Neutron scintillators using wavelength shifting fibers

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A proposed design for an optically-based, one-dimension scintillation detector to replace the gas-filled position-sensitive proportional counter currently used for a wide-angle neutron detector (WAND) at the high-Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory (ORNL) is presented. The scintillator, consisting of a mixture of {sup 6}LiF and ZnS(Ag) powders in an epoxy binder, is coupled to an array of wavelength shifting optical fibers which provide position resolution. The wide-angle neutron detector is designed to cover a 120 degree arc with a 75 cm radius of curvature. The final detector design provides for 600 optical fibers coupled to the ... continued below

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7 p.

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Hutchinson, D.P.; Miller, V.C. & Ramsey, J.A. June 1, 1995.

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Description

A proposed design for an optically-based, one-dimension scintillation detector to replace the gas-filled position-sensitive proportional counter currently used for a wide-angle neutron detector (WAND) at the high-Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory (ORNL) is presented. The scintillator, consisting of a mixture of {sup 6}LiF and ZnS(Ag) powders in an epoxy binder, is coupled to an array of wavelength shifting optical fibers which provide position resolution. The wide-angle neutron detector is designed to cover a 120 degree arc with a 75 cm radius of curvature. The final detector design provides for 600 optical fibers coupled to the scintillator screen with an angular resolution of 0.2 degrees. Each individual pixel of the detector will be capable of operating at count rates exceeding 1 MHz. Results are presented from the measurement of neutron conversion efficiencies for several screen compositions, gamma-ray sensitivity, and spatial resolution of a 16 element one-dimensional array prototype.

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7 p.

Notes

INIS; OSTI as DE95012841

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  • New tools for neutron instrumentation workshop, Les Houches (France), 6-10 Jun 1995

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  • Other: DE95012841
  • Report No.: CONF-9506185--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 74190
  • Archival Resource Key: ark:/67531/metadc711208

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1, 1995

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  • Sept. 12, 2015, 6:31 a.m.

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  • Jan. 19, 2016, 8:27 p.m.

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Hutchinson, D.P.; Miller, V.C. & Ramsey, J.A. Neutron scintillators using wavelength shifting fibers, article, June 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc711208/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.