MPGD simulation in negative-ion gas for direction-sensitive dark matter searches. (April 2020)

• Record Type: Journal Article
• Authors: Ishiura, Hirohisa; Veenhof, Rob; Miuchi, Kentaro; Tomonori, Ikeda
• Is Part Of: Journal of physics. Volume 1498(2020)
• Publication Date: 2020-04
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1498/1/012018
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Negative-ion time projection chambers (NITPCs) provide the absolute z-position from the arrival-times' difference of several species of negative-ions. This is a strong background reduction method for rare event searches, such as direct dark mater searches. The characteristics of micro pattern gaseous detectors (MPGDs) in negative-ion gas were studied by both experiments and simulations to develop an NITPC for dark matter search experiments. An MPGD simulation method for the negative-ion gas with Garfield++, which has not yet been established, was developed. We present herein the MPGD simulation results in negative-ion gas, SF6 gas, together with the experimental results, such as gain, energy resolution, and signal creation from the MPGD for future NITPC optimization.