A Low Mass Optical Grid for the PROSPECT Reactor Antineutrino Detector

Abstract

PROSPECT, the Precision Reactor Oscillation and SPECTrum experiment, is a short-baseline reactor antineutrino experiment designed to provide precision measurements of the ${}^{235}$U product ${\overline{\nu }}_e$ spectrum of utilizing an optically segmented 4-ton liquid scintillator detector. PROSPECT's segmentation system, the optical grid, plays a central role in reconstructing the position and energy of ${\overline{\nu }}_e$ interactions in the detector. This paper is the technical reference for this PROSPECT subsystem, describing its design, fabrication, quality assurance, transportation and assembly in detail. In addition, the dimensional, optical and mechanical characterizations of optical grid components and the assembled PROSPECT target are also presented. The technical information and characterizations detailed here will inform geometry-related inputs for PROSPECT physics analysis, and can guide a variety of future particle detection development efforts, such as those using optically reflecting materials or filament-based 3D printing.

arXiv comment31 pages, 28 figures

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Cited by in corpus (10)

• Improved Short-Baseline Neutrino Oscillation Search and Energy Spectrum Measurement with the PROSPECT Experiment at HFIR
• Measurement of the Antineutrino Spectrum from ${}^{235}$U Fission at HFIR with PROSPECT
• Limits on Sub-GeV Dark Matter from the PROSPECT Reactor Antineutrino Experiment
• Final Measurement of the U235 Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR
• PROSPECT-II Physics Opportunities
• Wavelength-Shifting Performance of Polyethylene Naphthalate Films in a Liquid Argon Environment
• Final Search for Short-Baseline Neutrino Oscillations with the PROSPECT-I Detector at HFIR
• The Radioactive Source Calibration System of the PROSPECT Reactor Antineutrino Detector
• Calibration strategy of the PROSPECT-II detector with external and intrinsic sources
• Measurement of the Reactor Antineutrino Spectrum from ${}^{235}$U Fission using PROSPECT