Development of a low-background micro-pixel chamber for directional dark matter searches

Directionality is said to provide robust evidence of the direct detection of the halo dark matter Weakly Interacting Massive Particles (WIMPs). Time projection chambers with micro-patterned gaseous detectors (MPGDs) are one of the common devices used in directional WIMP searches. A micro-pixel chamber (μ-PIC), one of the various types of MPGDs, with specially selected low background materials (LBGμ-PIC) was developed and its performance was studied. The radon emission of the LBGμ-PIC was less than 1/46 of that of the μ-PIC currently in use. Although a non-negligible gain non-homogeneity was seen for the LBGμ-PIC, it can be used for the directional WIMP search with the correction of the non-homogeneity.

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Publication Details

Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Published
2024-12-11
DOI
https://doi.org/10.1016/j.nima.2024.170145
Primary Topic
Dark Matter and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
0.00

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Development of a low-background micro-pixel chamber for directional dark matter searches

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Development of a low-background micro-pixel chamber for directional dark matter searches

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article en

Abstract

Directionality is said to provide robust evidence of the direct detection of the halo dark matter Weakly Interacting Massive Particles (WIMPs). Time projection chambers with micro-patterned gaseous detectors (MPGDs) are one of the common devices used in directional WIMP searches. A micro-pixel chamber (μ-PIC), one of the various types of MPGDs, with specially selected low background materials (LBGμ-PIC) was developed and its performance was studied. The radon emission of the LBGμ-PIC was less than 1/46 of that of the μ-PIC currently in use. Although a non-negligible gain non-homogeneity was seen for the LBGμ-PIC, it can be used for the directional WIMP search with the correction of the non-homogeneity.

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated EquipmentVol. 1072
Waseda University (JP), Nakanihon Automotive College (JP), Tokyo University of Science (JP), Tohoku University (JP), Kyoto University (JP), Kavli Institute for the Physics and Mathematics of the Universe (JP), Kobe University (JP)
Kaken Pharmaceutical
Openalex Percentile: Top 94%
Dark Matter and Cosmic Phenomena
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