Large power matching load for high-current electronic accelerator

A large power matching load with a resistance of 20 W was developed. It has been applied to modulating the high current electron beam accelerator based on water-dielectric spiral pulse forming line. When the resistance of the PFL matches the load(which is fixed in a diode), fairly good voltage and current waveforms of the load are obtained: the amplitude of the voltage is 200 kV, the current is 9 kA and the FWHM is 150 ns. According to the parameter of the matching load, the inductance of 2.12×10-8 H and capacitance of 4.51×10-10 F are calculated theoretically. In addition, the process of a square voltage wave feeding the matching load is simulated by Pspice and the distribution of static electric field of the matching load is simulated by ANSYS. The theoretical analysis agrees well wit