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In this paper, the simulation and design of a diode type magnetron injection gun (MIG) for a W-band CW gyrotron oscillator is presented. The simulation of the MIG, operating at the voltage of 55kV and the current of 4A, is finished with the help of a trajectory program EGUN. The simulation results indicate that the velocity ratio with velocity spread of less than 2.5% is 1.43.
In this paper, the design of a magnetron injection gun (MIG) with a single-anode built for W-band gyrotron oscillator is presented. The simulation of the MIG is finished with the help of a trajectory program EGUN. The simulation results indicate that the velocity ratio with velocity spread of less than 4% is 1.41.
A method for control of electric field distribution in the near-cathode region of a magnetron-injection gun has been developed. The possibility to improve quality of the helical electron beam by regulated non-uniformities of electric field is studied experimentally and using computer modeling.
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...
Trajectories of backscattered electrons have been studied, in respect of those electrons that transit through the rf cavity toward the MIG gun. They get reflected before they reach the cathode. On the return journey they can get reflected again from the collector region and thus get trapped. The transit back and forth through the rf cavity is a potential source of parasitic oscillations. An initial...
A high power gyrotron traveling-wave amplifier operating in the low-loss TE01 mode has been designed. The amplifier will be driven by a 70-kV, 10-A electron beam with a pitch angle (vperp/v//)of unity and velocity spread of 3~5% generated by a double-anode magnetron injection gun (MIG).The amplifier is predicted by nonlinear theory simulation code to generated 180 kW at 35 GHz with 25 efficiency,...
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