60 GHz gyrotron development program. Quarterly report No. 7, January-March 1981

The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design, early construction, and test phases are discussed. A peak output power of over 200 kW was obtained with over 50% efficiency at pulse durations of 20 ..mu..s.