| Project/Area Number |
22340061
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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 | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Tokai University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KUSHIDA Junko 東海大学, 理学部, 准教授 (80366020)
YOSHIMURA Koji 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (50272464)
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| Co-Investigator(Renkei-kenkyūsha) |
KAJINO Fumiyoshi 甲南大学, 理工学部, 教授 (50204392)
SASAKI Osamu 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (30178636)
NAKAYA Tsuyoshi 京都大学, 理学研究科, 教授 (50314175)
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2011: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Keywords | 宇宙線(実験) / 超高エネルギーガンマ線 / SiPM / 大気チェレンコフ望遠鏡 / 高エネルギー宇宙物理学 / 光センサー / フォトンカウンティング / ガンマ線天文学 / 宇宙線 / シリコンフォトマル / フォトン検出器 / CTA / 非熱的放射 |
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| Research Abstract |
We studied the basic characteristics of MPPC(3mm×3mm size,50μm pitch), and found that the temperature characteristics of the gain is-3.1×10^4/℃, noise rate depends on both overvoltage and temperature, cross talk probability as a function of overvoltage is expressed by a combination of exponential function and linear function, and the sum probability of cross talk and after pulse don't depend on the temperature. Then we built prototype camera for an atmospheric Cherenkov telescope, which consist of 4 discrete arrays of 4ch by 4ch MPPCs (3mm×3mm size, 50μm pitch). We didn't succeed to detect atmospheric Cherenkov image mainly due to higher trigger rate compared to pulse width of MPPC signals.
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