Study on Background Radiation at Beijing Electron Positron Collider and Radiation Damage of High-Z Scintillation Crystals

CHEN Yu; DAI Chang-Jiang; GU Yi-Fan; LEI Zhuan-Heng; LI Jian-Ping; LIU Shu-Dong; SHAO Bei-Bei; TANG Yue-Li

Chinese Physics C> 1993, Vol. 17> Issue(8) : 673-679

Study on Background Radiation at Beijing Electron Positron Collider and Radiation Damage of High-Z Scintillation Crystals

Institue of High Energy Physics,Academia Sinica,Beijing 100039

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Abstract：
A systematic study of radiation backgrounds in the interaction region at the Beijing e⁺e^－ Collider BEPC is carried out for the first time to the needs of particle physics experiment.An effective method to study dynamically the radiation environment of the collider is successfully developed which allows the measurement of the instantaneous radiation dose rate and is distribution for different beam conditions and as a function of time during a quiet luminosity run.The radiation sensitivity of domestic BGO and BaF₂ crystals in the BEPC environment is examined.

References

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I. Kirkbride, Crystal Ball Note No. 248, SLAC(Oct. 29, 1979).[2]M. A. Van Driel et al.，Nucl. Instr. and Meth.，A215(1983),113.[3]SLAC-Report-229(June 1980),176.[4]顾以藩等，“锗酸秘晶体球实验方案建议气修订稿)，高能物理研究所(1986).[5]J. Kirkby, Proceedings of the Tau-Charm Factory Workshop, SLAC-Report-343(June 1989)294.[6]GEM Collaboration, GEM Letter of Intent to the Superconducting Super Collider Laboratory(Nov. 30,1991).[7]E. Blucher et al.，Nucl. Instr. and Meth.，A249(1986),201.[8]李建平等，高能物理与核物理，12(1988),12.[9]李建平等，“北京谱仪大厅内的辐射水平测定"(内部报告)，高能物理研究所(1991).[10]CERN Accelerator School, CERN Report 8901，2nd Advanced Accelerator Physics Course, edited by S. Turn-er(1989).[11]于鸿漩，"BEPC的运行和改进”，BEPC国家实验室学术委员会第一次会议报告((1992).[12]I. H. O'neill, Crystal Ball Note No. 202,SLAC(Apr. 7, 1975).[13]楚国柱，中国科学院高能物理研究所硕士论文(1987)，朱国义等，高能物理与核物理，14(1990),8.[14]Ren Yuan Zhu, CALT-68-1767,DOE Research and Development Report(Jan. 18, 1992).

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CHEN Yu, DAI Chang-Jiang, GU Yi-Fan, LEI Zhuan-Heng, LI Jian-Ping, LIU Shu-Dong, SHAO Bei-Bei and TANG Yue-Li. Study on Background Radiation at Beijing Electron Positron Collider and Radiation Damage of High-Z Scintillation Crystals[J]. Chinese Physics C, 1993, 17(8): 673-679.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on Background Radiation at Beijing Electron Positron Collider and Radiation Damage of High-Z Scintillation Crystals

Corresponding author: CHEN Yu,

Institue of High Energy Physics,Academia Sinica,Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1993-08-05

Abstract: A systematic study of radiation backgrounds in the interaction region at the Beijing e⁺e^－ Collider BEPC is carried out for the first time to the needs of particle physics experiment.An effective method to study dynamically the radiation environment of the collider is successfully developed which allows the measurement of the instantaneous radiation dose rate and is distribution for different beam conditions and as a function of time during a quiet luminosity run.The radiation sensitivity of domestic BGO and BaF₂ crystals in the BEPC environment is examined.