Experimental study of a 110-GHz/1-MW gyrotron with a single-stage depressed collector

The results of the experimental study of a gyrotron with a single-stage depressed collector are reported. Voltage retarding the electron beam was fed to the tube collector, and the dependence of the RF output power on the solenoidal magnetic field was recorded. A 1-MW output power was reached by increasing the gyrotron efficiency from 40 to 65% with a single-stage depressed collector. GIKOM, Ltd. and Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 41, No. 5, pp. 670–680, May, 1998.