Optimization of MV-class repetitive trigatron switch

Studies were carried out to optimize the operation of a high-voltage and high-repetition-rate trigatron switch, including optimization of the insulation structure, the diameter of the trigger hole and the position of the trigger electrode. Some experiments were performed with the designed switch, and the experimental results were discussed. The experimental results prove that the switch can operate steadily at voltage up to 1.1 MV, peak current up to about 13.8 kA, and repetition rate up to 100 Hz. The switch has been successfully used in a repetitive high-current e-beam accelerator CHP01.