Theory and simulation of an 85 GHz quasioptical gyroklystron experiment |
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Authors: | R P Fischer W M Manheimer and A W Fliflet |
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Institution: | (1) Plasma Physics Division, U.S. Naval Research Laboratory, 20375-5000 Washington, D.C. |
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Abstract: | The linear theory used to design a two-resonator 85 GHz quasioptical gyroklystron with a nonuniform magnetic field is presented.
It is shown that a tapered magnetic field in the prebunching resonator has a relatively small effect on the electron bunching
parameter. The effect of velocity spread of the electron beam can be minimized by adjusting the magnetic field strength in
the two resonators. Measured amplifier performance is in good agreement with calculations from the nonlinear multimode simulation
code. Gyrophase bunching of the electrons is preserved over the long drift region (30 radiation wavelengths) even though no
attempt has been made to minimize the velocity spread of the beam. |
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Keywords: | Gyroklystron quasioptical resonators amplifier |
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