电磁聚焦移象系统中聚焦磁场的逆设计

An Inverse Design of Magnetic Focussing Coil for Electrostatic and Magnetic Imaging

作者建立了数学模型,用最优化方法对系统中的聚焦磁场进行了设计,计算结果与所要求的磁感应强度的轴上分布相当一致。文中给出了实验测量和验证。

An inverse design of magnetic focussing coil for electrostatic and magnetic imaging is investigated in this paper. For the inverse problem of designing magnetic coil, a mathematical model has been developed, an optimization method called BFGS has been introduced and an universal programme using FORTRAN language has been drawn up in the paper. On the basis of computational results, a magnetic focussing coil with four variable magnifications and a prototype tube of electrostatic and magnetic imaging without image rotation have been made, the results show that the computational and measuring values of axial magnetic induction coincide with the theoretical ones. It fully proves that the theory of electrostatic and magnetic imaging without image rotation and the method of inverse design described here are correct.