| Paper |
Title |
Page |
| MOPMY011 |
LLRF System Performance during SC Cavity Conditioning at STF KEK |
536 |
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- S.B. Wibowo
Sokendai, Ibaraki, Japan
- T. Matsumoto, S. Michizono, T. Miura, F. Qiu
KEK, Ibaraki, Japan
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High Energy Accelerator Research Organization (KEK) is now developing a digital low-level radio frequency (LLRF) control system based on digital feedback control at superconducting RF test facility (STF). The goal is to achieve the amplitude and phase stability of the accelerating field in the superconducting accelerator. Testing and evaluation of the digital LLRF system were conducted during the cavity conditioning performed between October and December 2015 to determine the level of performance. To enable cavity signal monitoring, direct sampling system was constructed and evaluated.
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| WEPOR033 |
Progress in the Work on the Tuner Control System of the cERL at KEK |
2742 |
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- F. Qiu, T. Matsumoto, S. Michizono, T. Miura
KEK, Ibaraki, Japan
- S.B. Wibowo
Sokendai, Ibaraki, Japan
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A compact energy recovery linac (cERL), which is a test machine for future 3 GeV ERL project, was constructed at KEK. Five superconducting (SC) cavities were installed in the injector and main linac of the cERL. The SC cavities in cERL are prone to detuning by disturbances such as microphonics. Therefore, a piezo-based tuner system was used to compensate for the detuning of the SC cavity in the cERL. We have proposed advanced control methods that aim at improving the performance of the cERL tuner systems. In this paper, we present the progress in our work on the cERL tuner systems. The preliminary results of the beam-commissioning are also presented.
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