医用重离子回旋加速器径向探针系统  

Radial probe detector system in the cyclotron of Heavy Ion Medical Machine

作　　者：李敏[1,2] 李维龙 康新才 陈玉聪[1] 毛瑞士 赵铁成 冯永春[1] 周凯 董金梅[1] 宋海宏 Li Min;Li Weilong;Kang Xincai;Chen Yucong;Mao Ruishi;Zhao Tiecheng;Feng Yongchun;Zhou Kai;Dong Jinmei;Song Haihong(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学,北京100049 [3]兰州理工大学,兰州730050

出　　处：《强激光与粒子束》2023年第10期112-119,共8页High Power Laser and Particle Beams

基　　金：National Natural Science Foundation of China(11905271,12105336)。

摘　　要：武威和兰州重离子加速器使用回旋加速器作为其注入器。回旋加速器为该装置的同步加速器提供10μA的碳离子束流以满足其物理需求。而径向探针则是安装在回旋加速器内部实现束流流强和圈图测量的重要束诊元件。径向靶头上的束流信息经前端电子学拾取后会进一步进入数据采集系统,最终实现回旋加速器的束流流强和圈图测试。其中,径向探针的前端电子学采用皮安表,数据采集系统基于实时操作系统和FPGA技术。介绍了径向探针的机械结构设计,并分析了探头有无水冷结构的热结构;描述了控制系统软硬件架构,可以实现10 kHz的数据和位置信息的同步采集。最后,还介绍了探针机械和控制系统的实验室测试和验收标准以及在束测量结果。The cyclotron is designed as the injector of the Heavy Ion Medical Machines(HIMMs)in Wuwei city and Lanzhou city,China.It provides 10μA carbon ion beams to fulfill the accumulation requirement in the following synchrotron.Four picoammeters acquire the beam current signals gathered by the radial detectors;meanwhile,the beam time structure is measured with Field Programmable Gate Arrays and a real-time operating system.This paper introduces the mechanical design of the radial detectors and further provides the thermal structure analysis result of probe tips with and without water cooling.Moreover,the hardware and software architecture of the control system for this detector is described,including the motion control and data acquisition system,which can implement simultaneous acquisition of beam current data and position at more than 10 kS/s.At last,the laboratory test and acceptance scheme of both mechanical and control systems are listed,and the beam current and turn pattern measurement results at HIMMs are presented in this paper.

关 键 词：HIMM 回旋加速器 径向探针 模块化 OPC UA 

分 类 号：TL56[核科学技术—核技术及应用]