7 MeV医用回旋加速器磁铁的物理设计  

Physics Design of a 7 MeV Medical Cyclotron Magnet

作　　者：杜洋 何小中[1] 赵良超[1] 张罡 马超凡[1,2] 张森 DU Yang;HE Xiao-zhong;ZHAO Liang-chao;ZHANG Gang;MA Chao-fan;ZHANG Sen(Institute of Fluid Physics,CAEP,Mianyang Sichuan 621900,China;Sichuan Longevous Beamtech Co.LTD.,Mianyang Sichuan 621000,China)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900 [2]四川玖谊源粒子科技有限公司,四川绵阳621000

出　　处：《核电子学与探测技术》2021年第6期998-1004,共7页Nuclear Electronics & Detection Technology

基　　金：核能开发基金(科工二司2017-1341)资助。

摘　　要：介绍了用于正电子核素生产的7 MeV医用回旋加速器磁铁的设计方法。采用分段函数垫补法进行等时性调谐,通过对调谐响应函数的性质进行分析,确定了调谐算法的镶条切割限值。对磁铁设计结果进行了闭合轨道的束流动力学计算,设计结果满足轴向聚焦要求,具有较大横向接受度,等时性误差小于0.2%,在半径310 mm处引出可达到设计能量7 MeV。A 7 MeV medical cyclotron magnet for positron nuclide production was designed.The design method of the magnet was introduced in detail.The isochronous tuning is carried out by using the piecewise function padding method,and the cutting limit of the inlay is determined by analyzing the properties of the tuning response function.The beam dynamics calculation of the closed orbit is carried out for the design result of the magnet.The design result satisfies the requirement of axial focusing and has a large lateral acceptance.The isochronous error is less than 0.2%.The design energy of 7 MeV can be achieved at the radius of 310 mm.

关 键 词：回旋加速器 磁铁 等时性 闭合轨道 

分 类 号：TL542.1[核科学技术—核技术及应用]