Title :
Long term performance of the TRISTAN superconducting RF cavities
Author :
Kako, E. ; Akai, K. ; Furuya, T. ; Kubo, K. ; Mitsunobu, S. ; Nakai, H. ; Noguchi, S. ; Shishido, T. ; Tajima, T. ; Takahashi, T.
Author_Institution :
KEK, Nat. Lab. for High Energy Phys., Ibaraki, Japan
Abstract :
TRISTAN was operated with an average beam current of 12.0 mA at a beam energy of 29.0 GeV in 1990. The 32 5-cell superconducting RF cavities had been kept cold for about 6 months. No irrecoverable degradation of the cavity performance had been observed in the long-term operation. Changes of the cavity performance, problems, and improvements of the superconducting RF system are described.<>
Keywords :
cavity resonators; electron accelerators; storage rings; superconducting devices; TRISTAN superconducting RF cavities; beam current; irrecoverable degradation; Acceleration; Connectors; Couplers; Degradation; Helium; Laboratories; Niobium; Radio frequency; Refrigeration; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164982
