第三届地下和空间粒子物理与宇宙物理前沿问题研讨会

Virtual segmentation of a small contact HPGe detector

9 May 2024, 14:40

20m

二楼第三会议厅

01 - 分会报告 09 - 探测器物理与技术 09 - 探测器物理与技术

Speaker

Wenhan Dai

Description

Exploring hit positions of recorded events can help to understand and suppress backgrounds in rare event searches. We propose a pulse shape analysis method to discriminate single-site events (SSEs) in the inner and outer layer of a small contact P-type germanium detector (HPGe). Our method uses the rise time of the charge pulse ($T_Q$) and current pulse ($T_I$) for event discrimination. A Th-228 experiment is conducted to determine the boundaries between the two layers. Our method could be used to suppress surface background like electrons from Ar-42 decay in 0νββ experiments using germanium detectors immersed in liquid argon.

Presentation materials

Virtual Segmentation Method-202509.pdf