Progress in the development and characterization of position- and n/$\gamma$-discriminating neutron detector modules

ORAL

Abstract

We present progress in the development of a neutron-detector array consisting of modules made from $\emph{p}$-terphenyl, a bright, fast, n/$\gamma$-discriminating solid organic scintillator. The module is comprised of 2x2x2cm$^3$ $\emph{p}$-terphenyl crystals that have been optically-coupled lengthwise to create a pseudo-bar module. While only relying on a photomultiplier tube on each end, the detector module is capable of distinguishing interactions between six or more crystals while maintaining the scintillator's pulse-shape discrimination (PSD) capability down to $\sim$150keVee. Here we present the PSD, position-discrimination, and timing-resolution characteristics of a single module. Additionally, the progress on array construction and the planned commissioning experiment will be briefly discussed.

*Supported in part by U.S. DOE NNSA Grant \#DE-NA0003841

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Authors

  • C.E. Parker

    • Texas A&M
    • Cyclotron Institute, Texas A\&M University

  • D.P. Scriven

    • Dept. of Physics \& Astronomy and Cyclotron Institute, Texas A\&M University

  • G.V. Rogachev

    • Dept. of Physics \& Astronomy and Cyclotron Institute, Texas A\&M University

  • G. Christian

    • Dept. of Astronomy \& Physics, Saint Mary's University, and Dept. of Physics \& Astronomy and Cyclotron Institute, Texas A\&M University

  • L.G. Sobotka

    • Depts. of Chemistry and Physics, Washington University, St. Louis

  • E. Aboud

    • Dept. of Physics \& Astronomy and Cyclotron Institute, Texas A\&M University

  • S. Ahn

    • Cyclotron Institute, Texas A\&M University

  • J. Bishop

    • Cyclotron Institute, Texas A\&M University

  • G. Chubarian

    • Cyclotron Institute, Texas A\&M University

  • E. Koshchiy

    • Cyclotron Institute, Texas A\&M University

  • S. Ota

    • Cyclotron Institute, Texas A\&M University

  • J.M. Elson

    • Dept. of Chemistry, Washington University, St. Louis

  • A.G. Thomas

    • Dept. of Chemistry, Washington University, St. Louis

  • N. Dronchi

    • Dept. of Physics, Washington University, St. Louis