| Paper |
Title |
Page |
| THP010 |
Low-level RF system for STF
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586 |
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- T. Matsumoto, S. Fukuda, H. Katagiri, S. Michizono, Y. Yano
KEK, Ibaraki
- Z. Geng
IHEP Beijing, Beijing
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The Super-conducting RF Test Facility (STF) has been constructed to establish the production technique of a cavity having a high gradient and operated for the high power testing of the klystron and couplers being installed in the superconducting cavities. An accelerating electric field stability of 0.3% (rms) in amplitude and 0.3 degree (rms) in phase is also required for the RF system in STF. In order to satisfy these requirements, a digital LLRF control system using FPGA is adopted, and the components required for the digital LLRF system have been developed.
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| THP022 |
Status of RF Sources in Super-Conducting RF Test Facility (STF) at KEK
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613 |
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- S. Fukuda, M. Akemoto, H. Hayano, H. Katagiri, S. Kazakov, S. Matsumoto, T. Matsumoto, S. Michizono, H. Nakajima, K. Nakao, T. Shidara, T. Takenaka, Y. Yano, M. Yoshida
KEK, Ibaraki
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Super-conducting rf test facility (STF) has been progessing in KEK since 2005. In this paper, we describe the current status of rf sources in STF. STF rf sources comprise of a long pulse modulator with bouncer circuit, a pulse transformer, an L-band 5MW klystron, power distribution system and low level rf system. We have completed the construction of the first rf system and have been testing for the system evaluation and for the coupler test of the super-conducting cavity. We have a schedule to feed a power to the cryomodule with 8 super-conducting cavities in December of 2006. We also describe the plan of the second rf sources of STF.
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| THP026 |
HIGH POWER TEST OF COUPLER WITH CAPACITIVE WINDOW
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625 |
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- S. Kazakov, F. Furuta, T. Higo, J. H. Hong, H. Matsumoto, T. Saeki, K. Saito, M. Satoh
KEK, Ibaraki
- R. S. Orr
University of Toronto, Toronto, Ontario
- H. Urakata
TETD, Otawara
- Y. Yano
Toshiba, Yokohama
- O. Yushiro
Toshiba Electron Tubes & Devices Co., Ltd, Tokyo
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New type of coupler with capacitive-coupling inner conductor is designed in KEK. This coupler has a module structure, which is convenient for mass-production, assembling and repairing. Four samples of couplers were made and two of them were tested at high power level. The main parameters of the couplers and test results are presented in this paper.
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