Abstract
Summary form only given, as follows. Summary form only given. The experimental results from a wide-band high power 140 GHz quasioptical gyro-TWT will be presented. The gyroTWT amplifier is designed to generate 100 kW at 140 GHz with 38 dB gain and 3% saturated bandwidth. The interaction structure is a highly overmoded quasioptical open waveguide namely, a confocal waveguide which has the capability of up to 100 kW CW operation in the W-band (94 GHz) when built to industrial standards. The other novel features of the experiment include a quasioptical diffraction sever with a high average power capability. The latest experimental results in microsecond pulsed operation include peak power of 30 kW for a 68 kV, 6A beam and 10 kW of power over a 2 GHz bandwidth in unsaturated operation.
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