https://wiki.cern.ch/index.php?action=history&feed=atom&title=Large_Electron-Positron_Collider
Large Electron-Positron Collider - Revision history
2026-05-26T07:06:05Z
Revision history for this page on the wiki
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https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=12421&oldid=prev
Vigen at 13:12, 24 April 2026
2026-04-24T13:12:47Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=12203&oldid=prev
Vigen at 15:52, 22 April 2026
2026-04-22T15:52:34Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Design ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Design ==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The original feasibility study was published in 1976.<ref>Physics with very high-energy e+e− colliding beams, CERN-76-18, [http://dx.doi.org/10.5170/CERN-1976-018 doi:10.5170/CERN-1976-018].</ref> The LEP designs, as the project evolved, were subsequently presented in the so-called [[Blue book|Blue]], [[Pink book|Pink]] and [[Green book|Green books]].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The original feasibility study was published in 1976.<ref>Physics with very high-energy e+e− colliding beams, CERN-76-18, [http://dx.doi.org/10.5170/CERN-1976-018 doi:10.5170/CERN-1976-018].</ref> The LEP designs, as the project evolved, were subsequently presented in the so-called [[Blue book|Blue]], [[Pink book|Pink]] and [[Green book|Green books]].</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== LEP2 ==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The LEP2 programme was launched in August 1989, immediately after the running-in of LEP at 46 GeV per beam. Following the successful research and development programme on superconducting (SC) accelerating cavities which began in 1979, the initial LEP2 programme foresaw the installation of 192 SC cavities in addition to the original 128 ambient-temperature copper accelerating cavities. The aim was to achieve an operational beam energy of 87 GeV, with an expected peak luminosity of about 4 × 10³¹ cm⁻² s⁻¹. In order to fully exploit the physics potential of LEP, and thanks to the steady improvement both in our understanding of the machine and in machine performance, the scope of the LEP2 programme was progressively widened to enable an increase in operational energy from 87 GeV in 1996 to 96 GeV by 1998—with an expected maximum peak luminosity of about 1.4 × 10³² cm⁻² s⁻¹.<ref>LEP design report, v.3 : LEP2 , Geneva : CERN, 1996, http://dx.doi.org/10.17181/CERN.HAIW.7L49.</ref></ins></div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Project leaders ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Project leaders ==</div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=12103&oldid=prev
Vigen at 15:07, 21 April 2026
2026-04-21T15:07:31Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Project leaders ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Project leaders ==</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In 1980 [[Herwig Schopper]] announced that Emilio Picasso would lead the LEP project once it was approved,<ref>66th Session of Council, 26 - 27 Jun 1980 - CERN, Geneva, Switzerland, CERN/1377/Draft, https://cds.cern.ch/record/28023/.</ref> Emilio held this post through the construction, and initial operation of LEP 1 until he left CERN in 1992.<ref>Emilio Picasso’s contagious enthusiasm for physics, ''CERN Courier'', 27 January 2015, https://cerncourier.com/a/emilio-picassos-contagious-enthusiasm-for-physics/.</ref> In 1990 Carlo Wyss became deputy to the LEP 200 project leader, Günther Plass, who was the Director for Accelerators at the time.<ref>Archives of Large Electron Positron Collider Division and Committee, LEP and LEPC, https://sis.web.cern.ch/archives/CERN_archive/guide/accelerators/LEP/isalep.</ref> Wyss was appointed LEP 200 project leader by [[Carlo Rubbia]] in January 1991, a position he held until <del style="font-weight: bold; text-decoration: none;">he was replaced by </del>Stephen Myers in April 1996.<ref name=":0">Stephen Myers - More collaboration for accelerators, ''CERN Bulletin'', No. 05-06/2009, 26 January 2009, https://cds.cern.ch/journal/CERNBulletin/2009/06/News%20Articles/1156859.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>In 1980 [[Herwig Schopper]] announced that Emilio Picasso would lead the LEP project once it was approved,<ref>66th Session of Council, 26 - 27 Jun 1980 - CERN, Geneva, Switzerland, CERN/1377/Draft, https://cds.cern.ch/record/28023/.</ref> Emilio held this post through the construction, and initial operation of LEP 1 until he left CERN in 1992.<ref>Emilio Picasso’s contagious enthusiasm for physics, ''CERN Courier'', 27 January 2015, https://cerncourier.com/a/emilio-picassos-contagious-enthusiasm-for-physics/.</ref> In 1990 Carlo Wyss became deputy to the LEP 200 project leader, Günther Plass, who was the Director for Accelerators at the time.<ref>Archives of Large Electron Positron Collider Division and Committee, LEP and LEPC, https://sis.web.cern.ch/archives/CERN_archive/guide/accelerators/LEP/isalep.</ref> Wyss was appointed LEP 200 project leader by [[Carlo Rubbia]] in January 1991, a position he held until Stephen Myers <ins style="font-weight: bold; text-decoration: none;">took over </ins>in April 1996.<ins style="font-weight: bold; text-decoration: none;"><ref>Letter April 23<sup>rd</sup> 1996 – From Christopher Llewellyn Smith to Steve Myers Ref: DG/cce/1811, CERN-ARCH-DG-CLS-05-01-11, https://cds.cern.ch/record/1009675.</ref></ins><ref name=":0">Stephen Myers - More collaboration for accelerators, ''CERN Bulletin'', No. 05-06/2009, 26 January 2009, https://cds.cern.ch/journal/CERNBulletin/2009/06/News%20Articles/1156859.