PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - Neutrino Physics
JUNO potential for neutrino oscillation physics
M. Grassi* on behalf of the JUNO collaboration
*corresponding author
Full text: pdf
Pre-published on: June 10, 2020
Published on:
The Jiangmen Underground Neutrino Observatory (JUNO) is a Liquid Scintillator (LS) detector currently under construction in the south of China (Jiangmen city, Guangdong province). JUNO aims to detect the disappearance of reactor antineutrinos at an average baseline of 53 km, with the primary goal of determining the neutrino mass ordering and performing a sub-percent measurement of three of the neutrino oscillation parameters. This physics program is rooted in the detector’s capability to resolve, for the first time, the interference pattern between the solar and atmospheric oscillation modes, thanks to an unprecedented 3% energy resolution at 1 MeV.

The main purpose of this contribution is to elaborate on JUNO expected sensitivity in terms of neutrino oscillation physics, showing the impact of JUNO prospective results within the global neutrino landscape. We also address how the JUNO design is geared to achieve the target energy resolution by deploying
about 18000 20-inch PMTs and 25000 3-inch PMTs to detect at least 1200 photoelectrons per MeV of deposited energy. PMTs cover 78% of the detector surface, and are arranged in a spherical geometry to monitor 20 kton of ultra-pure Linear AlkylBenzene acting as the antineutrino target mass, which make JUNO the largest LS detector currently being built. The relation between the overall detector performance and physics sensitivity will also be briefly described.
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