TY - JOUR
T1 - Development of a low-α-emitting μ-PIC as a readout device for direction-sensitive dark matter detectors
AU - Hashimoto, Takashi
AU - Miuchi, Kentaro
AU - Ikeda, Tomonori
AU - Ishiura, Hirohisa
AU - Nakamura, Kiseki D.
AU - Ito, Hiroshi
AU - Ichimura, Koichi
AU - Abe, Ko
AU - Kobayashi, Kazuyoshi
AU - Takada, Atsushi
AU - Ochi, Atsuhiko
AU - Nakamura, Takuma
AU - Shimada, Takuya
N1 - Funding Information:
We gratefully acknowledge the cooperation of Kamioka Mining and Smelting Company. We thank the XMASS collaboration and Yoshizumi Inoue for their help on the low-background measurement technologies. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research, ICRR Joint-Usage, JSPS KAKENHI Grant Numbers 16H02189, 26104004, 26104005, 26104009, 19H05805, 19H05806, and 19H05808.
Funding Information:
We gratefully acknowledge the cooperation of Kamioka Mining and Smelting Company. We thank the XMASS collaboration and Yoshizumi Inoue for their help on the low-background measurement technologies. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research, ICRR Joint-Usage, JSPS KAKENHI Grant Numbers 16H02189 , 26104004 , 26104005 , 26104009 , 19H05805 , 19H05806 , and 19H05808 .
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/10/11
Y1 - 2020/10/11
N2 - Direction sensitivity could provide robust evidence for the direct detection of weakly interacting massive particles constituting dark matter. However, the sensitivity of this method remains low due to the radioactive backgrounds. The purpose of this study is to develop a low-background detector as a two-dimensional imaging device for a gaseous time projection chamber. In direction-sensitive dark matter experiments (e.g. NEWAGE), α-rays emitted from the detector components often create substantial radioactive backgrounds. Based on the study of the background of NEWAGE, a new detector “low-αμ-PIC” is developed. The produced μ-PIC performs well as a gas detector and the α-ray emission rate from the μ-PIC reduced by a factor of 100.
AB - Direction sensitivity could provide robust evidence for the direct detection of weakly interacting massive particles constituting dark matter. However, the sensitivity of this method remains low due to the radioactive backgrounds. The purpose of this study is to develop a low-background detector as a two-dimensional imaging device for a gaseous time projection chamber. In direction-sensitive dark matter experiments (e.g. NEWAGE), α-rays emitted from the detector components often create substantial radioactive backgrounds. Based on the study of the background of NEWAGE, a new detector “low-αμ-PIC” is developed. The produced μ-PIC performs well as a gas detector and the α-ray emission rate from the μ-PIC reduced by a factor of 100.
KW - Gaseous detector
KW - Micro-pattern detector
KW - μ-PIC
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U2 - 10.1016/j.nima.2020.164285
DO - 10.1016/j.nima.2020.164285
M3 - Article
AN - SCOPUS:85087427759
SN - 0168-9002
VL - 977
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
M1 - 164285
ER -