Tracking performance of the NEWAGE-0.3a direction-sensitive dark matter detector

Hironobu Nishimura, Kentaro Miuchi, Kaori Hattori, Satoru Iwaki, Chihiro Ida, Shigeto Kabuki, Hidetoshi Kubo, Shunsuke Kurosawa, Hiroyuki Sekiya, Atsushi Takada, Michiaki Takahashi, Atsushi Takeda, Toru Tanimori, Ken'ichi Tsuchiya, Kazuki Ueno

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

NEWAGE-0.3a is a prototype direction-sensitive dark matter search detector. We measured its response to electron tracks and nuclear tracks while focusing on the tracking performances in an underground laboratory. It showed a gamma-ray rejection power of 8.1 ± 1.9 × 10-6 at 100 keV α.e.(alpha-equivalent) and an energy resolutions of 45% at 6 MeV α.e. The absolute nuclear efficiency was 80% at 100 keV α.e. and the nuclear directional-dependent efficiency was also measured. The three-dimensional angular resolution for the nuclear track was 46 ± 3° in the energy range from 100 keV α.e. to 400 keV α.e.

Original languageEnglish
Pages (from-to)185-191
Number of pages7
JournalAstroparticle Physics
Volume31
Issue number3
DOIs
Publication statusPublished - 2009 Apr 1
Externally publishedYes

Keywords

  • Dark matter
  • Direction-sensitive
  • Time projection chamber
  • WIMP

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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    Nishimura, H., Miuchi, K., Hattori, K., Iwaki, S., Ida, C., Kabuki, S., Kubo, H., Kurosawa, S., Sekiya, H., Takada, A., Takahashi, M., Takeda, A., Tanimori, T., Tsuchiya, K., & Ueno, K. (2009). Tracking performance of the NEWAGE-0.3a direction-sensitive dark matter detector. Astroparticle Physics, 31(3), 185-191. https://doi.org/10.1016/j.astropartphys.2008.12.011