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Figure 6
Single-shot intensity correlation between the QBPM signal (I0) and the sum of counts in a ROI on the JUNGFRAU detector over 18000 shots at Ei = 11.242 keV. The ROI is set as a box of 11 × 23 pixels centered on the pixel with the maximum Ir Lβ2 fluorescence intensity from one of the Si(660) analyzer crystals. The QBPM signal is normalized by the average photon flux of the SASE beam, as in Fig. 2[link](c). The average value of the slope is 515.82 with standard deviation of 1.66.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 30| Part 6| November 2023| Pages 1038-1047
https://doi.org/10.1107/S1600577523007312
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