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T: Fachverband Teilchenphysik
T 74: Hochenergie-Neutrinophysik 2
T 74.8: Talk
Wednesday, March 26, 2014, 18:40–18:55, P3
Sensitivity study of the neutrino mass hierarchy determination in JUNO using reactor antineutrinos — •Julia Sawatzki and Lothar Oberauer — Technische Universität München, Physik Department E15, James Franck Straße, 85748 Garching
We investigate a method for determining the hierarchy of the neutrino mass spectrum with electron antineutrinos using a medium-baseline reactor experiment.
The JUNO (Jiangmen Underground Neutrino Observatory) Experiment is a planned spherical 20-kiloton liquid scintillater detector near Huizhou in China. It is at a distance of 53 kilometers from two reactor complexes with a total thermal power of 36 GW. Caused by the high photo coverage, the high quantum efficiency of the photomultipliers, the high light yield and the high transparency of the liquid scintillator, an energy resolution of 2-3% is projected.
The favoured technique to determine the mass hierarchy applies a Fourier transform to the event rate as a function of the neutrino flight distance over neutrino energy. Additionally a χ2-analysis of the sensitivity of simulated oscillating reactor νe spectrum data was performed for comparison.
Therefore the sensitivity study will give the experimental requirements to determine the neutrino mass hierachy before the detector will begin data taking in 2020.
This work was supported by the Maier-Leibniz-Laboratorium and by the DFG cluster of excellence ’Origin and Structure of the Universe’.