A deuterated liquid scintillator for supernova neutrino detection

Abstract

For the next galactic supernova, operational neutrino telescopes will measure the neutrino flux several hours before their optical counterparts. Existing detectors, relying mostly on charged current interactions, are mostly sensitive to ${\bar{\nu }}_e$ and to a lesser extent to ${\nu }_e$. In order to measure the flux of other flavors (${\nu }_{\mu },{\bar{\nu }}_{\mu },{\nu }_{\tau },\text{and}{\bar{\nu }}_{\tau }$), we need to observe their neutral current interactions with the detector. Such a measurement is not only crucial for overall normalization of the supernova neutrino flux but also for understanding the intricate neutrino oscillation physics. A deuterium based detector will be sensitive to all neutrino flavors. In this paper, we propose a 1 kton deuterated liquid scintillator (DLS) based detector that will see about 435 neutral current events and 170 (108) charged current ${\nu }_e$ (${\bar{\nu }}_e$) events from a fiducial supernova at a distance of 10 kpc from Earth. We explore the possibility of extracting spectral information from the neutral current channel $\stackrel{(-)}{\nu }d\to \stackrel{(-)}{\nu }np$ by measuring the quenched kinetic energy of the proton in the final state, where the neutron in the final state is tagged and used to reduce backgrounds. We also discuss the secondary interactions of the recoil neutrons in the detector.

37 pages, 13 figures; expanded discussion on secondary interactions

References in corpus (13)

• Simulation of Coherent Non-Linear Neutrino Flavor Transformation in the Supernova Environment I: Correlated Neutrino Trajectories
• Supernova Neutrino Detection
• Collective neutrino flavor transitions in supernovae and the role of trajectory averaging
• Multiple Spectral Splits of Supernova Neutrinos
• Search for Proton Decay via $p\to e^{+}{\pi }^0$ and $p\to {\mu }^{+}{\pi }^0$ in 0.31 megaton$\cdot$years exposure of the Super-Kamiokande Water Cherenkov Detector
• On the rate of core collapse supernovae in the Milky Way
• Neutrino oscillations in supernovae: angular moments and fast instabilities
• Getting the Most from Detection of Galactic Supernova Neutrinos in Future Large Liquid-Scintillator Detectors
• Performance of Large Area Picosecond Photo-Detectors (LAPPD)
• On-line recognition of supernova neutrino bursts in the LVD detector
• Robust measurement of supernova ${\nu }_e$ spectra with future neutrino detectors
• A model-independent approach to the reconstruction of multi-flavor supernova neutrino energy spectra
• JUNO Physics and Detector

Cited by in corpus (2)

• Gravitational memory signal from neutrino self-interactions in supernova
• Rocks, Water and Noble Liquids: Unfolding the Flavor Contents of Supernova Neutrinos