Phys. Rev. Lett. 67, 520 (1991)https://ireap.umd.edu/10.1103/PhysRevLett.67.5201991
Wesley
Lawson
Jeffrey P.
Calame
Bart
Hogan
Peter E.
Latham
M.E.
Read
Victor L.
Granatstein
Martin
Reiser
Charles D.
Striffler
Journal ArticlePlasma, Accelerator, and Nuclear PhysicsExperimental studies of amplification in a two-cavity X-band gyroklystron are reported. The system utilizes a thermionic magnetron injection gun at voltages up to 440 kV and currents up to 190 A in 1-μs pulses. Optimum performance is achieved by tapering the magnetic-field profile. Peak powers of 20 MW in the TE01 mode at 9.87 GHz are measured with calibrated crystals and with methanol calorimetry. Resultant efficiencies are in excess of 31% and large-signal gains surpass 26 dB. The experimental results are in good agreement with simulated results from a partially self-consistent, nonlinear, steady-state code.
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