Development of a low-alpha-emitting {\mu}-PIC for NEWAGE direction-sensitive dark-matter search

Takashi Hashimoto; Kentaro Miuchi; Kiseki Nakamura; Ryota Yakabe; Tomonori Ikeda; Ryosuke Taishaku; Miki Nakazawa; Hirohisa Ishiura; Atsuhiko Ochi; Yasuo Takeuchi

doi:10.1063/1.5019004

Development of a low-alpha-emitting {\mu}-PIC for NEWAGE direction-sensitive dark-matter search

Instrumentation and Detectors 2018-01-17 v1

Authors: Takashi Hashimoto , Kentaro Miuchi , Kiseki Nakamura , Ryota Yakabe , Tomonori Ikeda , Ryosuke Taishaku , Miki Nakazawa , Hirohisa Ishiura , Atsuhiko Ochi , Yasuo Takeuchi

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Abstract

NEWAGE is a direction-sensitive dark-matter-search experiment that uses a micro-patterned gaseous detector, or {\mu}-PIC, as the readout. The main background sources are {\alpha}-rays from radioactive contaminants in the {\mu}-PIC. We have therefore developed a low-alpha-emitting {\mu}-PICs and measured its performances. We measured the surface {\alpha}-ray emission rate of the {\mu}-PIC in the Kamioka mine using a surface {\alpha}-ray counter based on a micro TPC.

Keywords

low-alpha-emitting micro-PIC NEWAGE direction-sensitive dark matter search surface alpha-ray emission rate micro TPC

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@article{arxiv.1707.09744,
  title  = {Development of a low-alpha-emitting {\mu}-PIC for NEWAGE direction-sensitive dark-matter search},
  author = {Takashi Hashimoto and Kentaro Miuchi and Kiseki Nakamura and Ryota Yakabe and Tomonori Ikeda and Ryosuke Taishaku and Miki Nakazawa and Hirohisa Ishiura and Atsuhiko Ochi and Yasuo Takeuchi},
  journal= {arXiv preprint arXiv:1707.09744},
  year   = {2018}
}

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6 pages, 4 figures

Development of a low-alpha-emitting {\mu}-PIC for NEWAGE direction-sensitive dark-matter search

Abstract

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