中国科学院近代物理研究所磁体工程进展概述(英文)

本文着重论述了中国科学院近代物理研究所目前正在研制的三大磁体工程,它们包括重离子治癌工程(HIMM),强流重离子加速器(HIAF)工程,以及加速器驱动次临界系统(ADS)。在HIMM工程中的常规磁体建设中,着重介绍了联合运用钝化槽与活极头两项技术改善磁场品质的设计方法,并且运用Opera-3D设计软件,对该类高场常规磁体进行了数值分析,进一步地测量了该磁体磁场分布情况,相关的测量结果与数值模拟结果吻合良好。而对于正在处于预研阶段的HIAF工程中的快脉冲超导二极磁体,讨论了超导磁体的前期设计与结构优化技术,包括CACC超导线缆的结构设计,80 K冷屏与线圈盒结构的优化,力-磁耦合结构计算方法等。而在嬗变核废料处理的C-ADS注入器II中,核心部件是具有高磁场(高达7～8 T)的多层复合超导螺线管磁体结构,介绍了其在励磁和失超过程中相关磁学和力学多场实验测试工作。这些相关的设计和测量技术将为中国科学院近代物理研究所自主研制的磁体工程的物理和结构设计提供方法和指导。

Overview about Recent Progress on Magnets in IMP

High- eld conventional magnets and superconducting magnets for three new projects, which can include Heavy Ion Medical Machine (HIMM), High Intensity heavy ion Accelerator Facility (HIAF), and Accelerator Driven sub-critical System (ADS) project, are under construction or design at Institute of Modern Physics (IMP). In conventional magnet of HIMM, air trim slot and removable pole were used jointly for improving the conventional magnets' quality. The measurements of the magnetic eld distribution in the median plane of the working area have been carried out. Results from Opera-3D simulation show good agreement with the measurement data. For superconducting dipole coil prototype in HIAF Project, which is in design phase, the R&D of cable-around-conduit conductor, 80 K thermal shield , the coil case and a smart coupled mechanical analysis method were described. And for SC solenoid magnet of C-ADS Injector-II, which is in test phase, magnetic eld and strain measurement technology at IMP were introduced during excitation and quench. The present results and methodsmay provide some basis experiences on the construction of the magnet at IMP.