Calibration of the linear optics in the SSRF storage ring

SYNCHROTRON TECHNOLOGY AND APPLICATIONS

Calibration of the linear optics in the SSRF storage ring

TIAN Shunqiang，

LIU Guimin，

ZHANG Wenzhi，

LI Haohu，

ZHANG Manzhou，

HOU Jie，

CHEN Guangling

Nuclear Science and Techniques

pp.257-265

Published in print 20 Oct 2008

DOI：10.1016/S1001-8042(09)60001-4

CLC：TL5

32801

Phase I commissioning of the SSRF storage ring at 3.0 GeV was ended with encouraging results. Distortions and calibrations of the linear optics during the storage ring commissioning are discussed in this paper. The calibration procedure has reduced sextupole-additional focusing effects by minimizing closed orbit deviation and corrected quadrupole magnetic coefficients with the linear optics from closed orbit (LOCO) technique. After fitting the closed orbit response matrix, linear optics of the storage ring is substantially corrected, and the measured parameters agree well with the design. Four optics modes were commissioned, and relevant machine physics studies were carried out. Their results are summarized.

SSRF storage ringLinear opticsCommissioningCalibration

References

[1]

Zhao Z T, Xu H J, Ding H.

Construction of Shanghai synchrotron radiation facility

. Proceedings of APAC, Indore, India, 2007, 593-596.

[2]

Liu G M, Dai Z M, Li H H, et al. HEP & NP, 2006, 30 (Supp. I): 144-146.

[3]

Xu H J, Zhao Z T. Nucl Sci Tech, 2008, 19: 1-6.

[4]

Liu G M, Li H H, Zhang W Z, et al.

Commissioning of the SSRF storage ring

. In: Proceedings of EPAC. Genoa, Italy: 2008, 2079-2081.

[5]

Robin D, Safranek J, Decking W. Phys Rev ST AB, 1999, 2: 044001.

[6]

Zhao Z T.

Commissioning of new synchrotron radiation facilities

. In: Proceedings of PAC. Albuquerque, New Mexico, USA: 2007, 17-21.

[7]

Portmann G, Robin D, Schachinger L.

Automated beam based alignment of the ALS quadrupoles

. In: Proceedings of PAC. Dallas, Texas, USA: 1995, 2693-2695.

[8]

Chung Y, Decker G, Evans K.

Closed orbit correction using singular value decomposition of the response matrix

. In: Proceedings of PAC. Washington D. C., USA: 1993, 2263-2265.

[9]

Safranek J. Nucl Instrum Methods Phys Res A, 1997, 388: 27-36.

[10]

Martin I P S, Bortolini R, Fielder R, et al.

Electron beam dynamics studies during commissioning of the diamond storage ring

. In: Proceedings of PAC. Albuquerque, New Mexico, USA: 2007, 1115-1117.

[11]

Nadji A, Besson J C, Bouvet F, et al.

Commissioning and Performance of Soleil

. In: Proceedings of PAC. Albuquerque, New Mexico, USA: 2007, 932-934.

[12]

Spencer M J, Boland M J, Dowd R T, et al.

LOCO at the Australian Synchrotron

. In: Proceedings of PAC. Albuquerque, New Mexico, USA: 2007, 3217-3219.

[13]

Smith S L.

Optimization of modern light source lattices

. In: Proceedings of EPAC. Paris, France: 2002, 44-48.

[14]

Tian S Q, Hou Jie, Chen G L et al. Chin Phys C (HEP & NP), 2008, 32: 661-664.

[15]

Terebilo A. Accelerator Toolbox for MATLAB. In: SLAC-PUB-8732.

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