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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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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.