Study of Negative-Ion TPC Using {\mu}-PIC for Directional Dark Matter Search

Understand

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 {\mu}-PIC+GEM system and obtained sufficient gas gain with CS$_{2}$gas and SF$_{6}$ gas at low pressures.