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

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Gang-Wen Liu, Zheng-He Bai, Qi-Ka Jia, Wei-Min Li and Lin Wang. Improved step-by-step chromaticity compensation method for chromatic sextupole optimization[J]. Chinese Physics C, 2016, 40(5): 057002. doi: 10.1088/1674-1137/40/5/057002
Gang-Wen Liu, Zheng-He Bai, Qi-Ka Jia, Wei-Min Li and Lin Wang. Improved step-by-step chromaticity compensation method for chromatic sextupole optimization[J]. Chinese Physics C, 2016, 40(5): 057002.  doi: 10.1088/1674-1137/40/5/057002 shu
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Received: 2015-11-03
Revised: 2015-12-22
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    Supported by National Natural Science Foundation of China(11175182, 11175180)

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

    Corresponding author: Zheng-He Bai,
  • 1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
Fund Project:  Supported by National Natural Science Foundation of China(11175182, 11175180)

Abstract: 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.

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