介绍了针对中国散裂中子源(CSNS)的直线到环输运线(LRBT)所设计的条带式束流位置测量(BPM)系统, 探头方案以条带式电极为基础进行物理设计及参数优化, 并通过机械标定减少机械加工误差, 电子学选用商用数据处理方案。此系统在加速器实际运行中有效提供位置信息, 对在线测量数据采用奇异值分解(SVD)进行分析, 根据分析结果, 对束流轨道测量的精度达到预期设计目的, 满足物理调束需求。

This paper introduces the stripline beam position monitor system we designed for the linac to ring beam transport(LRBT) of China Spallation Neutron Source(CSNS). The system’s physical design and parameter optimization of monitor are done based on stripline type, mechanical calibration is done to reduce error caused by machining, and the electronic system is using a commercial data processing system. The system gives effective position data in actual accelerator running, and an analysis of online measurement data is done with SVD method. According to the analysis result, accuracy of beam orbit measurement has reached the intended design goal and can meet physical tuning needs.