Paper published on pinhole optimization
A new article has just been published in the Journal of Applied Crystallography on a mathematical method for the selection of the optimum collimation parameters:
Wacha, András. “Optimized Pinhole Geometry for Small-Angle Scattering.” Journal of Applied Crystallography 48.6 (2015): 1843–1848. DOI: 10.1107/S1600576715018932
This is the method we routinely use on CREDO to obtain the highest possible flux while the beam is free from parasitic scattering.