Research on The Optimization Method of Fast Start-Up Electronic Gun in Traveling-Wave Tube

This paper presents an optimization method for the fast start-up of electronic gun, which can shorten the start-up time of the electronic gun. By analyzing the heat conduction formula and simulating the heat flow during the start-up period of the cathode structure of the original electron gun, an optimization method for shorten the start-up time is presented. After temperature distribution analysis and heat flow analysis of the optimized structure, sample preparation and fast start-up test of electron gun are carried out. The experimental results are in agreement with the simulation results. The optimization method greatly reduces the start-up time of the electron gun, which proves the feasibility of shortening the electron gun start-up time by increasing the heat transfer path.