Two-dimensional numerical simulation for gun of TWT

Summary form only given. This paper presents the numerical simulation method by software MAFIA, TAU and EGUN to calculate the electron-gun of traveling-wave tube. The simulation result are good consistency with part experiment data. The average calculation precise may be less than 5%. It proves that these electro-magnetic software are capable of simulating the electron-gun, making some research for computer simulation to satisfy practical engineering design demand in computation precise. The calculation time is compared for these software.