2013 Fiscal Year Final Research Report
Directional Dark Matter Detection by Nuclear Emulsion - Neutron Flux measurement at LNGS-
| 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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| Keywords | 暗黒物質 / 原子核乾板 / イタリア・グランサッソー研究所 |
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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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[Journal Article] Fine grained nuclear emulsion for higher resolution tracking detector2013
Author(s)
T. Naka, T. Asada, T. Katsuragawa, K. Hakamata, M. Yoshimoto, K. Kuwabara, M. Nakamura, O. Sato, T. Nakano, Y. Tawara, et al.
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Journal Title
Nucl. Instrum. Meth
Volume: A718
Pages: 519-521
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