合肥光源直线加速器BPM系统的研制和测量  

Research and Measurement of BPM System at HLS LINAC

作　　者：李吉浩[1] 孙葆根[1] 何多慧[1] 刘功发[1] 卢平[1] 曹涌[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029

出　　处：《高能物理与核物理》2007年第1期96-100,共5页High Energy Physics and Nuclear Physics

基　　金：高水平大学建设重点科研项目资助课题(KY2901)国家863计划项目基金(863-410-8-2)资助~~

摘　　要：合肥光源直线加速器新改造的BPM系统已经安装,并做了在线的束流位置测量实验．本文介绍该BPM系统的结构、作为系统核心部分的信号处理模块以及离线标定的实验结果和在线应用的实验结果,表明该BPM系统具有不小于40dBm的动态范围,不大于100μm的束流位置分辨率,水平方向和垂直方向分别具有1．61dB/mm和1．51dB/mm的灵敏度．校正铁强度与BPM读数关系的实验,表明该BPM系统能正确地反映束流的位置变化情况,并且确定了校正铁在水平方向和垂直方向的校正系数分别为0．46mm/A和0．58mm/A,校正铁设置为默认值时该BPM处的束流中心水平位置和垂直位置分别为0．83mm和-0．57mm．BPM system newly designed at HLS Linac has been installed and applied in beam based experiments This paper introduces the structure of BPM system, signal processing module, mapping results and t results of beam based experiment. The BPM system has a dynamic range of not less than 40dBm, beam position resolution of less than 100μm, horizontal sensitivity of 1.61dB/mm and vertical sensitivity of 1.51dB/mm. The results of experiment between corrector strength and BPM shows that the newly designed BPM system can acquire the beam positions information correctly, and the horizontal and vertical correction coefficients of the correctors are 0.46mm/A and 0.58mm/A respectively, and the horizontal and vertical beam positions at BPM are 0.83mm and -0.57mm respectively with the default value of correctors.

关 键 词：束流位置探测器(Beam Position Monitor BPM) 动态范围 标定 分辨率 校正铁 

分 类 号：O572.211[理学—粒子物理与原子核物理]