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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, Monterey, CA.

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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.

Item type: Conference or Workshop Item (Paper)
ID code: 30855
Keywords: cusp electron beam , gyro-devices , vacuum electronics, Plasma physics. Ionized gases
Subjects: Science > Physics > Plasma physics. Ionized gases
Department: Faculty of Science > Physics
Depositing user: Pure Administrator
Date Deposited: 06 May 2011 12:57
Last modified: 24 Jul 2015 01:33

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