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Created page with "== ALEPH (approved  18 Nov. 1982, finished 21-03-2014) == * Jack Steinberger (1983–February 1990) Source for end date: Memorial volume for Jack Steinberger (2023) * Jacques Lefrancois (March 1990–1993) Source for end year: <<nowiki>https://cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>> * Lorenzo Foa (1993–1994) Source for end year: <<nowiki>https://cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>> * Luigi Rolandi (1994–1997) Source for en..."
 
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== ALEPH (approved  18 Nov. 1982, finished 21-03-2014) ==
Four large LEP experiments, [[ALEPH experiment|ALEPH]], [[OPAL]], [[L3 experiment|L3]], and [[DELPHI]] were approved by the [[Research Board]] on 18 Nov. 1982.<ref>Minutes of the 60th Meeting of the Research Board held on 18 November 1982, https://cds.cern.ch/record/1015047?ln=en.</ref> Later, also two smaller experiments, [[LEP5]] and [[LEP6]], were approved.


* Jack Steinberger (1983–February 1990) Source for end date: Memorial volume for Jack Steinberger (2023)
The experiments, with their spokesmen—later in time referred to as spokespersons— are listed in the order of the [[Large Electron-Positron Collider Experiments Committee|LEPC]] "intent number".<ref>Letter of intent: ALEPH detector - Aparatus for LEP PHysics, LEPC-I-1, https://cds.cern.ch/record/99719?ln=en<small>.</small>                                                                 </ref><ref>Letter of intent: "OPAL DETECTOR", LEPC-I-2, https://cds.cern.ch/record/627068?ln=en.                                                                                                                                           </ref><ref>Letter of intent, LEP-I-3, (''which became known as L3'') https://cds.cern.ch/record/627067?ln=en.</ref><ref>Letter of intent: DELPHI detector (DEtector with Lepton Photon + Hadron Identification), LEP-I-6, https://cds.cern.ch/record/297860?ln=en.                                                                                                            </ref><ref>Letter of intent to the LEPC : proposal for a single bremsstrahlung monitor for measuring luminosity, beam divergence and longitudinal polarization at LEP,LEP-I-8, https://cds.cern.ch/record/627066.</ref><ref>A proposal to search for highly ionizing particles in e+ e− collisions at LEP, LEPC-I-10, https://cds.cern.ch/record/627062.</ref>
* Jacques Lefrancois (March 1990–1993) Source for end year: <<nowiki>https://cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>>
* Lorenzo Foa (1993–1994) Source for end year: <<nowiki>https://cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>>
* Luigi Rolandi (1994–1997) Source for end year: <<nowiki>https://cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>>
* John Peter Dornan (1997– March 2000)
* Wolf-Dieter Schlater (April 2000–March 2001)
* Roberto Tenchini (April 2001–2005? or 2014?) Source for end year 2005: <<nowiki>https://cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>>. I think it shall be until the experiment finished: 2014


== OPAL  (approved  18 Nov. 1982,  finished 02-11-2010) ==
== ALEPH (approved  18 Nov. 1982, finished 21 March 2014, data analysis ongoing) ==
Aldo Michelini (1983) <<nowiki>https://home.cern/news/obituary/cern/aldo-michelini-1930-2020</nowiki>> states until 1995


Rolf Heuer (1994–August 1998) <<nowiki>https://cerncourier.com/a/council-appoints-rolf-dieter-heuer-as-cerns-next-director-general/</nowiki>>
* Jack Steinberger (1983–February 1990)<ref>Memorial Volume for Jack Steinberger, Julia Steinberger ''et al.'' (eds.), World Scientific, 2022, https://doi.org/10.1142/13088.</ref>
* Jacques Lefrancois (March 1990–1993)<ref name=":0">The ALEPH "experience" : 25 years of memories, Claus Grupen ''et al.'' (eds.), CERN, 2005, http://dx.doi.org/10.17181/CERN.4HNP.JLXQ.</ref>
* Lorenzo Foa (1993–1994)<ref name=":0" />
* Luigi Rolandi (1994–1997)<ref name=":0" />
* John Peter Dornan (1997– March 2000)<ref name=":0" /><ref name=":1">Grey book, electronic version (historical record of roles).</ref>
* Wolf-Dieter Schlater (April 2000–March 2001)<ref name=":0" /><ref name=":1" />
* Roberto Tenchini (April 2001– )<ref name=":0" /><ref name=":1" />


