Tune optimization of the third generation light source storage ring based onFrequency Map Analysis

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TIAN Shun-Qiang, LIU Gui-Min, LI Hao-Hu, HOU Jie and ZHANG Wen-Zhi. Tune optimization of the third generation light source storage ring based onFrequency Map Analysis[J]. Chinese Physics C, 2009, 33(3): 224-231. doi: 10.1088/1674-1137/33/3/012
TIAN Shun-Qiang, LIU Gui-Min, LI Hao-Hu, HOU Jie and ZHANG Wen-Zhi. Tune optimization of the third generation light source storage ring based onFrequency Map Analysis[J]. Chinese Physics C, 2009, 33(3): 224-231.  doi: 10.1088/1674-1137/33/3/012 shu
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Received: 2008-05-09
Revised: 2008-07-23
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Tune optimization of the third generation light source storage ring based onFrequency Map Analysis

    Corresponding author: TIAN Shun-Qiang,

Abstract: 

Tune optimization is necessary to optimize the nonlinearity of the third generation light source storage ring. In this paper we summarize the common strategies for choosing a tune and discuss tune optimization. Frequency Map Analysis (FMA) is applied as a tune scanning tool to reveal information about nonlinear resonances and guide the tune optimization. The Shanghai Synchrotron Radiation Facility (SSRF) storage ring is taken as a test lattice, and the optimum solutions are presented in this paper. Moreover, the third order regular structural resonances excited by sextupoles are particularly investigated, and it is found that these resonances distort the tune shifts with amplitude and show a stop-band like the linear structural resonances.

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