L波段相对论速调管的3维粒子模拟
Three dimensional particle-in-cell simulation of L-band relativistic klystron amplifier
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摘要: 采用高频场软件对输入腔、中间腔和输出腔的高频特性进行冷腔分析。利用3维粒子模拟软件对L波段强流相对论速调管进行整体建模，模拟分析了整管工作情况，并讨论了3维模型中输入、输出耦合结构的引入对结果的影响。模拟参数为：电子束电压500 kV，电流5 kA，微波频率1.3 GHz，输出平均功率600 MW，效率约25%。Abstract: This paper conducted the simulation study in 3 dimensions. The cold-cavity analysis was performed for input, idler and output cavities by high frequency field software. The whole L-band RKA tube was modeled by three dimensional particle-in-cell method, and special attention was put onto the influence of the input and output coupling structures. The optimized parameters in the simulation are as follows: the electron energy is 500 keV, the current is 5 kA, the working frequency is 1.3 GHz, the mean output power is 600 MW and the efficiency is about 25%.
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