The Luminosity Monitor of Beijing Spectrometer (BES)

Ni Hutting; Zhou Haushi; Jiang Chunhua; Guo Hongfei; Xu Jiangou; Zhu Qiming; Wang Fang; Liu Wei; Li Jiahua

Chinese Physics C> 1990, Vol. 14> Issue(S3) : 237-248

The Luminosity Monitor of Beijing Spectrometer (BES)

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

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Abstract：
In this paper, we present the design and construction of the luminosity monitor of BES, its main features of the detectors and the functions of the read-out circuits and data acquisition system. In October of 1988,-the luminosity monitor provided the first colliding luminosity of Beijing Electron-Positron Collider (BEPC), and the initial luminosity was 5×10²⁸/cm²·s. During the later colliding experimental operations, the luminosity monitor also provided the colliding luminosities, which were in agreement with those calculated with the operation parameters of the BEPC.

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Ni Hutting, Zhou Haushi, Jiang Chunhua, Guo Hongfei, Xu Jiangou, Zhu Qiming, Wang Fang, Liu Wei and Li Jiahua. The Luminosity Monitor of Beijing Spectrometer (BES)[J]. Chinese Physics C, 1990, 14(S3): 237-248.

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Received: 1989-10-18

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