Simulation of a MW level 140GHz Gyrotron Operating in TE28,8 Mode by CST PIC Code

This paper reports our simulation of the starting process of oscillation in a MW level 140 GHz gyrotron operating in TE28,8 mode using CST Particle Studio. The model of the gyrotron is setup using the similar parameters in Ref[1]. An 1D description of the magnetic field is used. The results of interaction are shown and give a lot of physical details of the starting progress. The wave-particle power transfer suggests a good agreement to Ref[1].