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Figure 1
Schematic layout of the tr-BCDI setup integrated with a four-circle diffractometer. In the pump–probe sequence, the XFEL pulse was subsequently delivered after the pump laser at the interaction point (IP). The XFEL beam direction remained fixed, whereas the pump laser incidence could be configured horizontally or vertically with user's request. A vertically oriented optical camera is positioned above the sample stage for precise alignment, ensuring that the center of rotation of the diffractometer is perfectly coincident with the spatial IP of the XFEL and the pump laser.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 6| November 2026|
https://doi.org/10.1107/S1600577526007927