轴向加速管的数值模拟
Numerical simulation of the axial acceletron
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摘要: 用二维全电磁数值模拟方法研究了轴向加速管,虽然没有实现理想群聚,但通过加一个中间腔, 大大提高了前两阶谐波电流分量,其中一阶谐波电流调制系数达到了140%,二阶谐波电流调制系数达到了68%。通过对提取腔的设计,可以选择地输出不同的频率,其中一次谐波频率为2.2GHz,输出功率1.25GW,效率9.33%;二次谐波频率为4.4GHz,输出功率0.48GW,效率3.6%。
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关键词:
- 轴向加速管 /
- 理想群聚 /
- 可调频高功率微波脉冲 /
- PIC方法
Abstract: A high power and alterable frequency axial acceletron is studied in this paper. By adding the middle cavity, the RF at the cathode surface is increased and the current modulation coefficient is enhanced, the first order current modulation coefficient is 140% and the second is 68%. By adjusting the output cavity, in terms of the twodimensional fully electronmagnetic particalincell(PIC) simulation, the output power of 1.25GW at 2.2GHz and 480MW at 4.4GHz have been obtained.-
Key words:
- axial acceletron /
- ideal bunching /
- hpm pulse with tunable frequency /
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