Search for false signals in underground dark matter detectors
| Project/Area Number |
16K05371
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | The University of Tokyo |
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Principal Investigator |
Kozlov Alexandre 東京大学, カブリ数物連携宇宙研究機構, 特任助教 (30528063)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | Dark Matter / underground laboratory / NaI(Tl) detector / dark matter / Ionization Chamber / Radon Detector / Thermal Neutron Detector / neutron-flux variations / radon activity |
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| Outline of Final Research Achievements |
The research project aimed at direct measurement of possible sources of periodic background that may affect search for the Dark Matter at deep underground laboratories was successfully completed. For that purpose, we constructed several particle detectors and installed them at the Kamioka neutrino observatory. The detectors were used to measure the thermal and fast neutron flux, and the radon gas activity underground for a 1-year period. The acquired experimental data are being used to study backgrounds that could give an alternative explanation to the well-known Dark Matter observation claim made by the DAMA/LIBRA collaboration.
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| Academic Significance and Societal Importance of the Research Achievements |
本課題研究により取得された実験データを使った結果は、学術誌に掲載発表された。
これらのデータは、私たちの宇宙の約25％を構成する暗黒物質の起源を理解するために役に立つ。また、これらの結果は新しい物理の探索を目的とした新規の地下実験の計画のためにも利用することができる。本課題研究の期間中、私たちは地元のエンジニアリング会社と協力し、検出器のコンポーネントの製造に必要なサポートを得て、検出器を建設した。大学と産業の間のこのような協力は、神岡のような継続的な人口減少が進む遠隔地でも最先端の研究を続けることを可能にする。
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Report
(4 results)
Research Products
(8 results)
