Figure 1
The third-generation instrument on SSRL BL4-2. A: a top view of the instrument in transition from 2.5 to 1.5 m distance (a: defining slit; b: USAXS collimator crystal; c: guard slit assemblies; d: sample stage; e: adjustable beam flight path; f: USAXS analyzer crystal; g: detector stage). B: a side view of the instrument in the 0.5 m configuration with the USAXS setup in place. The motorized vertical translation deploys the USAXS crystals, which are otherwise moved out of the beam for the pinhole camera. The experimental tables are translated vertically to compensate for the different beam height downstream of each crystal. |