| Paper |
Title |
Page |
| MOPAN028 |
Current Status of Virtual Accelerator at J-PARC 3 GeV Rapid Cycling Synchrotron
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215 |
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- H. Harada, K. Shigaki
Hiroshima University, Higashi-Hiroshima
- K. Furukawa
KEK, Ibaraki
- H. Hotchi, Y. Irie, F. Noda, H. Sako, H. Suzuki
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
- S. Machida
STFC/RAL/ASTeC, Chilton, Didcot, Oxon
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We have developed the logical accelerator called "Virtual Accelerator" based on EPICS for 3 GeV Rapid Cycling Synchrotron (RCS) in J-PARC. The Virtual Accelerator has a mathematical model of the beam dynamics in order to simulate the behavior of the beam and enables the revolutionary commissioning and operation of an accelerator. Additionally, we have constructed the commissioning tool based on the Virtual Accelerator. We will present a current status of the Virtual Accelerator system and some commissioning tool.
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| MOPAN041 |
Design of a Movable Synchrotron Radiation Mask with SiC Absorber for the Photon Factory Advanced Ring (PF-AR)
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248 |
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- T. Takahashi, M. Izawa, S. Sakanaka, K. Umemori
KEK, Ibaraki
- H. Suzuki, J. Watanabe
Toshiba, Yokohama
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We have six rf cavities in the Photon Factory Advanced ring (PF-AR) at KEK. Three years ago, one of them was seriously damaged by the Synchrotron Radiation (SR) from the upstream of the cavity. In order to protect the cavities from SR, we intend to install SR masks nearby the cavities. The masks have to be positioned as close as possible to the beams in order to block the SR completely during the beam storage, and as far as possible during the beam injection. Therefore SR masks should be movable. Since it is placed under strong HOM power from the cavities, careful design is necessary for power dissipation. The basic structure of the movable masks is a coaxial wave-guide with cylindrical SiC absorber whose power capability is designed to be more than 1kW. We report the design of the movable SR masks and the result of rf power test.
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| WEPMN024 |
RF Feedback Control Systems of the J-PARC Linac
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2101 |
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- Z. Fang, S. Anami, S. Michizono, S. Yamaguchi
KEK, Ibaraki
- T. Kobayashi
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
- H. Suzuki
JAEA, Ibaraki-ken
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The commissioning of the J-PARC 181MeV proton linac was started from October of 2006. The RF sources of the linac consist of 4 solid-state amplifiers and 20 klystrons. In each RF source, the RF fields are controlled by a digital RF feedback system installed in a compact PCI (cPCI) to realize the accelerating field stability of ±1% in amplitude and ±1 degree in phase. In this paper the performance of the RF feedback control systems will be reported in detail.
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| WEPMN039 |
Performance of J-PARC Linac RF System
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2128 |
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- T. Kobayashi
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
- S. Anami, Z. Fang, Y. Fukui, M. Kawamura, S. Michizono, K. Nanmo, S. Yamaguchi
KEK, Ibaraki
- E. Chishiro, T. Hori, H. Suzuki, M. Yamazaki
JAEA, Ibaraki-ken
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High power operation of all the RF systems of J-PARC linac was started for the cavity conditioning in October 2006. Twenty 324-MHz klystrons have powered the accelerating cavities successfully, and the beam commissioning was started in November 2006. The performance of the RF drive and control system will be presented.
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| TUPMN052 |
Completion of the Australian Synchrotron Storage Ring RF System Commissioning
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1040 |
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- S. Takama, Y. Hirata, H. Kamikubo, Y. Nobusada, H. Suzuki
Toshiba, Yokohama
- R. T. Dowd, A. Jackson, G. LeBlanc, K. Zingre
ASP, Clayton, Victoria
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The installation and commissioning of the Australian Synchrotron Storage Ring RF System (SR RF System) was completed. SR RF System consists of four sets of 500MHz 150kW-CW klystron and 750kV normal conducting cavity. After the cavity aging, the RF System achieved 48 hours continuous operation in November 2006. The paper will present the design and commissioning results.
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