LEP experiments spokesmen - Revision history

Vigen at 08:28, 21 April 2026

2026-04-21T08:28:01Z

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	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.		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.

	The experiments, with their spokesmen—later 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>		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>

	== ALEPH (approved 18 Nov. 1982, finished 21 March 2014, data analysis ongoing) ==		== ALEPH (approved 18 Nov. 1982, finished 21 March 2014, data analysis ongoing) ==
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	{{reflist}}		{{reflist}}
	[[Category:People]]		[[Category:People]]
	[[Category:LEP ~~experiments~~]]		[[Category:LEP]]

Vigen at 05:56, 21 April 2026

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	==References==		==References==
	{{reflist}}		{{reflist}}
			[[Category:People]]
	[[Category:LEP experiments]]		[[Category:LEP experiments]]
	~~[[Category:People]]~~

Vigen at 09:49, 20 April 2026

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	* Ugo Amaldi (1983–1993)<ref>Grey book, 1983 and 1993.</ref>		* 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>		* 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–October 1998~~)<ref>Grey book, November 1996.</ref>		* Danile Treille (1996–1997)<ref>Grey book, November 1996.</ref>
	* Walter Anton (Wilbur) Venus (~~November~~ 1998–1999)<ref name=":1" />		* Walter Anton (Wilbur) Venus (1998–1999)<ref name=":1" />
	* Tiziano Camporesi (2000–February 2002)<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>		* Jan Timmermans (February 2002– )<ref name=":1" /><ref>Grey book, https://greybook.cern.ch/experiment/detail?id=DELPHI.</ref>

Vigen at 15:20, 16 April 2026

2026-04-16T15:20:16Z

← Older revision		Revision as of 15:20, 16 April 2026
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	{{reflist}}		{{reflist}}
	[[Category:LEP experiments]]		[[Category:LEP experiments]]
			[[Category:People]]

Vigen at 15:17, 16 April 2026

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← Older revision		Revision as of 15:17, 16 April 2026
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	Four large LEP experiments, ALEPH, OPAL, 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 were approved.		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.

	The experiments, with their spokesmen—later 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>		The experiments, with their spokesmen—later 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>

Vigen at 15:15, 16 April 2026

2026-04-16T15:15:42Z

← Older revision		Revision as of 15:15, 16 April 2026
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			Four large LEP experiments, ALEPH, OPAL, 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 were approved.

			The experiments, with their spokesmen—later 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>

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

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	== DELPHI (approved 18 Nov. 1982, finished 27 March 2017, data analysis ongoing) ==		== DELPHI (approved 18 Nov. 1982, finished 27 March 2017, data analysis ongoing) ==
	~~Ugo Amaldi (1983–1993)~~

	~~Jean-Eudes Augustin (1994–1995) Source end date <<nowiki>https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Angustin_cv.pdf</nowiki>>~~

	~~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		* 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>
	Walter Anton (Wilbur) Venus (November 1998–1999)		* Danile Treille (1996–October 1998)<ref>Grey book, November 1996.</ref>
			* Walter Anton (Wilbur) Venus (November 1998–1999)<ref name=":1" />
	Tiziano Camporesi (2000–February 2002)		* 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>
	Jan Timmermans (February 2002– )

	== LEP5 (BREMS) (approved 6 Apr. 1989, finished 06-04-1999) ==		== LEP5 (BREMS) (approved 6 Apr. 1989, finished 06-04-1999) ==
	Diambrini (1989–1999)		Giordano Diambrini Palazzi (1989–1999)<ref>Grey book, 1989 and 1999.</ref>

	== LEP6 (MODAL) (approved 27 Sep. 1989, finished 18-02-2002) ==		== LEP6 (MODAL) (approved 27 Sep. 1989, finished 18-02-2002) ==
	J. L. Pinfold (1989–2002)		James L. Pinfold (1989–2002)<ref>Grey book, 1989.

			</ref><ref name=":1" />

	==References==		==References==
	{{reflist}}		{{reflist}}
			[[Category:LEP experiments]]

Vigen at 14:00, 16 April 2026

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

	* Aldo Michelini (1983–1994) <~~<nowiki~~>https://home.cern/news/obituary/cern/aldo-michelini-1930-2020</~~nowiki>~~> ~~states until 1995~~		* 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>
	* 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>		* 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) ~~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~~.		* David Plane (September 1998–2010)<ref>David Plane, Curriculum vitae, https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Plane_cv.pdf.</ref>

	== L3 (approved 18 Nov. 1982, finished 2 November 2010) ==		== L3 (approved 18 Nov. 1982, finished 2 November 2010) ==
	~~Samuel Ting (1983–2010)~~

