Resonator with a curved wall for a gyrotron

The influence of the curvature of a resonator wall on the frequency, quality factor, efficiency, current, optimum magnetic field, and mode competition is studied within the framework of a simple resonator model for a gyrotron operating in the TE/sub 0.31/ mode at 150 GHz, with an output power of 200 kW. It is shown that the curvature of the resonator wall has basically a negative effect. If the curvature is large enough ( delta R>or=0.06 mm in the convex case and delta R>0.02 mm in the concave case), the gyrotron operation can deteriorate seriously.<
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