Non-invasive online wavelength measurements at FLASH2 and present benchmark

Braune, M.; Buck, J.; Kuhlmann, M.; Grunewald, S.; Düsterer, S.; Viefhaus, J.; Tiedtke, K.

doi:10.1107/S1600577517013893

Journal of Synchrotron Radiation Journal of
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Figure 11
Differences $[\Delta h\nu]$ of the values of the photon energy $[h\nu_{\rm{org}}]$ and $[h\nu_{\rm{PCA}}]$ which have been derived by applying the standard wavelength monitoring analysis based on a line profile fit procedure to the original raw ADC traces and the reconstructed traces from the PCA analysis, respectively. The photon energy result for a single shot i was determined from a moving average spectrum of the 21 shots [i − 10, i + 10]. Upper panel: $[\Delta h\nu]$ of 9992 single shots for all bunch numbers. Lower panel: histograms of $[\Delta h\nu]$ for every bunch number.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 25| Part 1| January 2018| Pages 3-15

https://doi.org/10.1107/S1600577517013893

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