研制了一种新型重复频率兆伏级多级多通道开关,该开关为准均匀场结构,采用9组辐射状电极,每组电极分别安装在各自的环状母盘上,母盘以一定间隔串联固定在开关阴阳极间隙轴向的绝缘杆上。实验结果表明:在无吹气条件下,该开关可以在电压1.1~1.5 MV、峰值电流15kA和重频50Hz下稳定运行,击穿抖动小于10ns,在平板二极管负载上输出脉冲前沿小于10ns。开关结构简单,无需使用吹气系统,可形成多个火花通道。 A new multi-level multichannel switch of mega-volt level with repetition frequency was developed. The switch is a quasi-uniform field structure. Nine groups of radial electrodes are used. Each electrode is mounted on its own ring- The series is fixed on the insulating rod in the axial gap between the anode and the cathode of the switch. The experimental results show that under no-blow condition, the switch can operate stably at 1.1 ~ 1.5 MV, peak current 15kA and repetition frequency 50Hz. The breakdown jitter is less than 10ns and the output pulse front is less than 10ns on the flat-panel diode. Switch structure is simple, without blowing system, can form multiple spark channels.