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The design and simulation of a thermionic cusp-based axis-encircling electron beam for use in harmonic gyro-devices

By: Rafferty, E.G.; Ronald, K.; Cross, A.W.; He, W.; Phelps, A.D.R.;

2004 / IEEE / 0-7803-8490-3

Description

This item was taken from the IEEE Conference ' The design and simulation of a thermionic cusp-based axis-encircling electron beam for use in harmonic gyro-devices ' A thermionic cusp gun is proposed for use in a 3 MW second harmonic X-band gyro-TWA with a helically corrugated waveguide interaction region. The passage of an electron beam through a non-adiabatic magnetic field reversal converts part of the electron beam's axial velocity into axis-encircling transverse velocity. The paper presents the design and simulation of this cusp based electron beam forming system, yielding a 10 MW, 83 A axis encircling beam with an axial velocity spread /spl Delta/v/sub z/<16% suitable for use in harmonic gyro-devices.