【作者】 张金海； 孙江； 胡杨； 蔡丹； 呼义翔； 罗维熙； 尹佳辉； 孙剑锋； 周文渊； 唐飞； 张世健； 曹新宇；

【Author】 ZHANG Jinhai;SUN Jiang;HU Yang;CAI Dan;Hu Yixiang;LUO Weixi;YIN Jiahui;SUN Jianfeng;ZHOU Wenyuan;TANG Fei;ZHANG Shijian;CAO Xinyu;State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology;

【机构】 强脉冲辐射环境模拟与效应全国重点实验室西北核技术研究所；

【摘要】 真空系统是大型脉冲功率装置重要的附属设备之一,"云光一号"加速器（4 MV,350 kA）采用磁感应电压叠加器的技术路线,其中感应腔的绝缘堆栈、次级磁绝缘传输线和二极管负载均工作于真空环境,真空环境优劣直接关系到加速器的运行安全和试验效率。针对感应腔绝缘堆栈表面积大、内壁阳极氧化范围广、次级传输线跨度长（～6 m）,以及腔体容积大（5 m³）等真空设计难点,同时兼顾复杂电磁环境和辐射环境的考量,确定了分布式的真空系统和远程控制系统设计方案,最终实现"云光一号"加速器的真空指标如下:腔体内的真空度在非保压条件下2 h内达到5×10^-3 Pa;保压条件下30 min内达到5×10^-3 Pa,有力地保障了加速器的试验运行效率。更多还原

【Abstract】 Vacuum system is one of the important accessory equipment of large pulse power accelerator.To achieve a high voltage,Yunguang-1 accelerator uses 4 inductively isolated modules arranged in series(each unit adds a voltage above 900 kV),where the insulation stack of the induction cavity,the secondary magnetic insulation transmission line,and the diode all work in a vacuum environment.The vacuum is directly related to the operation safety and test efficiency of the accelerator.In response to design difficulties of the vacuum system,such as large area of the insulation stack for the induction cavity,wide range of inner wall anodic oxidation,long span of secondary transmission lines(～6 m) and large cavity volume(5 m~3),while considering complex electromagnetic and radiation environments,a distributed layout and remote control system design has been determined.The vacuum index of Yunguang-1 accelerator is ultimately achieved as follow:the vacuum inside the cavity reaches 5 ×10~3 Pa within 2 hours under non-pressure maintaining condition,while within 30 minutes under pressure maintaining condition,which effectively ensures the experimental operation efficiency of the accelerator.更多还原