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This paper presents the conceptual design of a W-band high-harmonic gyrotron oscillator with a permanent magnet system. Mode selection, cavity design, beam-wave interaction calculations, electron-optical system, and quasi-optical mode converter output system are described. The gyrotron operates at the third harmonic of the electron cyclotron frequency with the beam interacting with a ...
A W-band reflective gyrotron backward wave oscillator (Gyro-BWO) is fabricated to systematically study the physics of competition between backward wave and forward wave. Two cavities, namely a single cavity and complex cavity, will be tested. Theoretical investigation indicates that the competition in a complex cavity is much improved and is capable of generating much stronger efficient radiation.
A Ka-band gyrotron traveling wave amplifier operating in the TE11 circular mode has been presented. The effects of the parameters such as input power, driver frequency and velocity ratio on the performance of the gyro-TWT ares discussed. The simulation results show that the gain and the bandwidth of the designed Ka-band gyro-TWT is about 54.0 dB and 2.5 GHz with 3 dB bandwidth respectively. The peak...
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