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Figure 6
Overview and strategy for on-demand droplet delivery on the EuXFEL SPB/SFX instrument. (a) Example of the timing required to execute a 28.2 kHz intra-train injection strategy to achieve 100 Hz overall data collection rate. We dispensed 20 crystal-containing droplets in bursts that started before the arrival of each X-ray pulse train. This stabilized the burst such that the last ten droplets arrived synchronized with the ten X-ray pulses within each 355 µs pulse train. (b, c) The PolyPico micro-dispensing head and cartridge mounted in the IRD. (d) A high-speed video camera observes droplets in the interaction region. This example shows three sequential droplet explosions within the same pulse train. (e) Example JUNGFRAU images clearly show diffraction patterns that are consistent with lysozyme microcrystals.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 1| January 2026| Pages 198-206
https://doi.org/10.1107/S1600577525008999
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