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Design and experiment of a broadband W-band gyro-TWA based on a helically corrugated interaction region

He, W. and Donaldson, C. R. and Zhang, L. and McElhinney, P. and Yin, H. and Garner, J. and Ronald, K. and Cross, A. W. and Phelps, A. D.R. (2017) Design and experiment of a broadband W-band gyro-TWA based on a helically corrugated interaction region. In: 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017. IEEE, Piscataway, NJ.. ISBN 9781509060481

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    Abstract

    The design and experiment of an upgraded W-band gyrotron travelling wave amplifier (gyro-TWA) based on a helically corrugated interaction region is presented. The upgrade of the input coupler, output window, corrugated output mode converter enabled a measured output power of a few kWs from the gyro-TWA with an unsaturated gain of up to 40 dB and a 3 dB frequency bandwidth of at least 5.5 GHz.