Design of High-Voltage Pulse Generator Control System for CSNS Linac RF System

China Spallation Neutron Source (CSNS) is the first neutron source facility in developing countries. it includes a powerful linear proton accelerator, a rapid circling synchrotron, a target station and three neutron instruments[1]. As one of the largest science and technology infrastructure projects in China, CSNS is expected to have positive effects in promoting the sciences, high-tech development and national security. Klystron power supply of CSNS is an important part of linac. High-voltage pulse generator is used for the mod_anode of Klystron. High-voltage pulse generator is composed of 400Hz series-resonant DC high-voltage power supply and solid state modulator. it includes variable frequency power supply (50Hz converted to 400Hz), step-up transformer (0.5kV-6kV), 400Hz series-resonant L/C, energy storage capacitor bank and high-voltage pulse modulator. This paper introduces the structure and principle of the high-voltage pulse generator, Focusing on the introduction of high-voltage pulse generator control system, test and operation of high-voltage pulse generator.