The Calculation and Design of a 140GHz MW-class gyrotorn at IECAS

A 140GHz megawatt-class Gyrotron project has been developed in IECAS (the institute of electronics, Chinese Academy of Sciences), with the purpose of providing high power microwave source for ITER program. This paper presents an overall design schematic of 140GHz, 1MW gyrotron with a gradually tapered cavity. As the TE
28,8
mode has been used successfully in the MW-class gyrotron, it is selected as the operating mode here. With some optimized parameters, an output power of 1.12MW is obtained based on the calculation with beam accelerating voltage of 80kV, beam current of 40A and an overall efficiency of 33.81 %.