Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

Experimental study of coaxial free-electron maser based on two-dimensional distributed feedback

Konoplev, I.V. and McGrane, P. and He, W. and Cross, A.W. and Phelps, A.D.R. and Whyte, C.G. and Ronald, K. and Robertson, C.W. (2006) Experimental study of coaxial free-electron maser based on two-dimensional distributed feedback. Physical Review Letters, 96 (3). 035002/1-035002/4. ISSN 0031-9007

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

Abstract

The first experimental study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) distributed feedback is presented. A new type of cavity formed with coaxial 2D surface photonic band gap structures was used. The FEM was driven by a large diameter (7 cm), high-current(500 A), annular electron beam of energy 475 keV. By tuning the amplitude of the undulator or guide magnetic field, modes associated with the different band gaps of the 2D structures were excited. The Ka-band coaxial FEM generated 15 MW of radiation with a 6% conversion efficiency, in excellent agreement with theory.