| Project/Area Number |
23403003
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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 | 海外学術 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NAKANO Toshiyuki 名古屋大学, 大学院・理学研究科, 講師 (50345849)
SATO Osamu 名古屋大学, エコトピア科学研究所, 助教 (20377964)
NAKA Tatsuhiro 名古屋大学, 高等研究院, 助教 (00608888)
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| Project Period (FY) |
2011-11-18 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | 暗黒物質 / 原子核乾板 / イタリア・グランサッソー研究所 / ダークマター |
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| Research Abstract |
In order to realize directional dark matter experiment using fine-grain nuclear emulsion, technical R&D studies and neutron flux measurement at Gran Sasso underground laboratory in Italy have been carried out. We suceeded to establish a stable production method of 20nm size nuclear emulsion. Gold deposition development method was developped to generate a round shape grains which is suited for optical read-out. Using high resolution optical microscope with developped elipsoidal shape fitting metod, tracks with 200nm length can be recognized with high efficiency. We developped a dedicated automated read-out system PTS and made systematic studies possible. Also neutron flux measurement using OPERA detector and fine grain nucler emulison were carried out in LNGS.
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