Improved step-by-step chromaticity compensation method for chromatic sextupole optimization  

作　　者：刘刚文 白正贺 贾启卡 李为民 王琳 

机构地区：[1]National Synchrotron Radiation Laboratory, University of Science and Technology of China

出　　处：《Chinese Physics C》2016年第5期87-91,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11175182,11175180)

摘　　要：The step-by-step chromaticity compensation method for chromatic sextupole optimization and dynamic aperture increase was proposed by E. Levichev and P. Piminov （E. Levichev and P. Piminov, 2006）. Although this method can be used to enlarge the dynamic aperture of a storage ring, it has some drawbacks. In this paper, we combined this method with evolutionary computation algorithms, and proposed an improved version of this method. In the improved method, the drawbacks are avoided, and thus better optimization results can be obtained.The step-by-step chromaticity compensation method for chromatic sextupole optimization and dynamic aperture increase was proposed by E. Levichev and P. Piminov （E. Levichev and P. Piminov, 2006）. Although this method can be used to enlarge the dynamic aperture of a storage ring, it has some drawbacks. In this paper, we combined this method with evolutionary computation algorithms, and proposed an improved version of this method. In the improved method, the drawbacks are avoided, and thus better optimization results can be obtained.

关 键 词：chromatic sextupole chromaticity compensation dynamic aperture OPTIMIZATION particle swarm optimization 

分 类 号：TL594[核科学技术—核技术及应用] TP18[自动化与计算机技术—控制理论与控制工程]