Simulation of Single-Anode Coaxial Magnetron Injection Gun for MW-class Gyrotron at 170GHz

The simulation of single-anode coaxial magnetron injection gun (CMIG) has been presented in this paper. The process of simulation and optimization have been performed by three-dimension electron trace code CST Particle Studio. The simulated result indicates the electron beam is laminar and no reflected electron occurs. The transverse to axial velocity ratio α and transverse velocity spread Δβ_⊥ are 1.3 and 3.75%, respectively.