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Shifting scintillator neutron detector

United States Patent

March 4, 2014
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Provided are sensors and methods for detecting thermal neutrons. Provided is an apparatus having a scintillator for absorbing a neutron, the scintillator having a back side for discharging a scintillation light of a first wavelength in response to the absorbed neutron, an array of wavelength-shifting fibers proximate to the back side of the scintillator for shifting the scintillation light of the first wavelength to light of a second wavelength, the wavelength-shifting fibers being disposed in a two-dimensional pattern and defining a plurality of scattering plane pixels where the wavelength-shifting fibers overlap, a plurality of photomultiplier tubes, in coded optical communication with the wavelength-shifting fibers, for converting the light of the second wavelength to an electronic signal, and a processor for processing the electronic signal to identify one of the plurality of scattering plane pixels as indicative of a position within the scintillator where the neutron was absorbed.
Clonts; Lloyd G. (Knoxville, TN), Cooper; Ronald G. (Oak Ridge, TN), Crow, Jr.; Morris Lowell (Oak Ridge, TN), Hannan; Bruce W. (Maryville, TN), Hodges; Jason P. (Knoxville, TN), Richards; John D. (Knoxville, TN), Riedel; Richard A. (Knoxville, TN)
UT-Battelle, LLC (Oak Ridge, TN)
13/ 510,362
November 23, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with government support under Contract No. DE-ACO5-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.