高峰值功率多注速调管电子光学系统的研究
Electro-optical system in high peak power multi-beam klystron
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摘要: 分析了存在于高峰值功率多注速调管电子光学系统中的问题。采用间接设计方法设计了S波段50 MW多注速调管的电子光学系统。设计中采用分立屏蔽筒结构解决电子枪区聚焦场的旁轴对称问题。利用2维电子光学软件EGUN、3维电磁模拟软件MAFIA和PIC粒子模拟程序对电子轨迹进行了模拟，结果表明：分立屏蔽筒结构可以获得较好的旁轴对称场，电子光学系统的电子轨迹比较理想。Abstract: Problems in the electro-optical system in high peak power multi-beam klystrons are analyzed. The electro-optical system of an S-band 50 MW klystron is designed by using an indirect method. Respective shield barrels are used to generate side-symmetrical magnetic field in the cathode-anode area. With the combination of 2D electron-optical code EGUN, 3D electromagnetic code MAFIA and 3D PIC (particle-in-cell) code, the electro-optical system is modeled in detail. The result shows that the shield barrels could generate side-symmetrical magnetic field, and that the track of electrons is perfect.
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Key words:
- electro-optical system /
- multi-beam klystron /
- high peak power /
- electron gun /
- electron beam
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