The liquid argon detector and measurement of SiPM array at liquid argon temperature

TL;DR

This paper discusses the development of a liquid argon detector for dark matter and neutrino detection, focusing on the measurement of SiPM arrays at liquid argon temperature to enhance detector performance.

Contribution

It presents the measurement results of SiPM arrays at liquid argon temperature, supporting their use in high-purity, efficient LAr detectors for particle physics experiments.

Findings

Successful measurement of SiPM arrays at LAr temperature

Demonstrated suitability of SiPMs for LAr detector applications

Enhanced photon collection efficiency at cryogenic temperatures

Abstract

Particle detectors based on liquid argon (LAr) have recently become recognized as an extremely attractive technology for the direct detection of dark matter as well as the measurement of coherent elastic neutrino-nucleus scattering (CE$\nu$NS). The Chinese argon group at Institute of High Energy Physics has been studying the LAr detector technology and a LAr detector has been operating steadily. A program of using a dual phase LAr detector to measure the CE$\nu$NS at Taishang Nuclear Power Plant has been proposed and the R\&D work is ongoing. Considering the requirements of ultra-low radio-purity and high photon collection efficiency, SiPMs will be a good choice and will be used in the detector. In this proceeding, an introduction of the LAr detector and the measurement results of SiPM array at LAr temperature will be presented.