Neutron Sciences Directorate

MARS is designed as a flexible platform on which to perform high-spatial and high-temporal resolution imaging using an intense, polychromatic cold neutron beam.  In addition, white-beam neutron grating interferometry (nGI) is now offered to provide spatially-resolved neutron phase- and small-angle scattering contrasts (see Ref. 4). The instrument configuration, including beam collimation, sample platforms, sample environments, and detectors may be tailored for each measurement. The unique imaging capabilities at MARS complement those of the VENUS instrument at the Spallation Neutron Source, which is dedicated to neutron imaging with an emphasis on time-of-flight (i.e., energy-dependent) contrast. 

Instrument papers

1. Torres et al., “Overview of MARS: the Multimodal Advanced Radiography Station at the High-Flux Isotope Reactor,” In: Craft, A.E., Bilheux, H.Z. (eds) Proceedings of the 12th World Conference on Neutron Radiography. WCNR 2024. Springer Proceedings in Physics, vol 348. Springer, Cham. DOI: 10.1007/978-3-032-15003-5_33
2. Santodonato et al., “The CG-1D Neutron Imaging Beamline at the Oak Ridge National Laboratory High Flux Isotope Reactor,” Physics Procedia 69, pp. 104-108 (2015). DOI: 10.1016/j.phpro.2015.07.015
3. Crow et al., “The CG1 instrument development test station at the high flux isotope reactor,” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associate Equipment 634, no. 1, pp S71-S74 (2011). DOI: 10.1016/j.nima.2010.06.213
4. Zhang et al., “Neutron Grating Interferometry at the High Flux Isotope Reactor,” In: Craft, A.E., Bilheux, H.Z. (eds) Proceedings of the 12th World Conference on Neutron Radiography. WCNR 2024. Springer Proceedings in Physics, vol 348. Springer, Cham. DOI: 10.1007/978-3-032-15003-5_41