Patent ID: 8796636
Filing Date: 2014-08-05
Classification: G01T

Abstract:
1. An apparatus, comprising: a neutron scintillator; a first set of wavelength shifting fiber optic elements positioned in optical proximity to an upper portion of the neutron scintillator, wherein said first set of wavelength shifting fiber optic elements includes at least a first wavelength shifting fiber optic element and a second wavelength shifting fiber optic element, wherein said first and second wavelength shifting fiber optic elements are positioned generally parallel to one another; a second set of wavelength shifting fiber optic elements positioned in optical proximity to a lower portion of the neutron scintillator, wherein said second set of wavelength shifting fiber optic elements includes at least a third wavelength shifting fiber optic element and a fourth wavelength shifting fiber optic element, wherein said third and fourth wavelength shifting fiber optic elements are positioned generally parallel to one another; a first photo-multiplication device optically coupled to the first wavelength shifting fiber optic element and said third wavelength shifting fiber optic element; a second photo-multiplication device optically coupled to the second wavelength shifting fiber optic element and the fourth wavelength shifting fiber optic element; and a controller structured to: interpret a first electronic signal from the first photo-multiplication device; interpret a second electronic signal from the second photo-multiplication device; and distinguish a neutron radiation event from a gamma radiation event in response to the first electronic signal and the second electronic signal.