Application of Pixel-Cell Detector Technology for Advanced Neutron Beam Monitors
At the large-scale national user facilities used for the advanced study of materials, the currently available neutron beam detectors have limitations for intense neutron beams. Yet, a large number of neutron-scattering experiments require beam monitors to operate at intense neutron beam fluxes greater than 10 neutrons per second per square centimeter (n/s/cm). In addition, the currently available beam monitors will need to be replaced in less than two years of operation, due to wire and gas degradation issues. Lastly, there is a need for beam position information that is beyond the capabilities of currently available He and BF neutron beam monitors. To address these issues, this project will explore the use of pixel-cell technology for developing a new generation of stable, long-life, neutron beam monitors. In Phase I, a prototypical Pixel-Cell Neutron Beam monitor will be specified, designed, and constructed. The prototype unit will be tested and evaluated in a neutron beam at the High Flux Isotope Reactor. Commercial Applications and other Benefits as described by the awardee: This research effort should lead to the development and commercialization of advanced neutron beam detectors that will directly benefit the Spallation Neutron Source and other intense neutron sources such as the High Flux Isotope Reactor. As a consequence, the neutron flux and spatial resolution capabilities at these facilities would be more fully utilized. Advancing the detector capabilities is equivalent to increasing operational efficiency and reducing experiment beam time, leading to important savings in operational costs.
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