Analytical computation of magnetic field in coil-dominated superconducting quadrupole magnets based on racetrack coils
作者机构：China Spallation Neutron SourceInstitute of High Energy PhysicsChinese Academy of Sciences1 Zhongziyuan RoadDongguan 523000China Institute of High Energy PhysicsChinese Academy of Sciences19B Yuquan RoadBeijing 100049China University of Chinese Academy of SciencesBeijing 100049China
出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)
年 卷 期：2024年第35卷第4期
页 面：119-135页
核心收录：
学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术]
基 金：supported in part by the National Key Research and Development Program of China(No.2022YFA1603402) in part by the National Natural Science Foundation of China(No.11875272)
主 题：Superconducting quadrupole magnet Racetrack coil Multipole field Genetic algorithm Magnetic design
摘 要：Currently,three types of superconducting quadrupole magnets are used in particle accelerators:cos 2θ,CCT,and ***,all three coil configurations have complex spatial geometries,which make magnet manufacturing and strain-sensitive superconductor applications *** with the three existing quadrupole coils,the racetrack quadrupole coil has a simple shape and manufacturing process,but there have been few theoretical *** this paper,the two-dimensional and three-dimensional analytical expressions for the magnetic field in coil-dominated racetrack superconducting quadrupole magnets are *** analytical expressions of the field harmonics and gradient are fully resolved and depend only on the geometric parameters of the coil and current ***,a genetic algorithm is applied to obtain a solution for the coil geometry parameters with field harmonics on the order of 10^(-4).Finally,considering the practical engineering needs of the accelerator interaction region,electromagnetic design examples of racetrack quadrupole magnets with high gradients,large apertures,and small apertures are described,and the application prospects of racetrack quadrupole coils are analyzed.
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