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Figure 3
Brilliance of the typical insertion devices operated at 2.5 GeV (red lines) and 5.0 GeV (blue lines). The areas highlighted in purple indicate the wavelength range available for both 2.5 GeV and 5.0 GeV. (a) Spectra from the six-row type variable polarization type undulator (1st–5th harmonics), in-vacuum undulator (1 m, 1st–15th) and superconducting multipole wiggler, in broken, dotted and solid lines, respectively, and (b) those from the APPLE-II type variable polarization undulator, broken and dotted lines for circular (1st) and linear (1st–5th) polarization modes, respectively.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 5| September 2025| Pages 1143-1151
https://doi.org/10.1107/S1600577525005363
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