Linear optics calibration and nonlinear optimization during the commissioning of the SSRF storage ring

TIAN Shun-Qiang; ZHANG Wen-Zhi; LI Hao-Hu; ZHANG Man-Zhou; HOU Jie; ZHOU Xue-Mei; LIU Gui-Min

doi:10.1088/1674-1137/33/S2/021

Chinese Physics C> 2009, Vol. 33> Issue(S2) : 83-85 DOI: 10.1088/1674-1137/33/S2/021

Linear optics calibration and nonlinear optimization during the commissioning of the SSRF storage ring

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Abstract：
Phase I commissioning of the SSRF storage ring on 3.0 GeV beam energy was started at the end of December 2007. A lot of encouraging results have been obtained so far. In this paper, calibrations of the linear optics during the commissioning are discussed, and some measured results about the nonlinearity given. Calibration procedure emphasizes correcting quadrupole magnetic coefficients with the Linear Optics from Closed Orbit (LOCO) technique. After fitting the closed orbit response matrix, the linear optics of the four test modes is substantially corrected, and the measured physical parameters agree well with the designed ones.

References

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. ZHAO Z T, XU H J, DING H. In Proc. of APAC. Indore,India, 2007. 593-5962. LIU Cui-Min, DAI Zhi-Min, LI Hao-Hu et al. HEP NP,2006, 30(Supp.I): 144-1463. XU Hong-Jie, ZHAO Zhen-Tang. Nuclear Science and Techniques, 2008, 19: 1-64. LIU G M, LI H H, ZHANG W Z et al. In Proc. of EPAC.Italy, 2008, 2079-2085. Terebilo A. Accelerator Toolbox for MATLAB, SLAC-PUB-87326. Safranek J. Nucl. Instr. Meth. in Phys. Res. A, 1997,388: 27-36

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TIAN Shun-Qiang, ZHANG Wen-Zhi, LI Hao-Hu, ZHANG Man-Zhou, HOU Jie, ZHOU Xue-Mei and LIU Gui-Min. Linear optics calibration and nonlinear optimization during the commissioning of the SSRF storage ring[J]. Chinese Physics C, 2009, 33(S2): 83-85. doi: 10.1088/1674-1137/33/S2/021

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Received: 2009-01-05
Revised: 1900-01-01

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