Continuous-wave Gyrotron Traveling Wave Tube Simulation

Based on electron cyclotron maser, gyrotron has good applied foreground in military weapon, millimeter wave radar, communication, exact control and guide and so far. For those reasons, many country has been attaching to the research of gyrotron. As a kind of gyrotron amplifier, the gyro-TWT amplifier has a great potential to be high power microwave source ,especially has a broad application prospects in millimeter wave band, with its virtues such as high power, broad band, and so on, And the gyroklystron will be a suitable power source for high performance millimeter-wave radar, phased array radar, millimeter-wave communications, controlled thermonuclear fusion plasma wave heating systems, just because its'virtues such as high peak power, high average power, high gain, efficient, appropriate bandwidth, etc. Therefore, got a particular attention in the international community.A 35GHz continue-wave gyro-TWT including a Ku-band gyroklystron with four-chamber is researched in this paper, The main works are listed as following:First: Designed the high-frequency structure of gyro-TWT with suitable dielectric loaded in accordance with the frequency, which can inspire the correct model H01 model and effectively inhibited miscellaneous mode and self-excited oscillation.Second: Programming the high-frequency structure of 35GHz continue-wave gyro-TWT in the particle simulation software Magic, find the best structure by an appropriating change about the structure ,the size and location of the dielectric-coated. The result shows an output power of 30.6kW with an electronic efficiency of 36.4% and a gain of 35.7 dB, a 2 GHz 3dB bandwidth is obtained with a 42kV,2A electron beam and a beam velocity of 1.46.Third: The influence of the electronic beam parameters and high-frequency structure parameters on the output power, bandwidth, efficiency, and gain of the gyro-TWT are analyzed separately. and the results will provide the simulation reference for the further development of gyrotron amplifiers in the future.Fourth: Get the structure of clusters and output cavity in the 15GHz four cavity gyroklystron by simulation software HFSS. Fifth: Write the code about the structure of 15GHz four cavity gyroklystron with the simulation software Magic. The result shows: at 15GHZ, a output power of 375kw with an electronic efficiency of about 35.7% and a gain of 39.4 dB, and a 240MHz bandwidth is obtained with a 70kV,15A electron beam and a beam velocity of 1.6...