Three-dimensional numerical simulation of 55 GHz double anode magnetron injection gun

The initial design of magnetron injection gun was analyzed based on the theory of the adiabatic compression and conservation of angular momentum. A series of initial parameters of 55 GHz double anode magnetron injection gun were obtained by Matlab programming. Independent research and development of three-dimensional particle simulation software CHIPIC was used to carry out numerical simulation. The obtained simulation data were analyzed and optimized. High-performance electron beam was obtained with a ratio of transverse velocity to axial velocity of 1.44 and a maximum velocity spread of 5.8%. The beam could meet the requirements of 55 GHz gyrotron oscillator tube.