Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm
Finding a high quality of lattice that simultaneously meets low beam emittance performance and acceptable dynamic aperture is a challenging task for the storage ring-based light source, especially for the next generation storage ring which is characterized with ultralow beam emittance. This paper pr...
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American Physical Society
2011-09-01
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Series: | Physical Review Special Topics. Accelerators and Beams |
Online Access: | http://doi.org/10.1103/PhysRevSTAB.14.094001 |
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doaj-9d47a90f7ef84c36ab8416731801bbe22020-11-25T02:40:09ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022011-09-0114909400110.1103/PhysRevSTAB.14.094001Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithmWeiwei GaoLin WangWeimin LiFinding a high quality of lattice that simultaneously meets low beam emittance performance and acceptable dynamic aperture is a challenging task for the storage ring-based light source, especially for the next generation storage ring which is characterized with ultralow beam emittance. This paper presents an alternative method, based on the concept of genetic algorithm, to simultaneously optimize the beam emittance and dynamic aperture for low emittance lattice. Instead of analyzing the nonlinear indicators extracted from the high order nonlinear map, the algorithm can globally optimize the nonlinear performance by the direct dynamic aperture tracking result. So this method is more straightforward and efficient than analyzing the nonlinear driving terms. In order to illustrate this method, the quadrupole and sextupole strengths of a five-bend-achromatic lattice are simultaneously optimized by nondominated sorting genetic algorithm II (NSGA-II). Finally, the optimal linear optics for ultralow emittance lattices with better dynamic aperture are obtained. The result shows that the algorithm is particularly useful for the low emittance lattice design, where the beam emittance and the dynamic aperture always conflict with each other.http://doi.org/10.1103/PhysRevSTAB.14.094001 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Weiwei Gao Lin Wang Weimin Li |
spellingShingle |
Weiwei Gao Lin Wang Weimin Li Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm Physical Review Special Topics. Accelerators and Beams |
author_facet |
Weiwei Gao Lin Wang Weimin Li |
author_sort |
Weiwei Gao |
title |
Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm |
title_short |
Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm |
title_full |
Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm |
title_fullStr |
Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm |
title_full_unstemmed |
Simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm |
title_sort |
simultaneous optimization of beam emittance and dynamic aperture for electron storage ring using genetic algorithm |
publisher |
American Physical Society |
series |
Physical Review Special Topics. Accelerators and Beams |
issn |
1098-4402 |
publishDate |
2011-09-01 |
description |
Finding a high quality of lattice that simultaneously meets low beam emittance performance and acceptable dynamic aperture is a challenging task for the storage ring-based light source, especially for the next generation storage ring which is characterized with ultralow beam emittance. This paper presents an alternative method, based on the concept of genetic algorithm, to simultaneously optimize the beam emittance and dynamic aperture for low emittance lattice. Instead of analyzing the nonlinear indicators extracted from the high order nonlinear map, the algorithm can globally optimize the nonlinear performance by the direct dynamic aperture tracking result. So this method is more straightforward and efficient than analyzing the nonlinear driving terms. In order to illustrate this method, the quadrupole and sextupole strengths of a five-bend-achromatic lattice are simultaneously optimized by nondominated sorting genetic algorithm II (NSGA-II). Finally, the optimal linear optics for ultralow emittance lattices with better dynamic aperture are obtained. The result shows that the algorithm is particularly useful for the low emittance lattice design, where the beam emittance and the dynamic aperture always conflict with each other. |
url |
http://doi.org/10.1103/PhysRevSTAB.14.094001 |
work_keys_str_mv |
AT weiweigao simultaneousoptimizationofbeamemittanceanddynamicapertureforelectronstorageringusinggeneticalgorithm AT linwang simultaneousoptimizationofbeamemittanceanddynamicapertureforelectronstorageringusinggeneticalgorithm AT weiminli simultaneousoptimizationofbeamemittanceanddynamicapertureforelectronstorageringusinggeneticalgorithm |
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1724782790777503744 |