Improved Synthesis of Quasi-Optical Launchers Used in Injection Locked Gyrotrons

The paper reports the improvement of the methods for the synthesis of launchers for high power gyrotrons at KIT in the period from 2018 to the present. The spectrum reconstruction method has been developed to greatly increase the curvature radii of numerically optimized launcher wall perturbations in order to reduce stray radiation. The method for the design of Denisov-type launchers has been developed for the conversion of co- and counter rotating modes in the same launcher. The design method for hybrid-type launchers has also been improved for the conversion of co- and counter-rotating modes.