Picture of a black hole

Strathclyde Open Access research that creates ripples...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of research papers by University of Strathclyde researchers, including by Strathclyde physicists involved in observing gravitational waves and black hole mergers as part of the Laser Interferometer Gravitational-Wave Observatory (LIGO) - but also other internationally significant research from the Department of Physics. Discover why Strathclyde's physics research is making ripples...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

A cusp electron gun for millimeter wave gyrodevices

Donaldson, C. R. and He, W. and Cross, A.W. and Li, Fengping and Phelps, A.D.R. and Zhang, Liang and Ronald, Kevin and Robertson, Craig and Whyte, Colin and Young, Alan (2010) A cusp electron gun for millimeter wave gyrodevices. Applied Physics Letters, 96 (14). ISSN 0003-6951

[img]
Preview
PDF (strathprint26572.pdf)
strathprint26572.pdf - Final Published Version

Download (332kB) | Preview

Abstract

The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a "smooth" magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC.