Track Chamber Committee

In 1960 the Director-General John Adams proposed a number of measures to define a global policy for the exploitation of the new Proton Synchrotron. He decided to create three committees, one for each experimental technique used:

• Bubble Chambers: Track Chamber Committee (TCC)
• Emulsions: Emulsion Committee (EmC)
• Electronic: Electronic Experiments Commitee (EEC)

These three new committees were proposed to replace the Advisory Committee and Bubble Chamber Committee.

The TCC functions were to propose to the Nuclear Physics Research Committee track chamber experiments to be carried out at CERN, and also to form a link between the European track chamber groups and the CERN Laboratory.

The TCC came into operation in 1961, and met about once a month.  It comprised a Chairperson (a senior physicist working on track chamber experiments, not on the staff of CERN) and members (representatives of CERN and other European track chamber groups (including picture evaluation groups)) wanting to use CERN facilities.

After 1966 the TCC was commonly known as the Physics II Committee (PH-II-COM). It considered and selected the proposals for experiments using the bubble chambers at CERN :

• 2 m Hydrogen Bubble Chamber (HBC200)
• 81 cm Hydrogen Bubble Chamber (HBC81)
• Heavy Liquid Bubble Chamber (HLBC)

In 1976 (end of the bubble chambers period) John Adams and Léon Van Hove rationalized the system, abolishing the committee system based on experimental technique, and basing it instead on the machine. EEC and TCC merged to become the Proton Synchrotron Committee (PSC).

1961	1965	1974	1976	1977
EEC	EEC / PH-I-COM	EEC		PSC
TCC	TCC / PH-II-COM		TCC
			PSC

1961 Chairperson: Gregory, B P Index of TCC documents CERN-TCC-61-1 to 58 Fulltexts	1962 Chairperson: Gregory, B P Index of TCC documents CERN-TCC-62-1 to 54 Fulltexts	1963 Chairperson: Gregory, B P Index of TCC documents CERN-TCC-63-1 to 70 Fulltexts
1964 Chairperson: Butler, C C Index of TCC documents CERN-TCC-64-1 to 81 Fulltexts	1965 Chairperson: Butler, C C Index of TCC documents CERN-TCC-65-1 to 77 Fulltexts	1966 Chairperson: Teucher, M W Index of TCC documents CERN-TCC-66-1 to 60 Fulltexts
1967 Chairperson: Teucher, M W Index of TCC documents CERN-TCC-67-1 to 72 Fulltexts	1968 Chairperson: Mulvey, J H Index of TCC documents CERN-TCC-68-1 to 40 Fulltexts	1969 Chairperson: Mulvey, J H Index of TCC documents CERN-TCC-69-1 to 64 Fulltexts
1970 Chairperson: Mulvey, J H Index of TCC documents CERN-TCC-70-1 to 65 Fulltexts	1971 Chairperson: Cresti, M Index of TCC documents CERN-TCC-71-1 to 51 Fulltexts	1972 Chairperson: Cresti, M Index of TCC documents CERN-TCC-72-1 to 42 Fulltexts
1973 Chairperson: Cresti, M Index of TCC documents CERN-TCC-73-1 to 53 Fulltexts	1974 Chairperson: Colley, D C Index of TCC documents CERN-TCC-74-1 to 35 Fulltexts	1975 Chairperson: Colley, D C Index of TCC documents CERN-TCC-75-1 to 32 Fulltexts
1976 Chairperson: Colley, D C Index of TCC documents CERN-TCC-76-1 to 15 Fulltexts

For more information, see https://sis.web.cern.ch/archives/history_CERN/Scientific_committees#TCC