PRPM聚焦多注速調(diào)管電子光學(xué)系統(tǒng)的研究
Study on Electron Optics System of Multi-beam Klystron with PRPM Focusing
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摘要: 該文采用邊界元( BEM )軟件TAU對(duì)具有周期反轉(zhuǎn)永磁(PRPM)聚焦結(jié)構(gòu)的多注速調(diào)管電子光學(xué)系統(tǒng)進(jìn)行研究。通過(guò)編寫(xiě)程序增加TAU讀入三維磁場(chǎng)數(shù)據(jù)的功能,從MAFIA中導(dǎo)入三維磁場(chǎng),分別模擬了處于徑向不同位置處電子注的軌跡。通過(guò)對(duì)磁聚焦系統(tǒng)進(jìn)行優(yōu)化設(shè)計(jì),外層電子注軌跡得到明顯改善。使用軟件TAU進(jìn)行三維模擬可以大大縮短模擬時(shí)間,便于多注速調(diào)管電子光學(xué)系統(tǒng)的工程設(shè)計(jì)。
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關(guān)鍵詞:
- 多注速調(diào)管; TAU; 邊界元; 多注電子光學(xué)
Abstract: Boundary Element Method(BEM) is applied to simulate electron optics system of multi-beam klystron with PRPM focusing in this paper. The function of importing 3D magnetic fields from MAFIA is added to TAU. Magnetic induction distribution along Z axis at different radial positions is given out and the electron trajectories are analysed. Optimization of the magnetic focusing system can decrease the radial magnetic induction and improve the electron beam quality. Less time will be needed than other codes, TAU become a very useful tool for multi-beam electron gun design. -
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