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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Design, simulation and experiment of a cusp electron beam for millimeter wave gyro-devices

He, Wenlong and Donaldson, Craig and Li, Fengping and Cross, Adrian and Phelps, Alan and Ronald, Kevin (2009) Design, simulation and experiment of a cusp electron beam for millimeter wave gyro-devices. In: IEEE International Vacuum Electronics Conference, 2008, 2008-04-22 - 2008-04-24.

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Abstract

The design, simulation and experiment of a thermionic cusp electron gun that is to be used for millimeter wave generation will be presented. A cusp gun uses a non-adiabatic magnetic field reversal to obtain azimuthal motion on an electron beam resulting in an annular shaped, axis-encircling beam. The cusp gun was designed to generate a beam of 1.5A at 40kV with an adjustable velocity ratio of up to 3.0. The beam had a simulated axial velocity spread of 7.4% and alpha spread of 10.1%. The beam had an averaged radius of 0.35mm and beam thickness of 0.05mm which is ideal to drive sub-mm wave gyro-devices under investigation.