| Project/Area Number |
62460015
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
核・宇宙線・素粒子
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
RESEARCH Assistant HABA Osaka Univ., Faculty of Science, 理学部, 助手 (60180923)
RESEARCH Assistant SUZUK Osaka Univ., Faculty of Science, 理学部, 助手 (70144425)
PROFESSER NAGASHIMA Yori Osaka Univ., Faculty of Science, 理学部, 教授 (90044768)
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| Project Period (FY) |
1987 – 1988
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| Project Status |
Completed (Fiscal Year 1988)
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| Budget Amount *help |
¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 1988: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1987: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Keywords | CALORIMETER / BARIUM FLUORIDE / ELECTROMAGNETIC SHOWER / WAVE LENGTH SHIFTER / 粒子識別 / バリウムフロフイド / 高速応答 / フラッシュADC / 多粒子選別 |
|---|
| Research Abstract |
In order to observe rare phenomena in particle physics, high intensity accelerators are now proposed: SSC, K-factory, B-factory, and Z-factory. Those experiments require high repetition electromagnetic calorimeter to detect rare events in the high level backgrounds. Barium fluoride hae recently attracted considerable interest as a shower material for electro magnetic calorimeters because of its fast response. We have investigated the following subjects;
(1) Detection of first component signals :Using C_sT_e photocathode or band-pass filters.
(2) Linearities and resolutions for the fast component signals.
(3) B_aF_2 response to incident particle species: Electron, proton, pion.
(4) Electron/ pion identification.
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