中能X光机触发系统  

Trigger system of the middle energy X-ray device

作　　者：何安[1,2] 郭帆 康军军[1,2] 夏明鹤 丁瑜[1] 周良骥 耿力东[1,2] 卫兵 袁建强[1,2] 谢卫平[1,2] He An;Guo Fan;Kang Junjun;Xia Minghe;Ding Yu;Zhou Liangji;Geng Lidong;Wei Bing;Yuan Jianqiang;Xie Weiping(Institute of Fluid Physics,CAEP,Mianyang 621900,China;Key Laboratory of Pulsed Power,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900 [2]中物院脉冲功率科学与技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2022年第11期100-106,共7页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51907181)。

摘　　要：介绍了中能X光机装置触发系统研制和相关实验结果,触发系统包括主机6个支路激光开关的触发和主机放电的触发。其中6个支路的触发由6台YAG四倍频激光器完成,主机放电电触发系统由1台YAG四倍频激光器来触发。实验结果表明:每台激光器出光时间抖动σ小于等于0.3 ns,激光开关导通延迟时间约25 ns,抖动σ小于等于1.2 ns,电触发系统中激光与触发器输出电压之间的时间抖动σ为0.5 ns,匹配负载上电压大于120 kV,前沿约28 ns,脉宽150 ns。中能X光机在杆箍缩二极管负载上获得最大输出为4.2 MV/100 kA的电脉冲,电压脉冲半高宽约55 ns,输出的X射线时间抖动σ为3.4 ns。实验结果表明触发系统具备对6个支路精确调节和控制的能力,确保了中能X光机装置的高可靠性。This paper introduces the trigger system of the middle energy X-ray device and experimental results.The trigger system controls triggering of laser-switches in six modules and the electric trigger part.Each switch is triggered by one laser.Seven lasers could be adjusted stand-alone.The test results show that the time jitter of laser was less than 0.3 ns and the time jitter of the laser-switch was less than 1.2 ns.For electric trigger system,the voltage of the matching load was 120 kV,the rising time was about 28 ns,the pulse width(FWHM)was 150 ns,and the time jitter was less than 0.5ns.The middle energy X-ray device could produce a maximum output voltage and current of about 4.2 MV/100 kA and the pulse width(FWHM)was 150 ns.The time jitter of X-ray was less than 3.4 ns in the middle energy X-ray device.The experimental results show that the trigger system was able to adjust the six modules accurately,which improves reliability of the middle energy X-ray device.

关 键 词：激光触发开关 触发 时间抖动 YAG激光器 

分 类 号：O56[理学—原子与分子物理] TL503[理学—物理]