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High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide

Bratman, V L and Cross, A W and Denisov, G G and He, W and Phelps, A D R and Ronald, K and Samsonov, S V and Whyte, C G and Young, A R (2000) High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide. Physical Review Letters, 84 (12). pp. 2746-2749. ISSN 0031-9007

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Abstract

First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21% relative bandwidth), and an efficiency of 29%, in good agreement with theory.

Item type: Article
ID code: 35598
Keywords: electron cyclotron maser, tube amplifier, twt amplifier, microwave amplifier, microwave devices, microwave generation, gyro-devices, gyro-TWA, gyro-travelling wave amplifier, Plasma physics. Ionized gases, Physics and Astronomy(all)
Subjects: Science > Physics > Plasma physics. Ionized gases
Department: Faculty of Science > Physics
Depositing user: Pure Administrator
Date deposited: 07 Nov 2011 13:34
Last modified: 08 Sep 2017 05:15
URI: https://strathprints.strath.ac.uk/id/eprint/35598
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