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Design and simulation of a similar to 390 GHz seventh harmonic gyrotron using a large orbit electron beam

Li, Fengping and He, W. and Cross, A.W. and Donaldson, C.R. and Zhang, Liang and Phelps, A.D.R. and , Faraday Partnership in High Power RF (Funder) and , Scottish Universities Physics Alliance (SUPA) (Funder) and , Overseas Research Students Awards Scheme (ORSAS) (Funder) and Ronald, Kevin (2010) Design and simulation of a similar to 390 GHz seventh harmonic gyrotron using a large orbit electron beam. Journal of Physics D: Applied Physics, 43 (15). p. 155204. ISSN 0022-3727

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Abstract

A similar to 390 GHz harmonic gyrotron based on a cusp electron gun has been designed and numerically modelled. The gyrotron operates at the seventh harmonic of the electron cyclotron frequency with the beam interacting with a TE71 waveguide mode. Theoretical as well as numerical simulation results using the 3D particle-in-cell code MAGIC are presented. The cusp gun generated an axis-encircling, annular shaped electron beam of energy 40 keV, current 1.5 A with a velocity ratio alpha of 3. Smooth cylindrical waveguides have been studied as the interaction cavities and their cavity Q optimized for 390 GHz operation. In the simulations similar to 600W of output power at the design frequency has been demonstrated.

Item type: Article
ID code: 26650
Keywords: twt amplifier, maser, accelerator beams, Physics, Surfaces, Coatings and Films, Acoustics and Ultrasonics, Electronic, Optical and Magnetic Materials, Condensed Matter Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
Depositing user: Miss Leonie Airley
Date Deposited: 10 Aug 2010 11:20
Last modified: 27 Mar 2014 09:05
URI: http://strathprints.strath.ac.uk/id/eprint/26650

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