Broadband gyro-TWA with thermionic cusp gun: simulations and comparison with experiment

Whyte, C.G. and Young, A.R. and Rowlands, D.H. and Robertson, C.W. and Phelps, A.D.R. and He, W.L. and Cross, A.W. and Ronald, K. IEEE , ed. (2008) Broadband gyro-TWA with thermionic cusp gun: simulations and comparison with experiment. In: IEEE International Vacuum Electronics Conference, 2008, 2008-04-22 - 2008-04-24. (http://dx.doi.org/10.1109/IVELEC.2008.4556431)

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Abstract

The latest results of experimental investigations of an X-band gyro-TWA using a cusp gun and a helically corrugated interaction region are presented. Results will be presented from two experimental investigations, one using a 150 kV, 35 A beam from a cold field emission cusp gun and one with a 150 kV, 70 A beam from a thermionic cusp gun. Designs for a gridded thermionic cusp gun currently under construction will also be presented. Numerical investigations of the gyro-TWA have been completed and used to predict the saturated and small signal gain of several gyro-TWA devices. These predictions are compared with the experimental results obtained.