The paper reviews some problems of high power gyrotron, especially related with mode selection and provision of stability of high-efficiency operating mode in oversized resonators and possible solution. Results of calculation and experimental study of gyrotrons operating in a wide frequency range and at the 1 MW power level are presented. Effects of beam potential depression in gyrotrons, effects of mode interaction (competition and cooperation) and methods of mode selection including multibeam and complex cavity systems are presented. The dependence of gyrotron parameters on the beam current and magnetic field is analyzed. The experimental results are compared with the calculated data.
展开▼
