扩展互作用谐振腔的模拟分析
Simulation of extended interaction oscillator
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摘要: 分析了扩展互作用谐振腔的工作原理、特点以及工作过程，并利用PIC粒子模拟程序对其进行了数值模拟，分析了阴极电压、电子注半径、谐振腔个数以及谐振腔周期长度对输出功率、频率及转换效率的影响。结果表明：当阴极电压为28.5~30.0 kV时，谐振腔能正常工作；当电子注半径为1.4 mm，谐振腔个数为4，阴极电压为29 kV时输出功率和转换效率最大，输出功率为128 kW，频率12.9 GHz，转换效率达37.93%；输出频率随谐振腔周期长度的变小而增大。Abstract: The basic theories, the characteristics and the woking process of the extended interaction oscillator(EIO) were introduced. A type of EIO was simulated using PIC. The effect of the cathode voltage, the radius of the electron beam, the number and the period length of the resonant cavity on the output power, frequency and conversion efficiency were analyzed. The simulation results shown that when the working voltage is 28.5～30 kV, the resonant cavity starts to oscillate. When the input cathode voltage is 29 kV, the current is 10 A, and when the radius of electronic beam is 1.4 mm and the number of period is 4, the output power is 128 kW, the frequency is 12.9 GHz, and the efficiency is up to 37.93%.
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Key words:
- extended interaction oscillator /
- thz band /
- synchronization /
- beam bunching
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