Picture of UK Houses of Parliament

Leading national thinking on politics, government & public policy through Open Access research

Strathprints makes available scholarly Open Access content by researchers in the School of Government & Public Policy, based within the Faculty of Humanities & Social Sciences.

Research here is 1st in Scotland for research intensity and spans a wide range of domains. The Department of Politics demonstrates expertise in understanding parties, elections and public opinion, with additional emphases on political economy, institutions and international relations. This international angle is reflected in the European Policies Research Centre (EPRC) which conducts comparative research on public policy. Meanwhile, the Centre for Energy Policy provides independent expertise on energy, working across multidisciplinary groups to shape policy for a low carbon economy.

Explore the Open Access research of the School of Government & Public Policy. Or explore all of Strathclyde's Open Access research...

Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun

Cross, A.W. and He, W. and Phelps, A.D.R. and Ronald, K. and Whyte, C.G. and Young, A.R. and Robertson, Craig and Rafferty, E.G. (2007) Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun. Applied Physics Letters, 90 (25). p. 253501. ISSN 0003-6951

Full text not available in this repository.Request a copy from the Strathclyde author

Abstract

Experimental operation of a gyrotron traveling wave amplifier with a helically corrugated waveguide using a thermionic cathode electron gun is presented. The coupling between the second harmonic cyclotron mode of the gyrating electron beam and the radiation occurred in the region of near infinite phase velocity over a broad frequency band. With an axis-encircling electron beam of pitch factor of ∼ 1.2, energy of 185 keV, and current of 6.0 A, the amplifier achieved an output power of 220 kW, saturated gain of 24 dB, saturated bandwidth of 8.4 to 10.4 GHz, and an interaction efficiency of 20%.