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Figure 2
Full width at half-maximum values of size [in the horizontal (a) and vertical (b) directions] and divergence [in the horizontal (c) and vertical (d) directions] of the photon source as a function of the resonance photon energy for the ID06-U18 at EBS/ESRF. The continuous lines are calculated using equation (18)[link]. The points (dots) correspond to ray tracing using the `Undulator Gaussian' widget. Every point corresponds to the average value after 50 SHADOW4 simulations, using a random Monte Carlo seed each. The corresponding standard deviation is shown as error bars [note the small range of horizontal size on the left (a) resulting in large error bars].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 2| March 2025| Pages 340-354
https://doi.org/10.1107/S1600577525000190
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