The XIX International Conference on Topics in Astroparticle and Underground Physics (TAUP2025)

Design and preliminary Test Results of a prototype LAr veto System for the CDEX-300 0νββ Experiment

27 Aug 2025, 18:00

2h

International Conference Center

Poster Neutrino Physics and Astrophysics Poster session

Speaker

Yisen Lan

Description

The CDEX-300 is a next generation neutrinoless double beta (0νββ) decay experiment aiming at searching the 0νββ decay of Ge-76 using high purity germanium (HPGe) detectors. One key technology for background suppression in CDEX-300 is the liquid argon (LAr) veto, and the smooth operation and impurity control of the LAr are important for veto performance in the long-term operation. We built a liquid argon prototype system as a test facility for studying the impurity control and veto performance of LAr in the surface building of China Jinping Underground Laboratory. Here we report the design of the system and preliminary test results.