【摘要】 概括了同步光束流测量的特点 ,简单描述了北京正负电子对撞机 (BEPC)现有同步光束流测量系统。根据BEPC改造对同步光束流测量系统提出的最新指标 ,提出了改造原有系统的新方案。对同步光引出镜进行了全新设计 ;采用高分辨率面阵CCD实现束团横截面尺寸测量、束团强度测量和束团位置检测 ;采用条纹相机实现束团纵向长度的测量 ;利用Zemax程序对新方案进行成像质量分析 ,束团纵向长度测量分辨率为 2 ps ,束团横截面尺寸测量分辨率为 2 0 μm。更多还原

【Abstract】 This paper generalizes the properties of a synchrotron light measurement system and describes the present measurement system for BEPC. A novel system is presented according to the latest specifications. The SR extraction mirror was redesigned. The profile and intensity of beam were measured by CCD camera,and the bunch length was measured by streak camera. The imaging quality of the new system was analyzed through Zemax program,the measurement resolution of beam-size and of bunch length being 20μm and 2ps,respectively.更多还原