1. Cryomodule tests of four Tesla-like cavities in the Superconducting RF Test Facility at KEK
- Author
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Eiji Kako, Hitoshi Hayano, Shuichi Noguchi, Norihito Ohuchi, Masato Satoh, Toshio Shishido, Ken Watanabe, and Yasuchika Yamamoto
- Subjects
Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
A 6-m cryomodule including four Tesla-like cavities was developed, and was tested in the Superconducting RF Test Facility phase-I at KEK. The performance as a total superconducting cavity system was checked in the cryomodule tests at 2 K with high rf power. One of the four cavities achieved a stable pulsed operation at 32 MV/m, which is higher than the operating accelerating gradient in the ILC. The maximum accelerating gradient (E_{acc,max}) obtained in the vertical cw tests was maintained or slightly improved in the cryomodule tests operating in a pulse mode. Compensation of the Lorentz force detuning at 31 MV/m was successfully demonstrated by a piezo tuner and predetuning.
- Published
- 2010
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