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500 kV亚纳秒脉冲X光机研制

张小强 赵光义 周林 姜占兴 梁川 李名加 王真

张小强, 赵光义, 周林, 等. 500 kV亚纳秒脉冲X光机研制[J]. 强激光与粒子束, 2018, 30: 025004. doi: 10.11884/HPLPB201830.170389
引用本文: 张小强, 赵光义, 周林, 等. 500 kV亚纳秒脉冲X光机研制[J]. 强激光与粒子束, 2018, 30: 025004. doi: 10.11884/HPLPB201830.170389
Zhang Xiaoqiang, Zhao Guangyi, Zhou Lin, et al. Design of 500 kV sub-nanosecond pulsed X-ray generator[J]. High Power Laser and Particle Beams, 2018, 30: 025004. doi: 10.11884/HPLPB201830.170389
Citation: Zhang Xiaoqiang, Zhao Guangyi, Zhou Lin, et al. Design of 500 kV sub-nanosecond pulsed X-ray generator[J]. High Power Laser and Particle Beams, 2018, 30: 025004. doi: 10.11884/HPLPB201830.170389

500 kV亚纳秒脉冲X光机研制

doi: 10.11884/HPLPB201830.170389
详细信息
    作者简介:

    张小强(1986—),男,硕士,工程师,从事脉冲功率技术研究;zxqhfut@sina.com

    通讯作者:

    周林(1986—),男,博士,副研究员,从事等离子体物理和脉冲功率技术研究;zhoulin_2003@163.com

  • 中图分类号: TM832

Design of 500 kV sub-nanosecond pulsed X-ray generator

  • 摘要: 高能量亚纳秒脉冲X射线可用于精确定标辐射探测系统的时间响应特性和探测灵敏度,对于脉冲辐射场诊断技术研究具有重要意义。研制了一种小型化、可移动的亚纳秒脉冲X射线源,装置占地区域尺寸为1.2 m×40 cm,重142 kg。设计了双锥形绕组同轴结构变压器,采用新颖的三谐振变压技术,将纳秒脉冲形成线充电至520 kV,通过油介质自击穿开关放电,输出370 kV,3.8 ns的高压脉冲。设计了多级过匹配传输线提升输出电压,并利用油介质peaking-chopping开关进行脉冲压缩,产生了峰值520 kV、半高宽0.5 ns、功率1.8 GW的高压脉冲。基于Child-Langmuir定理,设计了刀刃阴极X光管,在520 kV电压下的运行阻抗为150 Ω,管前20 cm处的X射线峰值能量注量率约为1×1016 MeV·cm-2·s-1,累积照射量为4.1 mR。
  • 图  1  500 kV亚纳秒脉冲X光机总体结构

    Figure  1.  Schematic of generator

    图  2  纳秒-皮秒双模X光辐射装置

    Figure  2.  Photo of X-ray generator

    图  3  双锥形绕组变压器实物图及外筒去除后的准三谐振变压系统

    Figure  3.  Pulsed transformer using double conical windings and triple resonance transformer system without shell

    图  4  准三谐振变压系统电路图

    Figure  4.  Circuit diagram of triple resonance transformer

    图  5  准三谐振变压的实验波形与仿真波形对比

    Figure  5.  Voltage waveform of triple resonance pulse transformer

    图  6  亚纳秒脉冲产生系统

    Figure  6.  System of sub-nanosecond pulse generator

    图  7  Peaking-chopping开关结构剖面图

    Figure  7.  Side view of peaking-chopping switch

    图  8  X射线二极管结构图

    Figure  8.  Schematic of diode's structure

    图  9  GD-40P型光电管

    Figure  9.  GD-40P photo tube

    图  10  亚纳秒电脉冲和辐射脉冲测量结果

    Figure  10.  Voltage waveforms of sub-nanosecond pulse and radiation

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出版历程
  • 收稿日期:  2017-09-29
  • 修回日期:  2017-10-23
  • 刊出日期:  2018-02-15

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