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A high power 390 GHz harmonic gyrotron based on cusp electron gun

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6 Author(s)
Li, F. ; Dept. of Phys., Univ. of Strathclyde, Glasgow, UK ; He, W. ; Phelps, A.D.R. ; Cross, A.W.
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The design and simulation of a harmonic gyrotron based on a cusp electron gun is presented. The gyrotron is operated at the 7th electron cyclotron harmonic with an output frequency of ~390 GHz and mode pattern of TE71. A large orbit electron beam with energy of 40 keV, beam current of 1.5A and an adjustable pitch alpha from 1 to 3 from a cusp gun is used to drive the beam-wave interaction. Smooth cylindrical waveguide and slotted structures have been studied as interaction cavities. Theoretical analysis and numerical simulation results of these structures will be presented.

Published in:

High Power Particle Beams (BEAMS), 2008 17th International Conference on

Date of Conference:

6-11 July 2008