| Paper |
Title |
Page |
| TUPCH124 |
Improvement of Co-based Amorphous Core for Untuned Broadband RF Cavity
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1304 |
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- A. Sugiura, M. Kanazawa, T. Misu, S. Yamada
NIRS, Chiba-shi
- K. Katsuki, T. Kusaka, K. Sato
Toshiba, Yokohama
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We have developed a cobalt-based amorphous core as a new magnetic-alloy (MA) core for the loaded RF cavity. Because of its permeability found to be approximately twice as high as that of FINEMET, this MA core is an excellent candidate for constructing a compact broadband RF cavity with less power consumption. In this report, we present our recent studies of the Co-based amorphous core's physical properties and performance. Improvement of the new core coated by new materials surface of ribbon is also described.
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| TUPCH132 |
Higher Order Mode (HOM) Damper of 500 MHz Damped Cavity for ASP Storage Ring
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1325 |
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- J. Watanabe, K. Nakayama, K. Sato, H. Suzuki
Toshiba, Yokohama
- M. Izawa
KEK, Ibaraki
- A. Jackson, G. LeBlanc, K. Zingre
ASP, Clayton, Victoria
- T. Koseki
RIKEN/RARF/CC, Saitama
- N. Nakamura, H. Sakai, H. Takaki
ISSP/SRL, Chiba
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TOSHIBA has delivered the storage ring RF system for the Australian Synchrotron Project(ASP). Two pairs of the 500MHz Higher Order Mode(HOM) damped cavities were applied for this system. Two on-centered and one off-centered dampers were attached for damping the longitudinal HOM impedance down to less than 20kOhm/GHz. In order to reduce the coupling of off-center damper for accelerating mode and improve cooling power of damper, New HOM damper was designed by optimizing SiC absorber structure and damper antenna length using HFSS code. The design and manufacture of the new HOM damper and the test are described.
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