Radial current high power dummy load for characterizing the high power laser triggered transformer-type accelerator

摘要

A radial-current aqueous resistive solution load was applied to characterize a laser triggered transformer-type accelerator. The current direction in the dummy load is radial and is different from the traditional load in the axial. Therefore, this type of dummy load has smaller inductance and fast response characteristic. The load was designed to accommodate both the resistance requirement of accelerator and to allow optical access for the laser. Theoretical and numerical calculations of the load’s inductance and capacitance are given. The equivalent circuit of the dummy load is calculated in theory and analyzed with a PSPICE code. The simulation results agree well with the theoretical analysis. At last, experiments of the dummy load applied to the high power spiral pulse forming line were performed; a quasisquare pulse voltage is obtained at the dummy load. © 2010 American Institute of Physics Article Outline INTRODUCTION STRUCTURE OF THE DUMMY LOAD THEORETICAL CALCULATIONS Output waveform calculation Dummy load parameter calculation NUMERICAL SIMULATIONS Numerical calculations of capacitance and inductance Circuit simulation of the output pulse Circuit simulation of pulse modulator with the dummy load EXPERIMENTAL RESULTS Capacitance discharge experiments High power pulse accelerator experiments CONCLUSIONS