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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Official URL: https://doi.org/10.1103/PhysRevLett.84.2746

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.

Author(s):	Bratman, V L, Cross, A W ORCID: https://orcid.org/0000-0001-7672-1283, Denisov, G G, He, W ORCID: https://orcid.org/0000-0001-7018-0527, Phelps, A D R ORCID: https://orcid.org/0000-0002-1100-1012, Ronald, K ORCID: https://orcid.org/0000-0002-8585-0746, Samsonov, S V, Whyte, C G ORCID: https://orcid.org/0000-0002-5431-2443 and Young, A R ORCID: https://orcid.org/0000-0002-3494-1242
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:	22 Nov 2019 05:14
URI:	https://strathprints.strath.ac.uk/id/eprint/35598
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