This paper demonstrates for the first time an event-mode imaging based neutron diffraction detector system that employs a scintillator screen, an image intensifier and a Timepix3-based camera. This highly configurable approach allows for large-solid-angle, low-cost neutron diffraction setups and this work shows that the performance is comparable with that of the 3 He detectors on a time-of-flight neutron diffraction beamline. Rietveld analysis for this type of data was enabled by implementing data reduction in the MAUD Rietveld code.

doi.org/10.1107