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In this paper initial experimental results of a W-band gyrotron travelling wave amplifier (gyro-TWA) which is upgraded to operate at a high pulse repetitive frequency of 2 kHz will be presented. The gyro-TWA based on a helically corrugated interaction region and cusp electron beam source can output a maximum power of 5 kW at its centre frequency of ∼94 GHz with an instantaneous frequency bandwidth...
In this paper gyrotron travelling wave amplifiers (gyro-TWAs) based on helically corrugated interaction regions will be presented. Their operating principle and the first experiment in X-band will be reviewed. The present experiment in W-band using a cusp electron beam source with the capability of a high pulse repetition frequency of 2 kHz will also be presented. The design and performances of the...
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