Indium-Loaded Liquid Scintillator for Low-Energy Solar-Neutrino Spectroscopy

1978 ◽  
Vol 41 (1) ◽  
pp. 63-66 ◽  
Author(s):  
Loren Pfeiffer ◽  
Allen P. Mills ◽  
R. S. Raghavan ◽  
E. A. Chandross
Keyword(s):  
Solar Neutrino ◽  
Liquid Scintillator ◽  
Low Energy

scholarly journals LOW ENERGY NEUTRINO PHYSICS AFTER SNO AND KamLAND

2004 ◽  
Vol 19 (05) ◽  
pp. 337-348 ◽  
Author(s):  
L. OBERAUER
Keyword(s):  
Neutrino Physics ◽  
Solar Neutrino ◽  
Liquid Scintillator ◽  
Low Energy ◽  
Neutrino Masses ◽  
Neutrino Experiment ◽  
Neutrino Detection ◽  
Energy Neutrino ◽  
Supernova Neutrino ◽  
Solar Neutrino Experiment

In the recent years important discoveries in the field of low energy neutrino physics (Eν in the ≈ MeV range) have been achieved. Results of the solar neutrino experiment SNO show clearly flavor transitions from νe to νμ,τ. In addition, the long standing solar neutrino problem is basically solved. With KamLAND, an experiment measuring neutrinos emitted from nuclear reactors at large distances, evidence for neutrino oscillations has been found. The values for the oscillation parameters, amplitude and phase, have been restricted. In this paper the potential of future projects in low energy neutrino physics is discussed. This encompasses future solar and reactor experiments as well as the direct search for neutrino masses. Finally the potential of a large liquid scintillator detector in an underground laboratory for supernova neutrino detection, solar neutrino detection, and the search for proton decay p→K+ν is discussed.

scholarly journals Neutrino oscillations at low energy long baseline experiments in the presence of nonstandard interactions and parameter degeneracy

2020 ◽  
Vol 2020 (6) ◽  
Author(s):  
Osamu Yasuda
Keyword(s):  
Small Parameter ◽  
Solar Neutrino ◽  
Neutrino Oscillations ◽  
Liquid Scintillator ◽  
Low Energy ◽  
Neutrino Detector ◽  
Analytical Expression ◽  
Long Baseline ◽  
Combining Data

Abstract We discuss the analytical expression of the oscillation probabilities at low energy long baseline experiments, such as Tokai to HyperKamiokande (T2HK) and Tokai to HyperKamioka and Korea (T2HKK), in the presence of nonstandard interactions (NSIs). We show that these experiments are advantageous in the exploration of the NSI parameters ($\epsilon_D$, $\epsilon_N$), which were suggested to be nonvanishing to account for the discrepancy between the solar neutrino and Kamioka Liquid scintillator Anti-Neutrino Detector data. We also show that, when the NSI parameters are small, parameter degeneracy in the CP phase $\delta$, $\epsilon_D$ and $\epsilon_N$ can be resolved by combining data of the T2HK and T2HKK experiments.

The Borexino purification system

2014 ◽  
Vol 29 (16) ◽  
pp. 1442002 ◽  
Author(s):  
Jay Benziger
Keyword(s):  
Real Time ◽  
Solar Neutrino ◽  
Liquid Scintillator ◽  
Solar Neutrinos ◽  
Low Energy ◽  
Gas Stripping ◽  
Neutrino Detector ◽  
Scintillation Light ◽  
Purification System ◽  
First Time

Purification of 278 tons of liquid scintillator and 889 tons of buffer shielding for the Borexino solar neutrino detector is performed with a system of combined distillation, water extraction, gas stripping and filtration. The purification system removed K , U and Th by distillation of the pseudocumene solvent and the PPO fluor. Noble gases, Rn , Kr and Ar were removed by gas stripping. Distillation was also employed to remove optical impurities and reduce the attenuation of scintillation light. The success of the purification system has facilitated the first time real time detection of low energy solar neutrinos.

scholarly journals Solar Neutrinos Spectroscopy with Borexino Phase-II

2018 ◽  
Author(s):  
Lino Miramonti ◽  
M. Agostini ◽  
K. Altenmueller ◽  
S. Appel ◽  
V. Atroshchenko ◽  
...  
Keyword(s):  
Phase Ii ◽  
Solar Neutrino ◽  
Wide Band ◽  
Solar Neutrinos ◽  
Low Energy ◽  
Fusion Reactions ◽  
Oscillation Mechanism ◽  
Upper Limits ◽  
Flux Measurements ◽  
Neutrino Fluxes

Solar neutrinos have played a central role in the discovery of the neutrino oscillation mechanism. They still are proving to be a unique tool to help investigate the fusion reactions that power stars and further probe basic neutrino properties. The Borexino neutrino observatory has been operationally acquiring data at Laboratori Nazionali del Gran Sasso in Italy since 2007. Its main goal is the real-time study of low energy neutrinos (solar or originated elsewhere, such as geo-neutrinos). The latest analysis of experimental data, taken during the so-called Borexino Phase-II (2011-present), will be showcased in this talk - yielding new high-precision, simultaneous wide band flux measurements of the four main solar neutrino components belonging to the "pp" fusion chain (pp, pep, 7Be, 8B), as well as upper limits on the remaining two solar neutrino fluxes (CNO and hep).

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