2023 Fiscal Year Final Research Report
Development of fine pitch pixel readout gas TPC detector for direction-sensitive dark matter search
| Project/Area Number |
21K13943
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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 | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 暗黒物質 / ガス検出器 / ピクセル検出器 / TPC |
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| Outline of Final Research Achievements |
We developed a gaseous TPC with pixelized readout for the direction-sensitive direct dark matter search to improve its sensitivity in the low-mass region. The development of pixelized readout was challenging due to the high integration of the electronics. In order to solve this issue, we developed a dedicated ASIC. The ASIC has ADCs to obtain waveforms for each channel. We confirmed that ADCs in all channels work as designed. This achievement demonstrated that our front-end electronics is applicable to dark matter experiments. In parallel, we also proceeded with the design of pixelized electrodes. Finally we reached the stage where we obtain all the tools to operate a dark matter experiment.
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| Free Research Field |
素粒子原子核実験
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| Academic Significance and Societal Importance of the Research Achievements |
ピクセル読み出しのためのガスTPC読み出し用のASICは世界中の様々な機関でそれぞれ開発されているが、本研究で開発したASICは波形読み出し用のADCが付いていることと、そのアナログ応答で独自のものであり、方向感度をもつ暗黒物質探索のための読み出し回路として他では代用できないものになっている。低質量の暗黒物質探索においては、方向感度のない探索では太陽ニュートリノ由来の背景事象の分離が難しいことから、本研究の成果は低質量領域探索において重要な進展である。
また、開発したASICは他の素粒子・原子核実験での利用にも関心を持たれており、分野を超えたシナジーが期待される。
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