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Ge-76 0νββ实验中的单点/多点事例甄别方法研究

18 Aug 2021, 10:40
20m
Oral report 5. 粒子物理实验技术 Parallel Session V:Particle Detector Technology

Speaker

bt zhang (清华大学)

Description

高纯锗探测器技术是0νββ实验研究中的代表性探测技术。0νββ末态的两个电子在锗晶体内射程很短,可以认为是“单点事例”。相反,环境本底事例则多为“多点事例”,因此可以通过单点/多点事例甄别去除多点事例从而压低本底。本工作基于BEGe和PPCGe两种类型高纯锗探测器,使用电流最大值参数A和沉积能量E的比值A/E作为甄别参数,开展了单点/多点事例甄别方法研究,取得了显著的降低本底的效果,并利用放射源刻度数据对甄别效率进行了检验。

Primary author

bt zhang (清华大学)

Co-author

Dr 丽桃 杨 (Tsinghua University)

Presentation materials