David Plane (September 1998–2010) In my view there must be a typo in the Greybook data (see below: From: 31-08-1999 <sic?> ). Plane must have followed Heuer directly in 1998.
== OPAL  (approved  18 Nov. 1982,  finished 2 November 2010) ==


== L3  (approved  18 Nov. 1982, finished 02-11-2010) ==
* Aldo Michelini (1983–1994)<ref>Aldo Michelini (1930–2020), CERN News, 15 April, 2020, https://home.cern/news/obituary/cern/aldo-michelini-1930-2020.</ref>
Samuel Ting  (1983–2010)
* Rolf Heuer (1994–August 1998)<ref>Council appoints Rolf-Dieter Heuer as CERN’s next director-general, CERN Courier, 18 January 2008, https://cerncourier.com/a/council-appoints-rolf-dieter-heuer-as-cerns-next-director-general/.</ref>
* David Plane (September 1998–2010)<ref>David Plane, Curriculum vitae, https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Plane_cv.pdf.</ref>


Hans Hofer (April 1999–2010), together with Ting? See <<nowiki>https://greybook.cern.ch/experiment/detail?id=L3</nowiki>>
== L3  (approved  18 Nov. 1982, finished 2 November 2010) ==


== DELPHI  (approved  18 Nov. 1982) ==
* Samuel Ting  (1983–2010)<ref name=":2">Grey book, https://greybook.cern.ch/experiment/detail?id=L3.</ref>
I belive the page <nowiki>https://sis.web.cern.ch/archives/CERN_archive/guide/experimental_physics/LEP/isadelphi</nowiki> has not recorded the correct start year for Danile Treille. I can easily ask him.
* Hans Hofer (April 1999–2010)<ref name=":1" /><ref name=":2" />


Ugo Amaldi (1983–1993) The paper <<nowiki>https://arxiv.org/html/2512.11019v1</nowiki>> stated 13 years in the position, but that includes the “preDELPHI” group COLLEPS.
== DELPHI  (approved  18 Nov. 1982, finished 27 March 2017, data analysis ongoing) ==


Jean-Eudes Augustin (1994–1995) Source end date <<nowiki>https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Angustin_cv.pdf</nowiki>>
* Ugo Amaldi (1983–1993)<ref>Grey book, 1983 and 1993.</ref>
* Jean-Eudes Augustin (1994–1995)<ref>Jean-Eudes Augustin: Curriculum vitae, https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Angustin_cv.pdf</ref>
* Danile Treille (1996–1997)<ref>Grey book,  November 1996.</ref>  
* Walter Anton (Wilbur) Venus (1998–1999)<ref name=":1" />
* Tiziano Camporesi (2000–February 2002)<ref name=":1" />
* Jan Timmermans (February 2002– )<ref name=":1" /><ref>Grey book, https://greybook.cern.ch/experiment/detail?id=DELPHI.</ref>


Danile Treille (1996–1998) Source for start year: printed Grey book (wrong in e-version, see below). Idem for end-year. I believe it shall be October 1998
== LEP5 (BREMS) (approved 6 Apr. 1989,  finished 06-04-1999) ==
Giordano Diambrini Palazzi (1989–1999)<ref>Grey book, 1989 and 1999.</ref>


Walter Anton (Wilbur) Venus (November 1998–1999)
== LEP6 (MODAL) (approved 27 Sep. 1989, finished 18-02-2002) ==
James L. Pinfold (1989–2002)<ref>Grey book, 1989.


Tiziano Camporesi (2000–February 2002)
</ref><ref name=":1" />


Jan Timmermans (February 2002–today)
==References==
 
{{reflist}}
== BREMS (approved 6 Apr. 1989,  finished 06-04-1999) ==
[[Category:People]]
Diambrini (1989–1999)
[[Category:LEP]]
 
== MODAL (approved 27 Sep. 1989, finished 18-02-2002) ==
J. L. Pinfold (1989–2002)

Latest revision as of 08:28, 21 April 2026

Four large LEP experiments, ALEPH, OPAL, L3, and DELPHI were approved by the Research Board on 18 Nov. 1982.[1] Later, also two smaller experiments, LEP5 and LEP6, were approved.

