Prospects for pre-supernova neutrino observation in future large liquid-scintillator detectors

AbstractObservations of the neutrino burst from Supernova 1987A by water Cherenkov detectors (KAMIOKANDE II, IMB) and liquid scintillator detectors (Baksan, Mont Blanc) are reviewed. It is shown that neutrino signal from SN 1987A was observed. There are 24 events in three detectors (KAMIOKANDE II, IMB, Baksan) recorded at 7:35 UT. The average properties of the signal (effective neutrino temperature, total energy of neutrino emission, burst duration) are consistent with the general theoretical description of supernova explosions. Special attention is concentrated on individual characteristics of the signals detected and the available discrepancies of the model estimates. Time profile of the neutrino burst, estimates of effective neutrino temperatures and total neutrino energies, angular distributions of the events are discussed. These properties point out, probably, a more compound picture of the phenomenon. The more detail analysis of the experimental data is needed and all possibilities must be at least considered. Based upon the Baksan observations, an upper limit of 0.35 core collapse in the Galaxy per year (90% C.L.) is shown.

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Response of liquid scintillator detectors to neutrons of En<1 MeV

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/s0168-9002(98)00485-9 ◽

1998 ◽

Vol 416 (1) ◽

pp. 109-114 ◽

Cited By ~ 11

Author(s):

N Colonna ◽

G Tagliente

Keyword(s):

Liquid Scintillator ◽

Scintillator Detectors

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Characterizations of BC501A and BC537 liquid scintillator detectors

Applied Radiation and Isotopes ◽

10.1016/j.apradiso.2015.06.008 ◽

2015 ◽

Vol 104 ◽

pp. 15-24 ◽

Cited By ~ 7

Author(s):

Jianguo Qin ◽

Caifeng Lai ◽

Bangjiao Ye ◽

Rong Liu ◽

Xinwei Zhang ◽

...

Keyword(s):

Liquid Scintillator ◽

Scintillator Detectors

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Status of the Jiangmen Underground Neutrino Observatory

Ukrainian Journal of Physics ◽

10.15407/ujpe64.7.635 ◽

2019 ◽

Vol 64 (7) ◽

pp. 635

Author(s):

M. Schever

Keyword(s):

Energy Resolution ◽

Liquid Scintillator ◽

Solar Neutrinos ◽

Mass Hierarchy ◽

Neutrino Mass Hierarchy ◽

Antineutrino Detector ◽

Central Detector ◽

Supernova Neutrino ◽

Under Construction ◽

Neutrino Background

The Jiangmen Underground Neutrino Observatory (JUNO) is a next generation multipurpose antineutrino detector currently under construction in Jiangmen, China. The central detector, containing 20 kton of a liquid scintillator, will be equipped with ∼18 000 20 inch and 25 600 3 inch photomultiplier tubes. Measuring the reactor antineutrinos of two powerplants at a baseline of 53 km with an unprecedented energy resolution of 3%/√︀E(MeV), the main physics goal is to determine the neutrino mass hierarchy within six years of run time with a significance of 3–4q. Additional physics goals are the measurement of solar neutrinos, geoneutrinos, supernova burst neutrinos, the diffuse supernova neutrino background, and the oscillation parameters sin2 O12, Δm212, and |Δm2ee| with a precision <1%, as well as the search for proton decays. The construction is expected to be completed in 2021.

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Unambiguously Resolving the Potential Neutrino Magnetic Moment Signal at Large Liquid Scintillator Detectors

Chinese Physics Letters ◽

10.1088/0256-307x/38/11/111401 ◽

2021 ◽

Vol 38 (11) ◽

pp. 111401

Author(s):

Ziping Ye ◽

Feiyang Zhang ◽

Donglian Xu ◽

Jianglai Liu

Keyword(s):

Magnetic Moment ◽

Liquid Scintillator ◽

Solar Neutrinos ◽

Electromagnetic Properties ◽

Beyond The Standard Model ◽

Fundamental Physics ◽

Neutrino Magnetic Moment ◽

Solar Axion ◽

Moment Interaction ◽

Scintillator Detectors

Non-vanishing electromagnetic properties of neutrinos have been predicted by many theories beyond the Standard Model, and an enhanced neutrino magnetic moment can have profound implications for fundamental physics. The XENON1T experiment recently detected an excess of electron recoil events in the 1–7 keV energy range, which can be compatible with solar neutrino magnetic moment interaction at a most probable value of μν = 2.1 × 10−11 μ B. However, tritium backgrounds or solar axion interaction in this energy window are equally plausible causes. Upcoming multi-tonne noble liquid detectors will test these scenarios more in depth, but will continue to face similar ambiguity. We report a unique capability of future large liquid scintillator detectors to help resolve the potential neutrino magnetic moment scenario. With O(100) kton⋅year exposure of liquid scintillator to solar neutrinos, a sensitivity of μν < 10−11 μ B can be reached at an energy threshold greater than 40 keV, where no tritium or solar axion events but only neutrino magnetic moment signal is still present.

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LOW-ENERGY NEUTRINO PHYSICS WITH LIQUID SCINTILLATOR DETECTORS

Particle Physics at the Silver Jubilee of Lomonosov Conferences ◽

10.1142/9789811202339_0003 ◽

2019 ◽

Author(s):

Livia Ludhova

Keyword(s):

Neutrino Physics ◽

Liquid Scintillator ◽

Low Energy ◽

Energy Neutrino ◽

Scintillator Detectors

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Scintillation balloon for neutrinoless double-beta decay search with liquid scintillator detectors

Progress of Theoretical and Experimental Physics ◽

10.1093/ptep/ptz064 ◽

2019 ◽

Vol 2019 (7) ◽

Cited By ~ 1

Author(s):

S Obara ◽

Y Gando ◽

K Ishidoshiro

Keyword(s):

Beta Decay ◽

Liquid Scintillator ◽

Rare Decay ◽

Feasibility Studies ◽

Neutrinoless Double Beta Decay ◽

Environmental Radioactivity ◽

Double Beta Decay ◽

Sequential Decay ◽

Antineutrino Detector ◽

Scintillator Detectors

Abstract Environmental radioactivity is a dominant background for rare decay search experiments, and it is difficult to completely remove such an impurity from detector vessels. We propose a scintillation balloon as the active vessel of a liquid scintillator in order to identify this undesirable radioactivity. According to our feasibility studies, the scintillation balloon enables the bismuth–polonium sequential decay to be tagged with a 99.7% efficiency, assuming a KamLAND-type (KamLAND = Kamioka Liquid scintillator AntiNeutrino Detector) liquid scintillator detector. This tagging of sequential decay using alpha rays from the polonium improves the sensitivity to neutrinoless double-beta decay while rejecting beta ray background from the bismuth.

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