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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 (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.

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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.