Characterization of a radiation detector based on opaque water-based liquid scintillator

Abstract

We present the characterization of a novel radiation detector based on an opaque water-based liquid scintillator. Opaque scintillators, also known as LiquidO, are made to be highly scattering, such that the scintillation light is effectively confined, and read out through wavelength-shifting fibers. The 1-liter, 32-channel prototype demonstrates the capability for both spectroscopy and topological reconstruction of point-like events. The design, construction, and evaluation of the detector are described, including modeling of the scintillation liquid optical properties and the detector's response to gamma rays of several energies. A mean position reconstruction error of 4.4 mm for 1.6 MeV-equivalent events and 7.4 mm for 0.8 MeV-equivalent events is demonstrated using a simple reconstruction approach analogous to center-of-mass.

41 pages, 15 figures

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Cited by in corpus (5)

• Combining Hybrid and Opaque Scintillator Techniques in the Search for Double Beta Plus Decays
• COCOA: a compact Compton camera for astrophysical observation of MeV-scale gamma rays
• Muon tracking in a LiquidO opaque scintillator detector
• LiquidO: Neutrino Detection and Imaging in Opaque Media
• A Hands-on Experience with a Novel Scintillation Detector for Particle Physics