Highly Efficient Gyrotron with Multi-Stage Recuperation of Residual Electron Energy

Abstract

The results of complex modeling of physical processes in a gyrotron of moderate power in the 4-mm wavelength range have been presented. Methods for improving the quality of the helical electron beam and gyrotron electronic efficiency based on the optimization of the electric field distribution in the cathode region have been implemented. The design of a collector with four-stage recuperation of residual beam energy based on the method of spatial separation of electrons in crossed azimuthal magnetic and axial electric fields has been developed. A gyrotron total efficiency equal to 71.8% has been achieved by improving the quality of the electron beam and efficient energy recuperation in the collector region.