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Figure 1
Three-period magnetic modeling of the HU640 (OPHELIE2) variable-polarization undulator concept, showing the three sets of pure air coils, generating the vertical and variably phase-shifted horizontal magnetic fields. The actual insertion device has 14 effective periods plus two passive correction periods. Dimensions are in mm.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 19| Part 4| May 2012| Pages 508-520
doi:10.1107/S0909049512010588
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