Abstract
The JUNO (Jiangmen Underground Neutrino Observatory), a 20 kton multi-purpose underground liquid scintillator detector, has been proposed and approved for realization in the south of China. After an intense design phase, the overall concept of the structure of the detector has been finalized, paving the way towards the construction of the several components and subsystems, which will compose it. Meanwhile, the excavation of the site which will host the experiment has been started and is rapidly progressing. The main physics target of JUNO is the determination of the neutrino mass hierarchy, which will be accessible through the measurement of the pattern of antineutrino spectrum from two high power nuclear complexes under installation 53 km away from the experimental site. In this work I describe the broad physics capabilities of the experiment, which include in addition to the crucial measure of the neutrino hierarchy the high precision determination of three oscillation parameters, as well as a rich astroparticle program, and I illustrate the main technical characteristics of the detector.
Highlights
Introduction on neutrino mass hierarchy measurementsPrecise measurements of the θ13 neutrino oscillation parameter by the Daya Bay [1], RENO [2] and Double Chooz [3] experiments, opened the path to the determination of the neutrino mass hierarchy
The detector component, PMT production and testing and electronics development are in progress
The JUNO experiment will provide data from supernovae, solar, atmospheric and geo-neutrinos, proton decay and it will improve the knowledge on these fields
Summary
Precise measurements of the θ13 neutrino oscillation parameter by the Daya Bay [1], RENO [2] and Double Chooz [3] experiments, opened the path to the determination of the neutrino mass hierarchy. MeV) and large optical coverage around 78%; Low energy scale uncertainty less than 1% The νe flux will be detected through the reaction νe + p → e+ + n (inverse beta decay) and its rate will be around 83 events per day
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