Simultaneous SAXS/SANS Method at D22 of ILL: Instrument Upgrade

A customized portable SAXS instrument has recently been constructed, installed, and tested at the D22 SANS ILL. Technical characteristics of this newly established plug-and-play system have reported (J. Appl. Cryst. 2020, 53, 722). An optimized lead shielding arrangement on a double energy threshold X-ray detector further implemented to substantially suppress unavoidable high-energy gamma radiation background detector. The performance upgraded examined systematically by determining suppression factors (SFs) various experimental conditions, including different neutron beam collimation lengths sample-to-detector distances (SDDX-ray). Improved signal-to-noise ratio data enables combined measurements for all possible conditions instrument. Both from same sample volume can be fitted simultaneously using common structural model, allowing unambiguous interpretation scattering data. Importantly, advanced in situ/real time investigations are possible, where both reveal time-resolved complementary nanoscale information.