Abstract
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator multi-purpose underground detector, under construction near the Chinese city of Jiangmen, with data collection expected to start in 2021. The main goal of the experiment is the neutrino mass hierarchy determination, with more than three sigma significance, and the high-precision neutrino oscillation parameter measurements, detecting electron anti-neutrinos emitted from two nearby (baseline of about 53 km) nuclear power plants. Besides, the unprecedented liquid scintillator-type detector performance in target mass, energy resolution, energy calibration precision, and low-energy threshold features a rich physics program for the detection of low-energy astrophysical neutrinos, such as galactic core-collapse supernova neutrinos, solar neutrinos, and geo-neutrinos.
Highlights
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator multi-purpose underground detector, under construction near the Chinese city of Jiangmen, with data collection expected to start in 2021
The JUNO (Jiangmen Underground Neutrino Observatory) detector will be built at a shallow depth, with an average overburden of about 700 m, close to Jiangmen City, China, at a 53 km distance from the Yangjiang and Taishan nuclear power plants
(12 cm thick, with an inner diameter of 35.4 m), kept in position by a stainless steel truss. This central detector is placed inside an active water pool that will act as a Cherenkov muon veto and will reduce gamma rays and neutrons coming from the rock
Summary
The JUNO (Jiangmen Underground Neutrino Observatory) detector will be built at a shallow depth, with an average overburden of about 700 m, close to Jiangmen City, China, at a 53 km distance from the Yangjiang and Taishan nuclear power plants. The core of the detector is composed of 20 kton of liquid scintillator (LS), contained in an acrylic sphere (12 cm thick, with an inner diameter of 35.4 m), kept in position by a stainless steel truss. This central detector is placed inside an active water pool that will act as a Cherenkov muon veto and will reduce gamma rays and neutrons coming from the rock. Distinguish the position of variation in the flux oscillation, and extract the desired mass hierarchy information, the total energy resolution must be √σE ≤ 3%
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