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Co-axial Ka-band free electron maser using two-dimensional feedback

Phelps, Alan and Konoplev, Ivan and MCGRANE, Paul Edward and Cross, Adrian and He, Wenlong and Whyte, Colin and Ronald, Kevin and Thumm, MK and Ginzburg, N.S. and Peskov, N.Y. and Sergeev, A.S. and Abe, DK and Nusinovich, GS (2006) Co-axial Ka-band free electron maser using two-dimensional feedback. In: High energy density and high power RF. AIP conference proceedings . American Institute of Physics, Melville, pp. 238-245. ISBN 0735402981

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The first successful experimental studies of microwave radiation from a co-axial Free-Electron Maser (FEM) based on two-dimensional (2D) distributed feedback [1-3] have been recently conducted. This paper contains a description of the experimental set-up and the results obtained. The high-power pulsed power supply and high-current accelerator (HCA) developed and used to drive the FEM are discussed. The results of the experimental study of the FEM operating in the Ka frequency band are presented and compared with theoretical predictions.