logo

Correction of integrated multipoles of five IDs in SSRF

SYNCHROTRON SCIENCE AND TECHNOLOGY

Correction of integrated multipoles of five IDs in SSRF

LU Jie
ZHOU Qiaogen
WANG Hongfei
ZHANG Wei
Nuclear Science and TechniquesVol.21, No.5pp.257-260Published in print 20 Oct 2010
31800

Five of the seven Phase I beamlines of Shanghai Synchrotron Radiation Facility (SSRF) are based on insertion devices (IDs), which include two wigglers, one elliptically polarized undulator (EPU), and two in-vacuum undulators. There were some inevitable field integral errors in manufacturing the IDs, and these would affect performance of the storage ring. The integrated multipoles were corrected by using the magic fingers technique. In this paper, we report the correction method based on the simulated-annealing algorithm. The results show that the integrated multipole components were corrected to meet the design specifications.

Insertion devicesMagic FingersIntegrated multipole components
References
[1] Tanaka T, Kitamura H. Rev Sci Instrum, 2000, 71: 3010-3014.
[2] Hoyer E, Marks S, Pipersky P, et al. Rev Sci Instrum, 1995, 66:1901-1903.
[3] Diviacco B, Bracco R, Knapic C, et al. Trim Magnets for Field Integral Correction of APPLE Type Undulators, Sincrotrone Trieste Technical Note ST/SL-04/01, April 2004
[4] Kang L S, Xie Y, You S Y, et al. Simulated annealing algorithm. Beijing: Science Press, 1998.
[5] Wang H F, Lu J, Zhou Q G, et al. HPLPB, 2008, 20: 871-875.
[6] Tanaka T, Seike T, Kitamura H. Nucl Instrum Meth Phys Res, 2001, A465: 600-605.
[7] Lu J, Zhou Q G, Wang H F. HPLPB, 2009, 21: 1597-1600.
[8] Zhou Q G, Zhang M, Li Y, et al.

An Apple-II Type Helical Undulator for SSRF

. APAC2007, 714-716.
Baidu ScholarGoogle Scholar