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中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

16–19 Aug 2021
Asia/Shanghai timezone

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高纯锗暗物质实验CDEX-50dm中的本底模拟与控制方案

18 Aug 2021, 11:15
15m
Oral report 5. 粒子物理实验技术 Parallel Session V：Particle Detector Technology

Speaker

新平 耿 (清华大学)

Description

继CDEX-1，CDEX-10以后，CDEX合作组正在建设50公斤级的高纯锗阵列实验系统（CDEX-50dm）用于轻质量暗物质直接探测。CDEX-50dm将由PPCGe和BEGe天然锗探测器组成，本底控制在0.01cpkkd@1keV水平，物理目标是WIMP自旋无关灵敏度达到10^-44 cm^2水平。针对CDEX-50dm的本底控制目标，详细模拟了高纯锗探测器从原料处理、制备、运输和探测器研制等各个环节的本底控制，建立了探测器生产标准流程。建立了CDEX-50dm探测器本底模型，并给出本底优化控制方案。

Primary author

新平 耿 (清华大学)

Co-author

Dr 丽桃 杨 (Tsinghua University)

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