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W-band gyro-devices using cusp electron gun and helically corrugated interaction region

He, W. and Donaldson, C.R. and Zhang, L. and McElhinney, P. and Phelps, A.D.R. and Ronald, K. and Cross, A.W. (2012) W-band gyro-devices using cusp electron gun and helically corrugated interaction region. In: 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, pp. 1-3. ISBN 978-1-4673-1598-2

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Abstract

Theoretical calculation, numerical simulation and experimental development of W-band gyro-devices with helically corrugated waveguides and a cusp electron gun are presented. The cusp gun generated a 40 keV, 1.5 A axis-encircling electron beam. The maximum output of the gyro-TWA was predicted to be 10 kW with a 3dB frequency bandwidth of 90-100 GHz and a saturated gain of 40 dB. The gyro-BWO output was predicted as 10 kW with a frequency tuning range of 84-104 GHz. These gyro-devices have been operated successfully and the latest experimental results will be presented.