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></ref><ref>A Personal History of CERN Particle Colliders (1972–2022), Stephen Myers, Highlights in High-Energy Physics, '''2025''', ''1''(1): 9. doi: [https://doi.org/10.53941/hihep.2025.100009 10.53941/hihep.2025.100009].</ref><ref>IPAC2010 Accelerator Prize article: Particle accelerators and colliders, Stephen Myers, ''Phys. Rev. Accel. Beams'' '''23''' (2020) 124802, [http://dx.doi.org/10.1103/PhysRevAccelBeams.23.124802 10.1103/PhysRevAccelBeams.23.124802].</ref> Myers led the project until its end in year 2000.<ref name=":0" /> </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></ref><ref>A Personal History of CERN Particle Colliders (1972–2022), Stephen Myers, Highlights in High-Energy Physics, '''2025''', ''1''(1): 9. doi: [https://doi.org/10.53941/hihep.2025.100009 10.53941/hihep.2025.100009].</ref><ref>IPAC2010 Accelerator Prize article: Particle accelerators and colliders, Stephen Myers, ''Phys. Rev. Accel. Beams'' '''23''' (2020) 124802, [http://dx.doi.org/10.1103/PhysRevAccelBeams.23.124802 10.1103/PhysRevAccelBeams.23.124802].</ref> Myers led the project until its end in year 2000.<ref name=":0" /> </div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=12092&oldid=prev
Vigen at 04:32, 21 April 2026
2026-04-21T04:32:17Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>LEP collided electrons with positrons at energies that reached 209 GeV. It was a circular collider with a circumference of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through Switzerland and France. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the [[Large Hadron Collider]], which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of leptons ever built.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>LEP collided electrons with positrons at energies that reached 209 GeV. It was a circular collider with a circumference of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through Switzerland and France. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the [[Large Hadron Collider]], which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of leptons ever built.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The LEP <del style="font-weight: bold; text-decoration: none;">design</del>, <del style="font-weight: bold; text-decoration: none;">a it </del>evolved, <del style="font-weight: bold; text-decoration: none;">was </del>presented in the so-called [[Blue book|Blue]], [[Pink book|Pink]] and [[Green book|Green books]].</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Design ==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The original feasibility study was published in 1976.<ref>Physics with very high-energy e+e− colliding beams, CERN-76-18, [http://dx.doi.org/10.5170/CERN-1976-018 doi:10.5170/CERN-1976-018].</ref> </ins>The LEP <ins style="font-weight: bold; text-decoration: none;">designs</ins>, <ins style="font-weight: bold; text-decoration: none;">as the project </ins>evolved, <ins style="font-weight: bold; text-decoration: none;">were subsequently </ins>presented in the so-called [[Blue book|Blue]], [[Pink book|Pink]] and [[Green book|Green books]].</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Project leaders ==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In 1980 [[Herwig Schopper]] announced that Emilio Picasso would lead the LEP project once it was approved,<ref>66th Session of Council, 26 - 27 Jun 1980 - CERN, Geneva, Switzerland, CERN/1377/Draft, https://cds.cern.ch/record/28023/.</ref> Emilio held this post through the construction, and initial operation of LEP 1 until he left CERN in 1992.<ref>Emilio Picasso’s contagious enthusiasm for physics, ''CERN Courier'', 27 January 2015, https://cerncourier.com/a/emilio-picassos-contagious-enthusiasm-for-physics/.</ref> In 1990 Carlo Wyss became deputy to the LEP 200 project leader, Günther Plass, who was the Director for Accelerators at the time.<ref>Archives of Large Electron Positron Collider Division and Committee, LEP and LEPC, https://sis.web.cern.ch/archives/CERN_archive/guide/accelerators/LEP/isalep.</ref> Wyss was appointed LEP 200 project leader by [[Carlo Rubbia]] in January 1991, a position he held until he was replaced by Stephen Myers in April 1996.<ref name=":0">Stephen Myers - More collaboration for accelerators, ''CERN Bulletin'', No. 05-06/2009, 26 January 2009, https://cds.cern.ch/journal/CERNBulletin/2009/06/News%20Articles/1156859.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ref><ref>A Personal History of CERN Particle Colliders (1972–2022), Stephen Myers, Highlights in High-Energy Physics, '''2025''', ''1''(1): 9. doi: [https://doi.org/10.53941/hihep.2025.100009 10.53941/hihep.2025.100009].</ref><ref>IPAC2010 Accelerator Prize article: Particle accelerators and colliders, Stephen Myers, ''Phys. Rev. Accel. Beams'' '''23''' (2020) 124802, [http://dx.doi.org/10.1103/PhysRevAccelBeams.23.124802 10.1103/PhysRevAccelBeams.23.124802].</ref> Myers led the project until its end in year 2000.<ref name=":0" /> </ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==References==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{reflist}}</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=12091&oldid=prev
Vigen at 19:28, 20 April 2026
2026-04-20T19:28:29Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 19:28, 20 April 2026</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>LEP collided electrons with positrons at energies that reached 209 GeV. It was a circular collider with a circumference of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through Switzerland and France. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the [[Large Hadron Collider]], which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of leptons ever built.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>LEP collided electrons with positrons at energies that reached 209 GeV. It was a circular collider with a circumference of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through Switzerland and France. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the [[Large Hadron Collider]], which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of leptons ever built.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The LEP design, a it evolved, was presented in the so-called [[Blue book|Blue]], [[Pink book|Pink]] and [[Green book|Green books]].</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=7961&oldid=prev
