Optimization of the magnetic focusing system can decrease the radial magnetic induction and improve the electron beam quality.
通过对磁聚焦系统进行优化设计，外层电子注轨迹得到明显改善。
2
We discussed the stability of both radial movement and axis movement of charged particle in infirm focusing magnetic field and obtained the term of stability.
我们探讨了弱聚焦磁场中带电粒子轴向和径向运动的稳定性问题，得到稳定性条件。
3
A virtual modal is developed by focusing on the type of JBP-63 electro-hydraulic control radial piston pump as to fit its working conditions.