中文摘要：

在散裂靶或废束站上形成均匀的、形状规则化的束斑分布,是散裂中子源、加速器驱动次临界系统（ADS）等高功率强流质子束应用研究课题中共性的关键技术.目前国际上一般认为采用反对称非线性高阶场磁铁进行打靶束斑均匀化变换是较为合适的.提出了一种新颖的非线性场磁铁——反对称垂直双向聚焦简易十二极场磁铁,该磁铁可以在交叉垂直的两个方向同时聚焦束晕粒子至束核内层或束团中心区域,可以较好地控制束晕;并配合其他反对称高阶场磁铁或阶梯场磁铁,可以在靶上较容易地得到基本均匀分布的近似圆斑束.同时给出了该种磁铁的结构装置及其制造方法.

英文摘要：

Beam distribution with the regular and homogeneous form on spallation target or beam dump is an imperious demand for spallation neutron source（SNS）,accelerator driven sub-critical system（ADS）,and so on.Nowadays,adopting nonlinear antisymmetric high order field is very infusive for distribution transformation of beam.Here,a simplified dodecapole field magnet（SDFM）,well focusing particles in beam halo to inner layer of beam halo or beam core,was introduced.Combining SDFM with antisymmetric sextupole,octupole or decapole magnet can theoretically get approximate uniformly distributed round beam with slightly larger size.The conceptual design,physics structural and its manufacturing method of SDFM was presented.