紧凑型回旋加速器直杆束流探针的标定  

Calibration of linear beam probe for compact cyclotron

作　　者：姚凯 刘素梅[1] 吴昱城 丁开忠[3] 周健 胡越 YAO Kai;LIU Su-mei;WU Yu-cheng;DING Kai-zhong;ZHOU Jian;HU Yue(School of Engineering,Anhui Agricultural University,Hefei 230036;Hefei CAS lon Medical and Technical Devices Co.,Ltd.,Hefei 230088;Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031)

机构地区：[1]安徽农业大学工学院,安徽合肥230036 [2]合肥中科离子医学技术装备有限公司,安徽合肥230088 [3]中国科学院合肥物质科学研究院,安徽合肥230031

出　　处：《机械设计》2022年第11期26-30,共5页Journal of Machine Design

基　　金：2020年安徽省重点开发计划资助项目(202004h7020034)。

摘　　要：文中研究的紧凑型回旋加速器将质子加速到200 MeV,最大引出流强约为400 nA。在加速器调试过程中,需要对束流在加速器内的轴向和径向参数进行测量,直杆束流探针是用于获取束流流强和位置信息的主要装置。直杆束流探针在加速器内偏心安装,在装配过程中需对探针位置进行标定。文中介绍了束流探针在加速器上偏心安装的标定方法,给出了束流探测靶头在加速器径向R的位置与探针传动杆前进距离c的关系式,给出了束流探测靶头在轴向z变形下垂距离与探针传动杆前进距离c的关系式,并对标定方法进行了验证。The compact cyclotron developed by Hefei CAS Ion Medical and Technical Devices Co., Ltd.(HFCIM) can provide proton beam with an acceleration of up to 200 MeV, with the maximum beam of about 400 nA. During beam commissioning of the 200 MeV compact cyclotron, it is necessary to measure the beam axial and radial distribution. The linear beam probe is the main device used to provide information on beam intensity and position. It is installed eccentrically on the cyclotron, and the probe position needs to be calibrated during the assembly stage. In this article, efforts are made to introduce a method for calibrating the linear beam probe. The relationship between the radial position R of the beam target head and the forward distance c of the drive rod is worked out. In addition, the relationship between the sag distance of the beam target in the axial direction z and the forward distance c of the drive rod is presented. Finally, the calibration method is verified.

关 键 词：位置标定 束流测量 直杆束流探针 回旋加速器 

分 类 号：TH124[机械工程—机械设计及理论]