Tuner & LLRF of ILC. Sun YI （孙毅）、 Wang Guangwei （王光伟） Lin Haiying （林海英）、 Qiu Feng （邱丰） Dec.7, 2010 3th workshop of KEK/IHEP on ILC. Outline. Conception is changed from RING to Linac A tuner have been fabricated and test Tuning loop FB on , to locked the frequency of MHI-04 cavity.
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Tuner & LLRF of ILC
Sun YI （孙毅）、Wang Guangwei（王光伟）
Lin Haiying（林海英）、 Qiu Feng（邱丰）
3th workshop of KEK/IHEP on ILC
Long antennas to increase the coupling (input coupler side 0.17, pickup side 0.32)
reduced the input power, but made the field flatness worse
put metal beads on the equator of cell#1 to increase the field and coupling in the input coupler side (not used now):
tuner FB on
piezo 200V --8um --1.2KHz
Measured by grating rule
PZ 300V --6.5um/2 --1.0KHz
1) vacuum tank