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CSNS／RCS引出系统快脉冲冲击磁铁的磁场仿真和结构设计
Magnetic field simulation and structure design of fast extraction Kicker for CSNS/RCS
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摘要: 中国散裂中子源快循环同步加速器引出系统快脉冲冲击磁铁，由分组安装于三个真空箱内的8台磁铁组成。对冲击磁铁进行磁场仿真和结构设计，并使用仿真软件进行优化。仿真结果表明：磁铁中心场60％宽度内的磁场均匀性达到±0．7％，满足物理设计要求。同时，对两台磁铁间距大小与互感的关系进行模拟计算和分析。磁铁结构设计中，针对原样机中出现的铁芯不能可靠固定问题，进行修改和完善，并且设计出了一种简单实用的多螺栓滑动支撑结构，可使多台磁铁平稳推入真空箱内，同时完成多台磁铁的准直和固定。Abstract: Three kicker assemblies including eight pulsed magnets will be used in the rapid circle synchrotron of China Spall-ation Neutron Source.Magnetic field simulation and structural design of the kicker magnet is presented.The results of OPERA-3D simulation show that the central field integral of magnets meet the physical requirements by choosing a suitable magnet coil structure.The field uniformity in 60% magnet width is ±0.7%.The relation between the distance of two magnets and the mu-tual inductance are simulated.Compared to the prototype,the magnet structure is modified and improved in design to increase the mechanical stability.A simple and practical design of multi-bolt sliding support structures which is used to push six magnets into the vacuum chamber is introduced.
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