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Figure 8
Wavefront simulations of 1:1 focusing of ERL undulator sources. In each figure the solid and dotted lines are the horizontal and vertical profiles without considering crystal thermal deformation, and the dash-dotted and dashed lines are the corresponding profiles considering crystal thermal deformation. (a) to (d) are for planar undulators with first harmonic at 8 keV, and (e) to (h) are for helical undulators with first harmonic at 8.33 keV, the maximum on-axis power condition. In the legend, 5 m and 25 m are the length of the undulators, and HC and HF stand for high coherence and high flux modes, respectively.

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