The experiments, with their spokesmen—later in time referred to as spokespersons— are listed in the order of the LEPC "intent number".[2][3][4][5][6][7]

ALEPH (approved  18 Nov. 1982, finished 21 March 2014, data analysis ongoing)

  • Jack Steinberger (1983–February 1990)[8]
  • Jacques Lefrancois (March 1990–1993)[9]
  • Lorenzo Foa (1993–1994)[9]
  • Luigi Rolandi (1994–1997)[9]
  • John Peter Dornan (1997– March 2000)[9][10]
  • Wolf-Dieter Schlater (April 2000–March 2001)[9][10]
  • Roberto Tenchini (April 2001– )[9][10]

OPAL  (approved  18 Nov. 1982,  finished 2 November 2010)

  • Aldo Michelini (1983–1994)[11]
  • Rolf Heuer (1994–August 1998)[12]
  • David Plane (September 1998–2010)[13]

L3  (approved  18 Nov. 1982, finished 2 November 2010)

  • Samuel Ting  (1983–2010)[14]
  • Hans Hofer (April 1999–2010)[10][14]

DELPHI  (approved  18 Nov. 1982, finished 27 March 2017, data analysis ongoing)

  • Ugo Amaldi (1983–1993)[15]
  • Jean-Eudes Augustin (1994–1995)[16]
  • Danile Treille (1996–1997)[17]
  • Walter Anton (Wilbur) Venus (1998–1999)[10]
  • Tiziano Camporesi (2000–February 2002)[10]
  • Jan Timmermans (February 2002– )[10][18]

LEP5 (BREMS) (approved 6 Apr. 1989,  finished 06-04-1999)

Giordano Diambrini Palazzi (1989–1999)[19]

LEP6 (MODAL) (approved 27 Sep. 1989, finished 18-02-2002)

James L. Pinfold (1989–2002)[20][10]

References

  1. ↑ Minutes of the 60th Meeting of the Research Board held on 18 November 1982, https://cds.cern.ch/record/1015047?ln=en.
  2. ↑ Letter of intent: ALEPH detector - Aparatus for LEP PHysics, LEPC-I-1, https://cds.cern.ch/record/99719?ln=en.
  3. ↑ Letter of intent: "OPAL DETECTOR", LEPC-I-2, https://cds.cern.ch/record/627068?ln=en.
  4. ↑ Letter of intent, LEP-I-3, (which became known as L3) https://cds.cern.ch/record/627067?ln=en.
  5. ↑ Letter of intent: DELPHI detector (DEtector with Lepton Photon + Hadron Identification), LEP-I-6, https://cds.cern.ch/record/297860?ln=en.
  6. ↑ Letter of intent to the LEPC : proposal for a single bremsstrahlung monitor for measuring luminosity, beam divergence and longitudinal polarization at LEP,LEP-I-8, https://cds.cern.ch/record/627066.
  7. ↑ A proposal to search for highly ionizing particles in e+ e− collisions at LEP, LEPC-I-10, https://cds.cern.ch/record/627062.
  8. ↑ Memorial Volume for Jack Steinberger, Julia Steinberger et al. (eds.), World Scientific, 2022, https://doi.org/10.1142/13088.
  9. ↑ 9.0 9.1 9.2 9.3 9.4 9.5 The ALEPH "experience" : 25 years of memories, Claus Grupen et al. (eds.), CERN, 2005, http://dx.doi.org/10.17181/CERN.4HNP.JLXQ.
  10. ↑ 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 Grey book, electronic version (historical record of roles).
  11. ↑ Aldo Michelini (1930–2020), CERN News, 15 April, 2020, https://home.cern/news/obituary/cern/aldo-michelini-1930-2020.
  12. ↑ Council appoints Rolf-Dieter Heuer as CERN’s next director-general, CERN Courier, 18 January 2008, https://cerncourier.com/a/council-appoints-rolf-dieter-heuer-as-cerns-next-director-general/.
  13. ↑ David Plane, Curriculum vitae, https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Plane_cv.pdf.
  14. ↑ 14.0 14.1 Grey book, https://greybook.cern.ch/experiment/detail?id=L3.
  15. ↑ Grey book, 1983 and 1993.
  16. ↑ Jean-Eudes Augustin: Curriculum vitae, https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Angustin_cv.pdf
  17. ↑ Grey book, November 1996.
  18. ↑ Grey book, https://greybook.cern.ch/experiment/detail?id=DELPHI.
  19. ↑ Grey book, 1989 and 1999.
  20. ↑ Grey book, 1989.
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