2021 Fiscal Year Final Research Report
High pressure xenon gas detector development for direction-sensitive dark matter search with large mass
| Project/Area Number |
18K13567
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Tohoku University (2021)
The University of Tokyo (2020)
Kobe University (2018-2019) |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | ダークマター / キセノンガス / TPC / 柱状再結合 |
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| Outline of Final Research Achievements |
In dark matter search, there is a technique that can achieve both large target mass and directional sensitivity by applying columnar recombination phenomena in high-pressure xenon gas TPC. In this study, we report the results of confirming the occurrence of columnar recombination at 5 MeV alpha-rays. Neutron beam experiments were also conducted with a view to measuring columnar recombination at low energy nuclear recoil.
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| Free Research Field |
希少事象探索
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| Academic Significance and Societal Importance of the Research Achievements |
柱状再結合現象が荷電粒子の角度に応じた変化があるかどうかは、検出器の新しい使い方をする上で興味深い測定と考えている。今回、5MeVのα線での観測に成功しており、本研究期間中に系統的な誤差について評価を行い査読付き論文としての出版ができた点が1つ目の成果となる。また、実際の暗黒物質探索への応用を見据え、中性子ビーム試験の実施準備を完遂させた。コロナの影響で試験自体が本研究期間を少し過ぎてしまったが、試験によるデータ取得も問題なく実施することができた。
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