![]() ![]() The total number of inward facing PMTs to detect scintillating In diameter as tightly as possible, covering ∼75% of the surface area of The photon detectors, PMTs, are mounted on a spherical surface of ∼40 m Track reconstruction and efficency study to understand and reduce cosmogenic backgrounds. This independent muon information will help muon tagging, Top Tracker to reconstruct the cosmic muons’ direction, covering ∼1/3 of Scintillating strips and readout by multi-anode PMTs will be re-used as the A water circulation and purification system with a capacity of 20,000 - 30,000 tons High quality ultrapure water is required to achieve theĭesigned performance. This detector is covered by Tyvek as reflecting and diffusing sheets to increase The PMT arrangement is optimizedįor high muon detection efficiency and good track resolution. Instrumented with PMTs surrounding the CD. The Water Cherenkov detector is a pool filled with purified water and It consists of a Water Cherenkov detector and a Top Tracker system. The veto system is used for muon detection, muon induced background study and Steps from the raw material production, transportation, local facilitiesįor liquid-handling and purification, instrumentation for qualityĬontrol as well as safety and cleaning methods. A scheme for mass production of LS will be set up to comprise all As a consequence, light yield,įluorescence time profile, transparency and radio-purity are the key features Of neutrino events will be detected per day. Low-background environment is crucial since only a few tens The energy resolution of JUNO is required to beģ% at 1MeV, corresponding to at least 1,100 photoelectrons (pe) per MeV ofĭeposited energy. Linear alkyl benzene (LAB) as the solvent, plus PPO as the scintillation fluor and a The detection of neutrinos and antineutrinos. The CD is filled with liquid scintillator (LS) which serves as the target for Is in progress, and a prototype to study the performance of PMTs is under preparation. Including water sealing, implosion protection and installation on the detector The central detector is a balloon supported by acrylic panels in a steel tank. The acrylic sphere will be built from hundreds of acrylic sheets withĪ thickness of 12 cm by the bulk-polymerization technology. The baseline option of the central detector is anĪcrylic sphere of 35 m in diameter supported by a stainless-steel structure. The central detector (CD), which contains 20,000 tons liquid scintillatorĪnd ∼17,000 PMTs, is designed to have a very good energy resolution of 3% andĪ long lifetime of over 20 years. Neutrinos from dark-matter annihilation, proton decays,Īs well as scenarios of nonstandard neutrino interactions and Lorentz/CPT New physics beyond the Standard Model, including sterile The JUNO detector can also observe neutrinos/antineutrinos from terrestrialĪnd extra-terrestrial sources, including the supernova burst neutrinos,ĭiffused supernova neutrinos, geoneutrinos, atmospheric neutrinosĪnd solar neutrinos, which provide exciting opportunities to address important topics Sin 2 θ 12, Δ m 2 21, and | Δ m 2 e e | to anĪccuracy of better than 1%. Lead to precise determination of the neutrino oscillation parameters ![]() Meanwhile, the excellent energy resolution and large fiducial volume will Power Plants can resolve the neutrino mass hierarchy at a confidence level ofģ-4 σ. Running, the detection of reactor antineutrinos from Yangjiang and Taishan Nuclear Is under a granite mountain of over 700 m overburden. The experimental hall, spanning more than 50 meters, It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Neutrino mass hierarchy using an underground liquid scintillator detector. ![]() The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the ![]()
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