反对称简易十二极场磁铁的设计

doi:10.3969/j.issn.0253-2778.2017.06.003

中国科学技术大学学报 ›› 2017, Vol. 47 ›› Issue (6): 465-473.DOI: 10.3969/j.issn.0253-2778.2017.06.003

反对称简易十二极场磁铁的设计

罗焕丽，王相綦，李想，唐靖宇，杨征，谢凯

1.重庆市肿瘤研究所/医院/癌症中心，重庆 400030；2.中国科学技术大学国家同步辐射实验室，安徽合肥230029；
3.中国科学院高能物理研究所，北京 100049

收稿日期:2016-01-05 修回日期:2016-06-12 出版日期:2017-06-30 发布日期:2017-06-30
通讯作者: 王相綦
作者简介:罗焕丽，女，1986年生，博士.研究方向：加速器物理学和放射物理学. E-mail: huanli@mail.ustc.edu.cn
基金资助:
国家自然科学基金(11045003, 10975150)，重庆市卫生计生委医学科研项目（2015MSXM229）资助.

Design of a novel simplified dodecapole field magnet

LUO Huanli, WANG Xiangqi, LI Xiang, TANG Jingyu, YANG Zheng, XIE Kai

1. Chongqing Cancer Institute/Hospital/Centre, Chongqing 400030, China;
2. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;
3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received:2016-01-05 Revised:2016-06-12 Online:2017-06-30 Published:2017-06-30

摘要/Abstract

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.

关键词: 加速器驱动次临界系统, 非线性场磁铁, 束斑分布变换, 反对称简易十二极场磁铁

Abstract: 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.

Key words: accelerator driven sub-critical system, nonlinear magnets, distribution transformation of beam, simplified dodecapole field magnet

中图分类号:

TL503.8

罗焕丽，王相綦，李想，唐靖宇，杨征，谢凯. 反对称简易十二极场磁铁的设计[J]. 中国科学技术大学学报, 2017, 47(6): 465-473.

LUO Huanli, WANG Xiangqi, LI Xiang, TANG Jingyu, YANG Zheng, XIE Kai. Design of a novel simplified dodecapole field magnet[J]. Journal of University of Science and Technology of China, 2017, 47(6): 465-473.

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反对称简易十二极场磁铁的设计

Design of a novel simplified dodecapole field magnet

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