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Figure 8
Demonstration of a photon-beam-based feedback. Mean of the central wavelengths for each FEL pulse number averaged over 20 pulse trains before (red curve) and after (blue curve) the adaptation by the LLRF regulation. The corresponding central wavelengths calculated from all individual FEL spectra are shown as light red and light blue dots.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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