evans,[184] John Berger[185] and Anselm Kiefer[186] are among the artists who came to CERN in the years that followed.

The programmes of Arts at CERN are structured according to their values and vision to create bridges between cultures. Each programme is designed and formed in collaboration with cultural institutions, other partner laboratories, countries, cities and artistic communities eager to connect with CERN's research, support their activities, and contribute to a global network of art and science.

They comprise research-led artistic residencies that take place on-site or remotely. More than 200 artists from 80 countries have participated in the residencies to expand their creative practices at the Laboratory, benefiting from the involvement of 400 physicists, engineers and CERN staff. Between 500 and 800 applications are received every year. The programmes comprise Collide, the international residency programme organised in partnership with a city; Connect, a programme of residencies to foster experimentation in art and science at CERN and in scientific organisations worldwide in collaboration with Pro Helvetia, and Guest Artists, a short stay for artists to stay to engage with CERN's research and community.[187][188]

In popular culture

File:Shiva's statue at CERN engaging in the Nataraja dance.jpg
The statue of Shiva engaging in the Nataraja dance (symbolising his cosmic dance of creation and destruction) presented by the Department of Atomic Energy of India
File:CERN Tram, line number 18.jpg
Geneva tram 18 at CERN
  • The band Les Horribles Cernettes was founded by women from CERN. The name was chosen so to have the same initials as the LHC.[189][190]
  • The science journalist Katherine McAlpine made a rap video called "Large Hadron Rap" about CERN's Large Hadron Collider with some of the facility's staff.[191][192]
  • Particle Fever, a 2013 documentary, explores CERN throughout the inside and depicts the events surrounding the 2012 discovery of the Higgs Boson.
  • John Titor, a self-proclaimed time traveler, alleged that CERN would invent time travel in 2001.[193]
  • In Robert J. Sawyer's 1999 science fiction novel Flashforward, as CERN's Large Hadron Collider accelerator is performing a run to search for the Higgs boson the entire human race sees themselves twenty-one years and six months in the future.
  • A number of conspiracy theories feature CERN, accusing the organization of partaking in occult rituals and secret experiments involving opening portals into Hell or other dimensions, shifting the world into an alternative timeline and causing earthquakes.[194][195]
  • In Dan Brown's 2000 mystery-thriller novel Angels & Demons and 2009 film of the same name, a canister of antimatter is stolen from CERN.[196]
  • CERN is depicted in a 2009 episode of South Park (Season 13, Episode 6), "Pinewood Derby". Randy Marsh, the father of one of the main characters, breaks into the "Hadron Particle Super Collider in Switzerland" and steals a "superconducting bending magnet created for use in tests with particle acceleration" to use in his son Stan's Pinewood Derby racer.[197]
  • In the 2010 season 3 episode 15 of the TV situation comedy The Big Bang Theory, "The Large Hadron Collision", Leonard and Raj travel to CERN to attend a conference and see the LHC.
  • The 2012 student film Decay, which centres on the idea of the Large Hadron Collider transforming people into zombies, was filmed on location in CERN's maintenance tunnels.[198]
  • The Compact Muon Solenoid at CERN was used as the basis for the Megadeth's Super Collider album cover.
  • CERN forms part of the back story of the massively multiplayer augmented reality game Ingress,[199] and in the 2018 Japanese anime television series Ingress: The Animation, based on Niantic's augmented reality mobile game of the same name.
  • In 2015, Sarah Charley, US communications manager for LHC experiments at CERN with graduate students Jesse Heilman of the University of California, Riverside, and Tom Perry and Laser Seymour Kaplan of the University of Wisconsin, Madison created a parody video based on "Collide", a song by American artist Howie Day.[200] The lyrics were changed to be from the perspective of a proton in the Large Hadron Collider. After seeing the parody, Day re-recorded the song with the new lyrics, and released a new version of "Collide" in February 2017 with a video created during his visit to CERN.[201]
  • In 2015, Ryoji Ikeda created an art installation called "Supersymmetry" based on his experience as a resident artist at CERN.[202]
  • In the 2017 season 10 episode 6 of the British science fiction Doctor Who, "Extremis", CERN is one of several locations found to be connected by a hub of mysterious portals.
  • The television series Mr. Robot features a secretive, underground project apparatus that resembles the ATLAS experiment.
  • Parallels, a Disney+ television series released in March 2022, includes a particle-physics laboratory at the French-Swiss border called "ERN". Various accelerators and facilities at CERN are referenced during the show, including ATLAS, CMS, the Antiproton Decelerator, and the FCC.[203][204][205]

See also


International:

General:

References

Template:Reflist

External links

Template:Sister project

Archival collections

Template:CERN Template:Research institutes in Switzerland Template:Prince of Asturias Award for Technical and Scientific Research Template:Authority control

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