高重复频率猝发多脉冲加载下交联聚苯乙烯真空沿面闪络特性  

Vacuum surface flashover characteristics of cross-linked polystyreneunder high repetition rate burst multi-pulse loading

作　　者：黄子平[1] 李远[1] 邓旭 李逢[1] 李欣[1] Huang Ziping;Li Yuan;Deng Xu;Li Feng;Li Xin(Key Laboratory of Pulsed Power,Institute of Fluid Physics,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,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》2024年第5期99-104,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(12275255)。

摘　　要：基于高重复频率强流多脉冲加速器的应用需求,针对交联聚苯乙烯(XLPS)材料在猝发多脉冲下的真空沿面闪络特性开展了实验研究。采用放置于平板电极中的XLPS圆台样品,在脉宽120 ns的单个脉冲和间隔500 ns的三脉冲加载下开展了真空沿面闪络实验,通过对实验平台和实验规范的优化设计,有效提升了实验效率和数据有效性,观测到了样品发生真空沿面闪络前的试样电压顶降现象和前序脉冲闪络对后续脉冲的显著影响,获得了XLPS材料在相应条件下真空沿面闪络的统计数据。在实验基础上,对XLPS材料在高重复频率多脉冲加载下的真空沿面闪络特性进行了分析,为高重复频率多脉冲加速器的绝缘设计提供了实验依据。Based on the requirement of high current multi-pulse accelerator,the surface flashover characteristics of cross-linked polystyrene(XLPS)material under burst multi-pulse in vacuum were studied experimentally.Vacuum surface flashover experiments were carried out with XLPS samples placed in flat electrodes under single pulse and three pulses with interval of 500 ns.Special phenomena such as continuous decrease of equivalent impedance of vacuum surface before flashover and continuous maintenance of flashover channel after pulse end were observed,and statistical data of vacuum surface flashover of XLPS materials under corresponding conditions were obtained.On the basis of experiments,the flashover characteristics of XLPS in vacuum under high repetition rate multi-pulse loading are analyzed,which provides experimental basis for insulation design of high repetition rate multi-pulse accelerator.

关 键 词：高重复频率多脉冲 交联聚苯乙烯 真空沿面闪络 

分 类 号：TL503.3[核科学技术—核技术及应用]