| Project/Area Number |
11554010
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
OMORI Tsunehiko Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, Research Associate, 素粒子原子核研究所, 助手 (80185389)
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| Co-Investigator(Kenkyū-buntansha) |
KUMITA Tesurou Tokyo Metropolitan University, Department of Physics, Research Associate, 理学部, 助手 (30271159)
HAYANO Hitoshi Accelerator Laboratory, High Energy Accelerator Research Organization, Associate Professor, 加速器研究施設, 助教授 (00173055)
KUKRIHARA Yoshimasa Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, Research Associate, 素粒子原子核研究所, 助手 (50195559)
TSUNEMI Akira Sumitomo Heavy Industries, Researcher, 総合研究所, 研究員
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥9,700,000 (Direct Cost: ¥9,700,000)
Fiscal Year 2001: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2000: ¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 1999: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | polarized positron beam / linear collider / laser Compton scattering / リニアコライダー / laser-Compton scattering / レーザーコンプトン散乱 / head-on-collision / 正面衝突 |
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| Research Abstract |
Studies were done at the Accelerator Test Facility (ATF) in KEK. A vacuum chamber, named Compton chamber, is developed to achieve efficient head-on collision of laser and electron beams. The results of collision experiment to generate γ-rays (Emax = 56 MeV) were as follows.
1) number of generated γ-rays : 1 x 10^6/pulse
2) pulse duration : about 30 p sec
3) polarization of γ-ray the beam was measured
This was the highest intensity of γ-rays generated in this energy region. And this was the first demonstration of polarization measurement of the γ-ray beam of such short pulse duration. It was demonstrated that our proposed method can generate high intensity γ-ray beam efficiently. We think this was the good progress for the development of the polarized positron source.
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