Design and Construction of the Barrel Shower Counter in the Beijing Spectrometer

Zhou Yuehua; Lu Changguo; Gu Weixin; Lu Weida; Que Youkun; Li Peiqin; Hao Wei; Zhou Li; Zhu Guosheng; Zheng Xiaoming; Chen Wenjun

Chinese Physics C> 1990, Vol. 14> Issue(S2) : 105-113

Design and Construction of the Barrel Shower Counter in the Beijing Spectrometer

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

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Abstract：
The design and construction of the Barrel Shower Counter (BSC) for the Beijing Spectrometer (BES) are described in detail. The BSC is a 3.85 m long cylinder with an inner diameter of 2.5 m and an outer diameter of 3.4 m, constructed on a 4.23 m long aluminum spool with a diameter of 2.5 m and a thickness of 3 cm. It is composed of 23 layers of lead (0.5 r.l. each as absorber) and 24 layers of self-quenching streamer (SQS) tubes, weighing 40 tons and with a solid angle coverage of 80% of 4π.

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Zhou Yuehua, Lu Changguo, Gu Weixin, Lu Weida, Que Youkun, Li Peiqin, Hao Wei, Zhou Li, Zhu Guosheng, Zheng Xiaoming and Chen Wenjun. Design and Construction of the Barrel Shower Counter in the Beijing Spectrometer[J]. Chinese Physics C, 1990, 14(S2): 105-113.

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Received: 1989-05-24

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