Neutron Imaging Prototype Facility
Neutron imaging beam line CG-1D.
The CG-1D beam is used for neutron imaging measurements and can be configured for white beam operation or can produce a pulsed beam when operating with a chopper. Apertures (with different diameters D (pinhole geometry) are used at the entrance of the helium-filled flight path to allow L/D variation from 400 to 800. L is the distance between the aperture and the detector (where the image is produced). Samples sit on a translation/rotation stage for alignment and tomography purposes. Detectors for CG-1D include charge-coupled device (CCD) cameras.
A micro-channel plate detector with a 40 micron spatial resolution is available upon request for time-of-flight neutron imaging experiments. 6LiF/ZnS scintillators varying from 50 to 200 microns are available. Work on neutron imaging specifically supports the development of the future VENUS instrument at SNS, which will be dedicated to neutron imaging with an emphasis on Bragg-edge contrast imaging.
Recent Features about Neutron Imaging Research Conducted at CG-1D
Helium-filled aluminum flight tubes on CG-1D.
Ion transport in energy storage materials; three-dimensional mapping of ions in electrodes
Particulate deposition in vehicle parts; two-phase transport in heat pipes; multiphase constrained jet flows; metal casting; reservoir flow, creation, and production
Plant Systems Biology
Partitioning, transport, and fate of carbon fixed by plants; carbon biosequestration; modeling impacts of rising CO2 levels; modified bioenergy feedstock plants; cavitation and gas embolism in plants
Transport and interactions of fluids in porous media, water infiltration and aquifer recharge, plant-plant and plant-fungal interactions, change in pore structure and voids after repeated thawing and freezing of permafrost soil
Biological and Forensic Studies
Structural, contrast agent, and cancer research
Food Science and Archeology
Water migration and degradation through time