Abstract
A high-power x-band coaxial relativistic backward wave oscillator has been conceptually designed and analyzed. The TMon dispersion relations in the coaxial corrugated cylindrical waveguide used in the device was calculated. MAGIC,an electronmagnetic particle-in-cell code, is being used to investigated the nonlinear beam-wave interaction and other design optimization issues. Preliminary simulation results shows that the coaxial BWO can generate 2. 2 GW peak power microwave at 10. 15GHz in the TM02 mode driven by a 600-KV 20-KA electron beam, the peak power efficiency is about 18%.
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