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Based on the general theory of mode coupling and principle of the mode converter with cosinusoidal profile, we design a transition section for 94GHz gyrotron oscillator. Numerical calculation and three-dimension electromagnetic simulation for the suggested transition section are made. The results show that the 94GHz-TE01-mode transition section has transmission efficiency 98.8% and low reflection...
In this paper, a numerical simulation model was developed to simulate the helium plasma in a cylindrical hollow cathode based on a three-dimensional, time-dependent and self-consistent fluid model. Accurate solution through the continuity equations, electron energy balance equation and continuity equations with reasonable boundary conditions to get the discharge characteristics which are very important...
X-band dual frequency coaxial relativistic backward wave oscillator is suggested. The properties of dual frequency RBWO are investigated and optimized with electromagnetic simulation method. The results shown that steady dual frequencies microwave power outputs are generated with the operating voltage 590KV, beam current 9.4KA and the external guiding magnetic 0.7T. The microwave frequencies are 9...
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