Numerical simulation and experimental study of an electron-optical system of a megawatt gyrotron with step frequency tuning in the range 100–170 GHz |
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Authors: | V E Zapevalov A N Kuftin V K Lygin |
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Institution: | (1) Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia |
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Abstract: | We present the results of numerical simulation and experimental studies of the systems of forming helical electron beams with
different topologies for a 1-MW gyrotron with step frequency tuning in the range 100–170 GHz. We analyze variations in the
beam parameters including the distribution of electrons over the oscillatory velocities, as functions of the beam current
for various accelerating voltages and magnetic fields. The results of experimental studies of a prototype of the multifrequency
gyrotron in the oscillation regime such that the designed optimized electron-optical system forms an intense helical electron
beam with specified parameters in a wide interval of magnetic fields are shown.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 50, No. 9, pp. 773–784, September 2007. |
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