A prototype for SANDD: A highly-segmented pulse-shape-sensitive plastic scintillator detector incorporating silicon photomultiplier arrays

Abstract

We report the first clear observation of neutron/gamma-ray pulse-shape sensitivity of a fully-instrumented 8 $\times$ 8 array of plastic scintillator segments coupled to two 5 cm $\times$ 5 cm 64-channel SiPM arrays as part of a study of the key metrics of a prototype antineutrino detector module designed for directional sensitivity. SANDD (a Segmented AntiNeutrino Directional Detector) will eventually comprise a central module of 64 elongated segments of ${}^6$Li-doped pulse-shape-sensitive scintillator rods, each with a square cross section of 5.4 mm $\times$ 5.4 mm, surrounded by larger cross section bars of the same material. The most important metrics with the potential to impact the performance of the central module of SANDD are neutron and gamma-ray pulse-shape sensitivity using silicon photomultipliers (SiPMs), particle identification via scintillator rod multiplicity, and energy and position resolution. As a first step, we constructed a prototype detector to investigate the performance of a central SANDD-like module using two 64-channel SiPM arrays and rods of undoped pulse-shape-sensitive plastic scintillator.

10 pages, 21 figures, revised version

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Cited by in corpus (8)

• Spectral Photon Sorting For Large-Scale Cherenkov and Scintillation Detectors
• SANDD: A directional antineutrino detector with segmented 6Li-doped pulse-shape-sensitive plastic scintillator
• Synthesis and processing of lithium-loaded plastic scintillators on the kilogram scale
• Characterization of a radiation detector based on opaque water-based liquid scintillator
• Value-assigned pulse shape discrimination for neutron detectors
• Evaluation of a Positron-Emission-Tomography-based SiPM readout for Compact Segmented Neutron Imagers
• The Architected Multi-material Scintillator System: Designs and Modeling
• Evaluation of Light Collection from Highly Scattering Media using Wavelength-Shifting Fibers