| A Monte Carlo study for the shielding of γ backgrounds induced by radionuclides for CDEX |
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| 引用本文： | 李磊,岳骞,唐昌建,程建平,康克军,李荐民,李金,李玉兰,李元景,马豪,王子敬,薛涛,曾志.A Monte Carlo study for the shielding of γ backgrounds induced by radionuclides for CDEX[J].中国物理 C,2011,35(3):282-287. |
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| 作者姓名： | 李磊 岳骞 唐昌建 程建平 康克军 李荐民 李金 李玉兰 李元景 马豪 王子敬 薛涛 曾志 |
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| 作者单位： | 1. Department of Applied Physics, Sichuan University, Sichuan 610064, China;;2. Department of Engineering Physics, Tsinghua University, Beijing 100084, China;;3. Institute of Physics, Academia Sinica, Taipei 11529, China |
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| 基金项目： | Supported by National Natural Science Foundation of China (10935005,10945002) |
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| 摘 要： | The CDEX (China Dark matter EXperiment) Collaboration will carry out a direct search for WIMPs (Weakly Interacting Massive Particles) using an Ultra-Low Energy Threshold High Purity Germanium (ULE-HPGe) detector at the CJPL (China JinPing deep underground Laboratory). A complex shielding system was designed to reduce backgrounds and a detailed GEANT4 Monte Carlo simulation was performed to study the achievable reduction of γ rays induced by radionuclides and neutron backgrounds by D(γ,n)p reaction. Furthermore, the upper level of allowed radiopurity of shielding materials was estimated under the constraint of the expected goal. Compared with the radiopurity reported by other low-background rare-event experiments, it indicates that the shielding used in the CDEX can be made out of materials with obtainable radiopurity.
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| 关 键 词： | 放射性核素 屏蔽系统 蒙特卡罗 地下实验室 诱导 蒙地卡罗模拟 GEANT4 弱相互作用 |
| 收稿时间： | 2010-6-21 |
| 修稿时间： | 2010-11-5 |
A Monte Carlo study for the shielding of γ backgrounds induced by radionuclides for CDEX |
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| LI Lei, YUE Qian, TANG Chang-Jian CHENG Jian-Ping KANG Ke-Jun LI Jian-Min LI Jin LI Yu-Lan LI Yuan-Jing MA Hao H. T. Wong XUE Tao ZENG Zhi.A Monte Carlo study for the shielding of γ backgrounds induced by radionuclides for CDEX[J].High Energy Physics and Nuclear Physics,2011,35(3):282-287. |
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| Authors: | LI Lei YUE Qian TANG Chang-Jian CHENG Jian-Ping KANG Ke-Jun LI Jian-Min LI Jin LI Yu-Lan LI Yuan-Jing MA Hao H T Wong XUE Tao ZENG Zhi |
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| Institution: | LI Lei1,2 YUE Qian2,1) TANG Chang-Jian1 CHENG Jian-Ping2 KANG Ke-Jun2 LI Jian-Min2 LI Jin2 LI Yu-Lan2 LI Yuan-Jing2 MA Hao2 H. T. Wong3 XUE Tao2 ZENG Zhi2 (on behalf of the CDEX/TEXONO collaboration) 1 Department of Applied Physics,Sichuan University,Sichuan 610064,China 2 Department of Engineering Physics,Tsinghua University,Beijing 100084,China 3 Institute of Physics,Academia Sinica,Taipei 11529,China |
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| Abstract: | |
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| Keywords: | Monte Carlo simulation dark matter underground experiment radionuclides |
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