北京谱仪亮度监测器

THE LUMINOSITY MONITOR OF BES

本文报道了北京谱仪亮度监测器的设计、建造,探测器的性能指标,读出线路及数据获取系统的工作原理.1988年10月,监测器给出北京正负电子对撞机(BEPC)的首次对撞亮度,起始对撞亮度值为5×10^(23)/cm^2·s.在以后的对撞实验中给出的对撞亮度与根据加速器运行参数估计的数值符合得较好.

In this paper, we present the design and construction of the luminosity monitor, the main features of the detectors, and the functions of the read-out circuits and data acquisition system of the Beijing spectrometer (BES). In October of 1988, the luminosity monitor provided the first colliding luminosity of BEPC, and the initial luminosity was 5×10^(28)/cm^2. sec. During the later colliding experimental operation, the luminosity monitor also provided the colliding luminosities, which were in good agreement with those calculated by the operation parameters of the BEPC.