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Figure 1
(a) Energy of individual pulses in an XFEL pink beam obtained from the peak position of the NiO (111) Bragg reflection. Blue and red dots indicate odd- and even-numbered pulses, respectively. The pulse energies in a long timescale are shown in the inset. The local averaged values shown as the black-solid line indicate the long-term drift. (b) Local average energy of the odd- and even-numbered pulses plotted as a function of the number of pulses included in averaging. The 95% confidence interval is indicated by the shaded areas. |