EPJ Web of Conferences (Jan 2018)

Study of Negative-Ion TPC Using μ-PIC for Directional Dark Matter Search

  • Ikeda Tomonori,
  • Miuch Kentaro,
  • Ochi Atsuhiko,
  • Yakabe Ryota,
  • Hashimoto Takashi,
  • Taishaku Ryosuke,
  • Snowden-Ifft Daniel P.,
  • Gauvreau Jean-Luc,
  • Tanimori Toru,
  • Takada Atsushi,
  • Nakamura Kiseki

DOI
https://doi.org/10.1051/epjconf/201817402006
Journal volume & issue
Vol. 174
p. 02006

Abstract

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Negative-ion time projection chambers(TPCs) have been studied for low-rate and high-resolution applications such as dark matter search experiments. Recently, a full volume fiducialization in a self-triggering TPC was realized. This innovative technology demonstrated a significant reduction in the background with MWPC-TPCs. We studied negative-ion TPC using the μ-PIC+GEM system and obtained sufficient gas gain with CS2 gas and SF6 gas at low pressures. We expect an improvement in detector sensitivity and angular resolution with better electronics.