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Figure 4
An example of three-dimensional wavefront visualization. For the SASE3 undulator with a defined maximum active segment length of 130 m, the simulated XFEL pulse data taken from the XPD (Manetti et al., 2016BB17) are used: photon energy 800 eV, electron bunch charge 250 pC and electron energy 14 GeV. The top row corresponds to an untapered undulator and pulse energy 8 mJ, and the bottom row to an undulator with optimized tapering (Schneidmiller & Yurkov, 2016BB25) and pulse energy 17 mJ. (a), (c) Vertical cuts of the pulse phase and intensity; (b), (d) slice-to-slice shift of the pulse center of mass. The slice times are color coded and the intensities are represented by the size of the circles.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 49| Part 4| August 2016| Pages 1347-1355
doi:10.1107/S160057671600995X
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