Study of radiation background at the north crossing point of the BEPCⅡ in collision mode

MO Xiao-Hu; ZHANG Jian-Yong; ZHANG Qing-Jiang; Achasov Mikhail; CAI Xiao; FU Cheng-Dong; Harris Fred; LIU Qian; Muchnoi Nikolay; QIN Qing; QU Hua-Min; WANG Yi-Fang; XU Jin-Qiang; ZHANG Tian-Bao

doi:10.1088/1674-1137/35/7/009

Chinese Physics C> 2011, Vol. 35> Issue(7) : 642-655 DOI: 10.1088/1674-1137/35/7/009

Study of radiation background at the north crossing point of the BEPCⅡ in collision mode

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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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MO Xiao-Hu, ZHANG Jian-Yong, ZHANG Qing-Jiang, Achasov Mikhail, CAI Xiao, FU Cheng-Dong, Harris Fred, LIU Qian, Muchnoi Nikolay, QIN Qing, QU Hua-Min, WANG Yi-Fang, XU Jin-Qiang and ZHANG Tian-Bao. Study of radiation background at the north crossing point of the BEPCⅡ in collision mode[J]. Chinese Physics C, 2011, 35(7): 642-655. doi: 10.1088/1674-1137/35/7/009

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Received: 2010-09-15
Revised: 2010-11-08

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of radiation background at the north crossing point of the BEPCⅡ in collision mode

Received Date: 2010-09-15

Accepted Date: 2010-11-08

Available Online: 2011-07-05

Abstract: 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.

Study of radiation background at the north crossing point of the BEPCⅡ in collision mode

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Study of radiation background at the north crossing point of the BEPCⅡ in collision mode

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