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Figure 1
Schematics of the experimental setup. (a) The native protein crystal suspension (yellow) is mixed inline with the substrate solution (blue) before being deposited onto the detector side of the tape. The X-ray beam (red) is focused on the centre of the polyimide tape (yellow ribbon), which is being drawn from the feeder roll on the left to the collector roll on the right. A diffraction pattern measured in transmission is illustrated as red dots on the grey detector. (b) A technical drawing of the tape-drive device shows how tape is held under tension between two rollers near the interaction region and that X-rays pass through a hole in the centre of the device.

IUCrJ
Volume 4| Part 6| November 2017| Pages 769-777
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517013124