Kürzel, Datum Usage of the Muon Channels at PSI. Kürzel, Datum Design and development of coils and cooling system1970 – 1973 Production of the coils of.

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Presentation transcript:

Kürzel, Datum Usage of the Muon Channels at PSI

Kürzel, Datum Design and development of coils and cooling system1970 – 1973 Production of the coils of Muon Channel 1 (8m)1973 Assembly of Muon Channel Start regular operation of Muon Channel Production of the coils of Muon Channel 2 (5m)1974 Assembly of Muon Channel Operation of Muon Channel 21976

Kürzel, Datum Operation Muon Channel 2 with attached double solenoid1976 – 1980 Operation Muon Channel 2 with pneumatic control system1976 – 1991 Start up with new refrigerator1990 Reconstruction of Cryostat and installation of PLC1991 Close down and disconnection of Muon Channel / 3 Regular operating time per year > 7’000 hrs.

Kürzel, Datum Statistics of quenches during 1975 – 1985 Reason Total Electr. power break Cooling water break Vacuum system Electrical equipm Refrigerator Current leads Human failure Other reason Total Statistics of quenches during 1975 – 1985 Reason Total Electr. power break Cooling water break Vacuum system Electrical equipm Refrigerator Current leads Human failure Other reason Total

Kürzel, Datum No statistics after 1985 Major efforts were done to improve the reliability of water and electrical supply. This was done during the early eighties. With the operation of the new refrigerator (1990) and the implementation of the PLC (1991) there has been less then one quench per year. The Muon Channel is designed for a maximum field of 5 Tesla (870 A). Field settings were done by the experimentalists, generally between 2 Tesla – 4 Tesla.