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Figure 1
Pressure data obtained from one of the pumps installed at the European XFEL, showing the progression of NGI events (fault precursors) over time. The measurements are averaged over a 30 min window for better visualization. Red markers represent NGI events, while the shaded green region indicates maintenance period. The inset plot shows a magnified view of five days of pressure data, illustrating four NGI instances.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 6| November 2026|
https://doi.org/10.1107/S1600577526009197