Abstract
An experimental study of the gain between two half-wavelength, 5.7-GHz TM/sub 110/ mode pillbox cavities, separated by a quarter-wavelength drift space, and powered by a 170-A, 500-keV electron beam immersed in an 8.1-kG magnetic field is reported. These cavities constitute the first section of a planned multicavity deflection system, whose purpose is to spin up an electron beam to high transverse momentum ( alpha identical to upsilon perpendicular to / upsilon /sub z/>or=1) for injection into the output cavity of a frequency-doubling magnicon amplifier. A gain of approximately 15 dB was observed in the preferred circular polarization, at a frequency shift of approximately -0.18%, in the opposite circular polarization, at a frequency shift of approximately +0.06%. These results are in good agreement with theory. >
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