Vigen at 13:11, 22 March 2026
2026-03-22T13:11:24Z
<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Pages linking to Wikipedia]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Pages linking to Wikipedia]]</div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=7223&oldid=prev
Vigen at 04:12, 30 January 2026
2026-01-30T04:12:01Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 04:12, 30 January 2026</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The '''Large Electron–Positron Collider''' ('''LEP''') was one of the largest <del style="font-weight: bold; text-decoration: none;">[[</del>particle <del style="font-weight: bold; text-decoration: none;">accelerator]]s </del>ever constructed. It was built at [[CERN]], a multi-national centre for research in nuclear and particle physics near <del style="font-weight: bold; text-decoration: none;">[[</del>Geneva<del style="font-weight: bold; text-decoration: none;">]]</del>, Switzerland. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The '''Large Electron–Positron Collider''' ('''LEP''') was one of the largest particle <ins style="font-weight: bold; text-decoration: none;">accelerators </ins>ever constructed. It was built at [[CERN]], a multi-national centre for research in nuclear and particle physics near Geneva, Switzerland. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>LEP collided <del style="font-weight: bold; text-decoration: none;">[[electron]]s </del>with <del style="font-weight: bold; text-decoration: none;">[[positron]]s </del>at energies that reached 209 GeV. It was a circular collider with a <del style="font-weight: bold; text-decoration: none;">[[</del>circumference<del style="font-weight: bold; text-decoration: none;">]] </del>of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through <del style="font-weight: bold; text-decoration: none;">[[</del>Switzerland<del style="font-weight: bold; text-decoration: none;">]] </del>and <del style="font-weight: bold; text-decoration: none;">[[</del>France<del style="font-weight: bold; text-decoration: none;">]]</del>. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the [[Large Hadron Collider]], which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of <del style="font-weight: bold; text-decoration: none;">[[lepton]]s </del>ever built.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>LEP collided <ins style="font-weight: bold; text-decoration: none;">electrons </ins>with <ins style="font-weight: bold; text-decoration: none;">positrons </ins>at energies that reached 209 GeV. It was a circular collider with a circumference of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through Switzerland and France. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the [[Large Hadron Collider]], which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of <ins style="font-weight: bold; text-decoration: none;">leptons </ins>ever built.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia]].</div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=5881&oldid=prev
Vigen: Vigen moved page Large Electron–Positron Collider to Large Electron-Positron Collider
2026-01-14T07:45:14Z
<p>Vigen moved page <a href="/index.php/Large_Electron%E2%80%93Positron_Collider" class="mw-redirect" title="Large Electron–Positron Collider">Large Electron–Positron Collider</a> to <a href="/index.php/Large_Electron-Positron_Collider" title="Large Electron-Positron Collider">Large Electron-Positron Collider</a></p>
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<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 07:45, 14 January 2026</td>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=5878&oldid=prev
Vigen: Removed redirect to LEP
2026-01-14T07:42:52Z
<p>Removed redirect to <a href="/index.php/LEP" class="mw-redirect" title="LEP">LEP</a></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 07:42, 14 January 2026</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">#REDIRECT </del>[[LEP]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The '''Large Electron–Positron Collider''' ('''LEP''') was one of the largest [[particle accelerator]]s ever constructed. It was built at [[CERN]], a multi-national centre for research in nuclear and particle physics near [[Geneva]], Switzerland. </ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">LEP collided [[electron]]s with [[positron]]s at energies that reached 209 GeV. It was a circular collider with a [[circumference]] of 27 kilometres built in a tunnel roughly 100&nbsp;m underground and passing through [[Switzerland]] and [[France]]. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the </ins>[[<ins style="font-weight: bold; text-decoration: none;">Large Hadron Collider]], which re-used the </ins>LEP <ins style="font-weight: bold; text-decoration: none;">tunnel. To date, LEP is the most powerful accelerator of [[lepton]]s ever built.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">For more information, see [[wikipedia:Large_Electron–Positron_Collider|Wikipedia</ins>]]<ins style="font-weight: bold; text-decoration: none;">.</ins></div></td></tr>
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Vigen
https://wiki.cern.ch/index.php?title=Large_Electron-Positron_Collider&diff=5395&oldid=prev
Vigen at 08:03, 3 December 2025
2025-12-03T08:03:52Z
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Vigen