回旋速调管放大器注-波互作用分析
Study on the interaction between electron beam and waves in gyro klystron amplifiers
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摘要: 给出了自洽非线性大信号理论分析方法，在理论分析和高频计算的基础上，建立了回旋速调管放大器注-波互作用计算模型，对其进行数值计算。研究多种参量对放大器输出功率、增益、效率等的影响，通过优化得到了中心频率34 GHz的四腔回旋速调管放大器设计方案。粒子模拟表明：在工作电压65 kV，注电流8 A，电子注横向与纵向速度比为1.5时，输出功率230 kW，带宽230 MHz，电子效率45%，饱和增益33 dB。Abstract: The theoretical analysis about electron beam and waves interaction is presented. Based on the analysis and calculations of RF system and magnetron injection gun, a four-cavity gyro klystron amplifier is designed and optimized. 230 kW peak output power, 45% efficiency, 33 dB saturated gain with 200 MHz bandwidth centered at 34 GHz for a 65 kV, 8 A electron beam with 1.5 the ratio of the transverse velocity to the longitudinal velocity are achieved by simulation. The influences of electron beam and RF system parameters, magnetic field on output power, efficiency, bandwidth and gain are discussed. The numerical simulation results are used to develop a Ka band high power gyro klystron amplifier. It is necessary to increase the peak output power and average power, enhance the band-width, get hi
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