초고속 Marx 발전기 개발에 관한 연구

Abstract

This paper dealt with a new battery-powered ultra-fast Marx generator to apply to pulse-power equipment. The final objection of this thesis is to provide design and construction rules for the Marx generator having characteristics of 80J and 800kV.

To develop the type of Marx generator, I prefabricated a prototype generator with 20ns risetime, 500kV output, and 10kA discharge current. The generator has ten 4.2nF/50kV capacitor banks and stably works under a pressure of 3kgf/㎠ SF6.

From the analysis on the prototype generator, I was able to decide a trigger circuit with high repetition rates, gas pressure ranges, and pulse measurement sensors.

The finally developed Marx generator can produce 84J and 800kV with 20ns risetime. It consists of 16-4.2nF/50kV capacitor banks connected with isolated spark gaps. Each bank is completely modular and can be easily unplugged for maintenance. The trigger circuit can operate at a repetition of 1pps. and N2 instead of SF6 gas in insulation system of the enclosure was used to improve repetition rates of the triggering.

Further studies on low-impedance tubes, such as virtual cathode oscillator(Vircator) and the Magnetically Insulated Line Oscillator(MILO), should be followed to apply the Marx generator widely to ultra-wideband(UWB) radars, electronic weapons, and plasma radiation sources.