The JSNS^2 Detector

Abstract

The JSNS^2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV^2 mass-splitting range. The experiment will search for the appearance of electron antineutrinos oscillated from muon antineutrinos. The electron antineutrinos are detected via the inverse beta decay process using a liquid scintillator detector. A 1MW beam of 3 GeV protons incident on a spallation neutron target produces an intense and pulsed neutrino source from pion, muon, and kaon decay at rest. The JSNS^2 detector is located 24 m away from the neutrino source and began operation from June 2020. The detector contains 17 tonnes of gadolinium (Gd) loaded liquid scintillator (LS) in an acrylic vessel, as a neutrino target. It is surrounded by 31 tonnes of unloaded LS in a stainless steel tank. Optical photons produced in LS are viewed by 120 R7081 Hamamatsu 10-inch Photomultiplier Tubes (PMTs). In this paper, we describe the JSNS^2 detector design, construction, and operation.

41 pages, 29 figures

References in corpus (12)

• The Reactor Antineutrino Anomaly
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• Development and evaluation of 10-inch Photo-Multiplier Tubes for the Double Chooz experiment
• Light-weight Flexible Magnetic Shields For Large-Aperture Photomultiplier Tubes
• Production and optical properties of liquid scintillator for the JSNS${}^2$ experiment
• The calibration system for the photomultiplier array of the SNO+ experiment
• Stainless steel tank production and tests for the JSNS${}^2$ neutrino detector
• Performance of PMTs for the JSNS2 experiment

Cited by in corpus (15)

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• Dark sectors in neutron-shining-through-a-wall and nuclear absorption signals
• Search for exotic interactions of solar neutrinos in the CDEX-10 experiment
• First Measurement of Missing Energy Due to Nuclear Effects in Monoenergetic Neutrino Charged Current Interactions
• Review of sterile neutrino searches at very short-baseline reactor experiments
• Measuring tau neutrino appearance probability via unitarity
• Sensitivity to Kaon Decays to ALPs at Fixed Target Experiments
• Characterization of the correlated background for a sterile neutrino search using the first dataset of the JSNS${}^2$ experiment
• Study on the accidental background of the JSNS${}^2$ experiment
• Search for Hidden Neutrinos at the European Spallation Source: the SHiNESS experiment
• Toward diagnosing neutrino non-unitarity through CP phase correlations
• Searching for axions with kaon decay at rest
• Evaluation of the performance of the event reconstruction algorithms in the JSNS${}^2$ experiment using a ${}^{252}$Cf calibration source
• Pulse Shape Discrimination in JSNS${}^2$
• Current-readout technique for ultra-high-rate experiments