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磁铁设计对于等时性回旋加速器极为关键。磁场分布需要满足粒子等时性加速和粒子径向、轴向聚集要求,同时避免危险的横向共振。提出了一种计算机辅助的自动化磁铁设计、建模和修正的方法,该方法在基于Python混合编程的虚拟样机集成设计环境中实现。详细描述了利用3维电磁场仿真软件TOSCA和自主开发的粒子束跟踪软件PTP对磁铁的优化过程,并给出了一个16 MeV负氢紧凑型回旋加速器的主磁铁设计实例。
Magnet design is critical for isochronous cyclotrons. The magnetic field distribution needs to satisfy the isochronous acceleration of the particles and the radial and axial aggregate requirements of the particles, while avoiding dangerous transverse resonances. A computer-aided method for the design, modeling and correction of automated magnets was proposed. This method was implemented in a virtual prototype integrated design environment based on Python mixed programming. A detailed description of the optimization of the magnet using the three-dimensional electromagnetic field simulation software TOSCA and the PTP beam tracking software PTP is given in detail. A design example of the main magnet of a 16 MeV negative hydrogen compact cyclotron is given.