The problems of increase in power, efficiency and frequency of gyrotrons for plasma investigations

摘要: Abstract In experiments aimed at the development of gyrotrons for electron-cyclotron (EC) plasma heating, output power 2 MW a wavelength 3 mm was attained. The possibility increase in frequency millimetre-wave gyrotron operation by transition to higher EC harmonics fixed magnetic field use high-selectivity two-resonator cavities is discussed. Outputs over 100 kW were generated second and third frequency. results calculation pulsed systems, capable providing near long-pulsed gyrotrons, are given. principles efficiency means depressed two-stage collector electrons