Upgrade on the Barrel Shower Counter at BES

Zhou Li; Que Youkun; Cui Xiangzong; Fang Jian; Gu Weixin; HanShiweng; Hu Haiming; Huang Guangshun; Li Peiqin; Li Xinhua; Liu Yan; Mao Zepu; Qi Nading; Qi Xiangrong; Sun Hansheng; Wang Linzhou; Xiong Weijun; Xue Shengtina; Xu Zhijing; Yu Chunxu; Zhang Yu; Zhao Haiwen; Zhao Zhengguo

Chinese Physics C> 1999, Vol. 23> Issue(11) : 1049-1053

Upgrade on the Barrel Shower Counter at BES

Institute of High Energy Physics, ne Chinese Academy of Sciences, Beijing 100039

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Abstract：
An upgrade has been Performed on the barrel shower counter at Beijing spectrometer to improve the Performance of this detector. For Bhabha events, the energy resolution is better than 21% √<span style="border-top: 1px solid; padding-top: 0px;">E</span>(E in GeV) and the spatial resolution along z axis is smaller than 3cm.

References

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Bai, Jingzhi et al. Nucl. Instr. Meth., 1994, A334:3192 Bai Jingzhi et al. Phys. Rev. Lett., 1992, 69:3021 3 Bai Jingzhi et al. Phys. Rev. Lett., 1995, B355:374 4 Bai Jingzhi et al. Phys. Rev. 1997, D56:37795 Bai Jingzhi et al. High Energy Phys. and Nucl. Phys. (in Chinese), 1996, 20:97(白景芝等.高能物理与核物理,1996,20:97) 6 Zhou Yuehua et al. High Energy Phys. and Nuclear Phys. (in Chinese), 1989, 13:973(周月华等.高能物理与核物理,1989,13:973)7 Mao Zepu, et al. High Energy Phys. and Nuclear Phys. (in Chinese), 1996, 20:1073(毛泽普等.高能物理与核物理,1996,20:1073)

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Zhou Li, Que Youkun, Cui Xiangzong, Fang Jian, Gu Weixin, HanShiweng, Hu Haiming, Huang Guangshun, Li Peiqin, Li Xinhua, Liu Yan, Mao Zepu, Qi Nading, Qi Xiangrong, Sun Hansheng, Wang Linzhou, Xiong Weijun, Xue Shengtina, Xu Zhijing, Yu Chunxu, Zhang Yu, Zhao Haiwen and Zhao Zhengguo. Upgrade on the Barrel Shower Counter at BES[J]. Chinese Physics C, 1999, 23(11): 1049-1053.

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Received: 1998-09-13
Revised: 1900-01-01

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