| Study of radiation background at the north crossing point of the BEPCⅡ in collision mode |
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| 引用本文： | 莫晓虎,张建勇,张清江,Achasov Mikhail,蔡啸,傅成栋,Harris Fred,刘倩,Muchnoi Nikolay,秦庆,屈化民,王贻芳,徐金强,张天保.Study of radiation background at the north crossing point of the BEPCⅡ in collision mode[J].中国物理 C,2011,35(7):642-655. |
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| 作者姓名： | 莫晓虎 张建勇 张清江 Achasov Mikhail 蔡啸 傅成栋 Harris Fred 刘倩 Muchnoi Nikolay 秦庆 屈化民 王贻芳 徐金强 张天保 |
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| 作者单位： | 1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;;2. Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia;;3. Hawaii University, 12345, USA |
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| 基金项目： | National Natural Science Foundation of China，Instrument Developing Project of Chinese Academy of Sciences，Major State Basic Research Development Program，Knowledge Innovation Project of Chinese Academy of Sciences |
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| 摘 要： | Understanding the radiation background at the north crossing point (NCP) in the tunnel of BEPCII is crucial for the performance safety of the High Purity Germanium (HPGe) detector, and in turn of great significance for long-term stable running of the energy measurement system. Therefore, as the first step, a NaI(Tl) detector is constructed to continuously measure the radiation level of photons as background for future experiments. Furthermore, gamma and neutron dosimeters are utilized to explore the radiation distribution in the vicinity of the NCP where the HPGe detector will be located. Synthesizing all obtained information, the shielding for neutron irradiation is studied based on model-dependent theoretical analysis.
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| 关 键 词： | 辐射水平 正负电子对撞机 碰撞模式 HPGe探测器 能源计量系统 中子剂量计 安全性能 稳定运行 |
| 收稿时间： | 2010-9-15 |
| 修稿时间： | 2010-11-8 |
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