Study of radiation background at the north crossing point

中国物理C, 2011, 35(7): 642-655. doi: 10.1088/1674-1137/35/7/009

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7, , ^8, , ^9, , ^10, , ^11, , ^12, , ^13, , ^14,

1.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

2.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

3.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

4.Budker Institute of Nuclear Physics,Novosibirsk 630090,Russia

5.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

6.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

7.Hawaii University,12345,USA

8.Hawaii University,12345,USA

9.Budker Institute of Nuclear Physics,Novosibirsk 630090,Russia

10.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

11.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

12.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

13.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

14.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

基金项目: Major State Basic Research Development Program(2009CB825200;2009CB825203;2009CB825206) Knowledge Innovation Project of Chinese Academy of Sciences(KJCX2-YW-N29) National Natural Science Foundation of China(10491303;10775412;10825524) Instrument Developing Project of Chinese Academy of Sciences(YZ200713)

Study of radiation background at the north crossing point

MO Xiao-Hu ^1, , ZHANG Jian-Yong ^2, , ZHANG Qing-Jiang ^3, , Achasov Mikhail ^4, , CAI Xiao ^5, , FU Cheng-Dong ^6, , Harris Fred ^7, , LIU Qian ^8, , Muchnoi Nikolay ^9, , QIN Qing ^10, , QU Hua-Min ^11, , WANG Yi-Fang ^12, , XU Jin-Qiang ^13, , ZHANG Tian-Bao ^14,

1.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

2.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

3.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

4.Budker Institute of Nuclear Physics,Novosibirsk 630090,Russia

5.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

6.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

7.Hawaii University,12345,USA

8.Hawaii University,12345,USA

9.Budker Institute of Nuclear Physics,Novosibirsk 630090,Russia

10.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

11.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

12.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

13.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

14.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

Keywords： radiation dose

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.

参考文献

[1]	FU Cheng-Dong,MO Xiao-Hu.Significance of absolute energy scale for physics at BESⅢ[J].中国物理C（英文版）,2008(10):776-780.
[2]	MO Xiao-Hu,ZHANG Jian-Yong,ZHANG Tian-Bao,ZHANG Qing-Jiang,Achasov Mikhail,FU Cheng-Dong,Muchnoi Nikolay,QIN Qing,QU Hua-Min,WANG Yi-Fang,WU Jing-Min,XU Jin-Qiang,YU Bo-Xiang.Measurement of radiation dose at the north interaction point of BEPCⅡ[J].中国物理C(英文版),2009(10):914-921.
[3]	MO Xiao-Hu,FU Cheng-Dong,ZHANG Jian-Yong,QIN Qing,QU Hua-Min,WANG Yi-Fang,XU Jin-Qiang,ZHANG Tian-Bao.Working principles of the energy measurement system at BEPC Ⅱ[J].中国物理C(英文版),2008(12):995-1002.
[4]	McKeever SWS. .Optically stimulated luminescence dosimetry[J].Nuclear Instruments and Methods in Physics Research, Section B. Beam Interactions with Materials and Atoms,2001(1/2):29-54.

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Study of radiation background at the north crossing point

参考文献