研制了基于SOS的胡杨200和胡杨700脉冲功率源.给出了胡杨200和胡杨700的电路原理、组成结构和实验波形.介绍了在SOS脉冲功率源上开展的高重复频率强流电子束产生、长寿命阴极实验、绝缘介质的高重复频率击穿实验和低引导磁场无箔二极管等实验研究进展.经测试,胡杨200在2 kHz重复频率、负载阻抗200 Ω下,输出电压200 kV,脉冲宽度约35 ns,平均输出功率大于10 kW;在300 Hz条件下可连续运行.胡杨700同样为全固态脉冲功率源,其设计指标:输出电压700 kV,电流5 kA,脉冲宽度约40 ns;经初步调试在150 Ω电阻负载上单脉冲输出指标达到660 kV,4.4 kA,脉宽约70 ns.

This paper summarizes recent results of the study and development of high-power repetitive nanosecond generators employing a semiconductor opening switch(SOS). The SOS-based pulsed power generator(SPG200, SPG700) has been developed and tested in Northwest Institute of Nuclear Technology. Some applications are carried out on the SOS-based generator, such as the high-frequency diode, research of long lifetime cathode, insulating research of breakdown. An experimental system of foilless diode with low guiding magnetic field is designed on the generator S-5N. The SPG200 delivers pulses with FWHM of 35 ns and amplitude up to 200 kV at 2 kHz repetition rate into a load in burst mode. The average output power is 13 kW. The generator can work at 300 Hz continuously. The SPG700 is designed by the same technique. The output specifications of the generator are as follows: output voltage 700 kV, output current 5 kA, pulse duration(FWHM) 40 ns. Now the generator is being tested, which delivers pulses with 660 kV,4.4 kA, 70ns(FWHM) on the resisitance load.