Design of an ultrathin cold neutron detector

A. Osovizky, K. Pritchard, Y. Yehuda-Zada, J. Ziegler, E. Binkley, P. Tsai, A. Thompson, N. Hadad, M. Jackson, C. Hurlbut, G. M. Baltic, C. F. Majkrzak, N. C. Maliszewskyj

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We describe the design and performance of an ultrathin (<2 mm) cold neutron detector consisting of 6LiF:ZnS(Ag) scintillator in which wavelength shifting fibers have been embedded to conduct scintillation photons out of the medium to a silicon photomultiplier photosensor. The counter has a neutron sensitive volume of 12 mm wide × 30 mm high × 1.4 mm deep. Twenty-four 0.5 mm diameter wavelength shifting fibers conduct the scintillation light out of the plane of the detector and are concentrated onto a 3 mm × 3 mm silicon photomultiplier. The detector is demonstrated to possess a neutron detection efficiency of 93% for 3.27 meV neutrons with a gamma ray rejection ratio on the order of 10−7.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume893
DOIs
StatePublished - 11 Jun 2018
Externally publishedYes

Keywords

  • CANDOR
  • LiF:ZnS(Ag)
  • Neutron detector
  • Scintillator
  • Silicon photomultiplier

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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