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Shifting scintillator neutron detector

Patent ·
OSTI ID:1126920
; ; ; ; ; ;
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.
Research Organization:
ORNL (Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States))
Sponsoring Organization:
USDOE
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,664,608
Application Number:
13/510,362
OSTI ID:
1126920
Country of Publication:
United States
Language:
English

References (2)

Shifting scintillator prototype large pixel wavelength-shifting fiber detector for the POWGEN3 powder diffractometer
  • Crow, M. L.; Hodges, J. P.; Cooper, R. G.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 529, Issue 1-3 https://doi.org/10.1016/j.nima.2004.04.167
journal August 2004
Dead-time optimized time-correlated photon counting instrument with synchronized, independent timing channels journal March 2007

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