	~~Hans Hofer~~ (~~April 1999–2010~~)~~, together with Ting? See~~ <~~<nowiki~~>https://greybook.cern.ch/experiment/detail?id=L3</~~nowiki~~>>		* Samuel Ting (1983–2010)<ref name=":2">Grey book, https://greybook.cern.ch/experiment/detail?id=L3.</ref>
			* Hans Hofer (April 1999–2010)<ref name=":1" /><ref name=":2" />

	== DELPHI (approved 18 Nov. 1982, finished 27 March 2017, data analysis ongoing) ==		== DELPHI (approved 18 Nov. 1982, finished 27 March 2017, data analysis ongoing) ==
	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.		Ugo Amaldi (1983–1993)

	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.~~

	Jean-Eudes Augustin (1994–1995) Source end date <<nowiki>https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Angustin_cv.pdf</nowiki>>		Jean-Eudes Augustin (1994–1995) Source end date <<nowiki>https://labcit.ligo.caltech.edu/~BCBAct/PDF%20files/Angustin_cv.pdf</nowiki>>

Vigen at 13:39, 16 April 2026

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	Jan Timmermans (February 2002– )		Jan Timmermans (February 2002– )

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

	== MODAL (approved 27 Sep. 1989, finished 18-02-2002) ==		== LEP6 (MODAL) (approved 27 Sep. 1989, finished 18-02-2002) ==
	J. L. Pinfold (1989–2002)		J. L. Pinfold (1989–2002)

	==References==		==References==
	{{reflist}}		{{reflist}}

Vigen at 13:36, 16 April 2026

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	== ALEPH (approved 18 Nov. 1982, finished 21~~-03-~~2014) ==		== ALEPH (approved 18 Nov. 1982, finished 21 March 2014, data analysis ongoing) ==

	* 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>		* 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>
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	* John Peter Dornan (1997– March 2000)<ref name=":0" /><ref name=":1">Grey book, electronic version (historical record of roles).</ref>		* 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" />		* Wolf-Dieter Schlater (April 2000–March 2001)<ref name=":0" /><ref name=":1" />
	* Roberto Tenchini (April ~~2001–2014~~)<ref name=":0" /><ref name=":1" />		* Roberto Tenchini (April 2001– )<ref name=":0" /><ref name=":1" />

	== OPAL (approved 18 Nov. 1982, finished ~~02-11-~~2010) ==		== OPAL (approved 18 Nov. 1982, finished 2 November 2010) ==

	* Aldo Michelini (1983–1994) <<nowiki>https://home.cern/news/obituary/cern/aldo-michelini-1930-2020</nowiki>> states until 1995		* Aldo Michelini (1983–1994) <<nowiki>https://home.cern/news/obituary/cern/aldo-michelini-1930-2020</nowiki>> states until 1995
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	* 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.		* 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.

	== L3 (approved 18 Nov. 1982, finished ~~02-11-~~2010) ==		== L3 (approved 18 Nov. 1982, finished 2 November 2010) ==
	Samuel Ting (1983–2010)		Samuel Ting (1983–2010)

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

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

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	Tiziano Camporesi (2000–February 2002)		Tiziano Camporesi (2000–February 2002)

	Jan Timmermans (February ~~2002–today~~)		Jan Timmermans (February 2002– )

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

Vigen at 13:08, 16 April 2026

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← Older revision		Revision as of 13:08, 16 April 2026
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	* 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>		* 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) ~~Source for end year~~: ~~<<nowiki~~>~~https~~://~~cds~~.~~cern~~.ch/~~record~~/~~897514/files/cer-002567958~~.~~pdf~~</~~nowiki>~~>		* 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) ~~Source for end year:~~ <~~<nowiki>https~~:/~~/cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>~~>		* Lorenzo Foa (1993–1994)<ref name=":0" />
	* Luigi Rolandi (1994–1997) ~~Source for end year: <~~<~~nowiki>https~~:/~~/cds.cern.ch/record/897514/files/cer-002567958.pdf</nowiki>~~>		* Luigi Rolandi (1994–1997)<ref name=":0" />
	* John Peter Dornan (1997– March 2000)		* 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)		* Wolf-Dieter Schlater (April 2000–March 2001)<ref name=":0" /><ref name=":1" />
	* 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~~		* Roberto Tenchini (April 2001–2014)<ref name=":0" /><ref name=":1" />

	== OPAL (approved 18 Nov. 1982, finished 02-11-2010) ==		== OPAL (approved 18 Nov. 1982, finished 02-11-2010) ==
	~~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>~~>		* Aldo Michelini (1983–1994) <<nowiki>https://home.cern/news/obituary/cern/aldo-michelini-1930-2020</nowiki>> states until 1995
			* 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) 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.		* 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.

	== L3 (approved 18 Nov. 1982, finished 02-11-2010) ==		== L3 (approved 18 Nov. 1982, finished 02-11-2010) ==