2019 Fiscal Year Final Research Report
Development of new techniques for next generation of dark matter search detectors
| Project/Area Number |
17K05465
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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 |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 暗黒物質探索 / キセノン |
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| Outline of Final Research Achievements |
Mechanism of 210Pb accumulation on surface of material was understood better and The prospect of an end to the survey was seen for no accumulation using area neutralization system. Also, the prospect of an end to the survey was seen for sensitivity improvement of radon concentration using the electrostatic collection type radon detector.
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| Free Research Field |
素粒子物理学
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| Academic Significance and Societal Importance of the Research Achievements |
暗黒物質は宇宙の質量の約４分の３を占めるがその正体はなぞのままである。この暗黒物質を探索実験では検出器部材に含まれる、または付着した放射性不純物が暗黒物質の信号を疑似的に作るため、放射性不純物の除去、付着させないことが実験を成功させるカギとなる。本研究により表面に放射性不純物を付着させない方法確立への見通しがたった。また、放射性不純物のなかでも重要なラドンの濃度測定の感度向上のめどがたった。
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