Design and Test of the Main Discharge Circuit for a Modular Integrated Laser ICF Power Supply

Using pulse thyristor as the discharge switch, a capacitive pulsed power supply main discharge circuit is designed for the requirements of the pulsed xenon lamp in the laser inertial confinement fusion(ICF) device. The use of capacitor charging and discharging modular integrated method and synchronous triggering of multiple sets of thyristors enables high current output of the pulsed power supply, which can avoid excessive current flow through the thyristors and eliminate current-sharing measures of the thyristors. Applying the fast switching MOSFET and magnetic induction of pulse transformer, a set of high gate trigger system is developed to control the synchronous conduction of the thyristors of each module. Practical operation indicates that the pulse power supply can provide specific required pulse current and energy for the pulsed xenon lamp.