The Canadian Light Source (CLS) Quantum Materials Spectroscopy Center (QMSC) beamline will employ a novel double period (55 mm, 180 mm) elliptically polarizing undulator (EPU) to produce photons of arbitrary polarization in the soft X-ray regime. The long period and high field of the 180 mm period EPU will have a strong dynamic focusing effect on the storage ring electron beam. We have considered two partial correction schemes, a 4 m long planar array of BESSY-II style current strips, and soft iron L-shims. In this paper we briefly consider the implementation of these correction schemes.
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Research Article| July 27 2016
EPU correction scheme study at the CLS
AIP Conf. Proc. 1741, 020012 (2016)
Drew Bertwistle, C. Baribeau, L. Dallin, S. Chen, J. Vogt, W. Wurtz; EPU correction scheme study at the CLS. AIP Conf. Proc. 27 July 2016; 1741 (1): 020012. https://doi.org/10.1063/1.4952791
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