The macromolecular neutron diffractometer (MaNDi) at the Spallation Neutron Source, Oak Ridge: enhanced optics design, high-resolution neutron detectors and simulated diffraction

A newly designed neutron guide system for the macromolecular diffractometer (MaNDi) at the Spallation Neutron Source is described, along with large-area high-resolution neutron detectors. Monte Carlo techniques used to simulate diffraction from large unit cells are also detailed.