Fig. 7
a Experimental setup installed at the BioCARS instrument at the APS for fixed target serial crystallography using the pink beam. The micro-patterned silicon chip is raster-scanned through the X-ray beam using the goniometer installed at the beamline. An inline microscope using Schwarzschild optics is used for sample visualization. It provides the opportunity of through the lense illumination for both sample visualization and laser excitation of the sample. b Close-up showing the chip mounted on the beamline goniometer and being exposed to a stream of humidified helium gas preventing the crystals from drying out. c Schematic view of phycocyanin crystals mounted onto a micro-patterned silicon chip. The short path of the direct beam between the collimator tube and the capillary beamstop behind the sample is highlighted in pink. By flushing the remaining free beam path with helium, extremely low background scattering levels are achieved. The drawings were created using the software Solid Edge ST8, KeyShot 5.0, GIMP 2, and Microsoft PowerPoint
