| Project/Area Number |
06554003
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | Kyoto University |
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Principal Investigator |
IWASHITA Yoshihisa Kyoto University, Institute for Chemical Research, Instructor, 化学研究所, 助手 (00144387)
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| Co-Investigator(Kenkyū-buntansha) |
OKAMOTO Hiromi Kyoto University, Institute for Chemical Research, Instructor, 化学研究所, 助手 (40211809)
SHIRAI Toshiyuki Kyoto University, Institute for Chemical Research, Instructor, 化学研究所, 助手 (50252507)
NODA Akira Kyoto University, Institute for Chemical Research, Prfessor, 化学研究所, 教授 (20114605)
INOUE Makoto Kyoto University, Institute for Chemical Research, Prfessor, 化学研究所, 教授 (90028176)
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| Project Period (FY) |
1994 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥18,100,000 (Direct Cost: ¥18,100,000)
Fiscal Year 1996: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 1994: ¥6,000,000 (Direct Cost: ¥6,000,000)
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| Keywords | DAW / biperiodic L-support / electron accelerator / cold model / bridge coupler / choke structure |
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| Research Abstract |
Disk-and-Washer accelerating structure, which has excellent stability, high efficiency and good vacuum property, has not been widely used, because it has the mode overlapping problem and its analysis was difficult with only two dimensional or axisymmetric RF codes. One of the purposes for this project is that the biperiodic structure can cure the problem even for the practical application. In these processes we have been trying to reduce the fabrication cost for the mass production. Material tests such as the RF characteristics or vacuum properties are also carried out.
Based on the accumulated knowledge, a power model that can handle high RF power and can keep high vacuum is designed and fabricated. The total length is about 2.5m. The designed operation frequency is 2857MHz, so that it can replace one of the three existing disc-load waveguide accelerating tubes in our laboratory for acceleration tests. It consists of two endplates, two 1.2-m long accelerating tubes and one coaxial bridge coupler in between. We also investigated the coaxial bridge coupler and obtained sufficient results in design strategies and RF characteristics with the use of a choke structure. Three frequency tuners to be installed on the bridge coupler are designed and assembled. The remote control system for the tunes is prepared for the beam acceleration tests. Results from simulation codes and the cold model tests are combined with the measurements of the power model and they are consolidated for the preparation of the beam-acceleration tests.
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