4 MV静电加速器调试中出现的问题及解决方案

孙振武; 李玉晓; 姜胜南; 李涛; 郑世全; 刘柱华; 霍裕平

强激光与粒子束, 2005, 17 (7): 1117, 网络出版: 2006-04-28

4 MV静电加速器调试中出现的问题及解决方案

Debugging of 4 MV electrostatic accelerator

论文大纲

孙振武 ¹李玉晓 ¹姜胜南 ¹李涛 ¹郑世全 ¹刘柱华 ²霍裕平 ¹

作者单位

¹ 郑州大学物理工程学院,河南,郑州,450052

² 中国科学院高能物理研究所,北京,100080

静电加速器加速管离子源离子束 Electrostatic accelerator Accelerator tube Ion source Ion beam

摘要

4 MV静电加速器由高压系统、离子源及束流系统、控制系统和气体系统四部分组成.调试中出现了离子源不起弧、加速管破裂、控制系统失灵和输电带输电能力降低等技术问题,分析了出现这些问题的原因,然后分别采取了相应的措施加以解决:变换工作流程,在每次关机前先把引出电压降为零,开机时等离子源起弧后再把引出电压升到预定值;对过渡法兰进行车加工,重新封装;对高压端的控制设备采取屏蔽措施,在输入、输出端使用TVS二极管,对控制软件进行抗干扰设计;对绝缘气体进行循环干燥等.调试出了流强为100 μA、能量在3 MeV以上的稳定质子流.

Abstract

The 4 MV electrostatic accelerator consists of four parts, a high voltage system, an ion source and beam transmission system, a control system and a gas system. Some technical problems arose during the debugging of the accelerator. The ion source did not produce arc. The accelerator tube cracked. The control system was out of order. The transporting capacity of the charge belt degraded. The corresponding reasons were analyzed and some measures were adopted to solve the problems. The drawing voltage was raised to its predetermined position after the ion source produced arc and should be reduced to zero before turning off the accelerator. Transition flange was lathed and the accelerator tube was re-assembled. The control equipment at high voltage was shielded. TVS diodes were installed at the input and output ends. Some measures against disturbance were adopted in software. The insulation gas was dried circularly. Finally, a stable 100 μA and 3 MeV proton beam was ejected from the accelerator.

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孙振武, 李玉晓, 姜胜南, 李涛, 郑世全, 刘柱华, 霍裕平. 4 MV静电加速器调试中出现的问题及解决方案[J]. 强激光与粒子束, 2005, 17(7): 1117. SUN Zhen-wu, LI Yu-xiao, JIANG Sheng-nan, LI Tao, ZHENG Shi-quan, LIU Zhu-hua, HUO Yu-ping. Debugging of 4 MV electrostatic accelerator[J]. High Power Laser and Particle Beams, 2005, 17(7): 1117.

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