Jiangmen Underground Neutrino Observatory

Understand

The Jiangmen Underground Neutrino Observatory (JUNO) is a multipurpose neutrino-oscillation experiment designed to determine the neutrino mass hierarchy and to precisely measure oscillation parameters by detecting reactor antineutrinos, observe supernova neutrinos, study the atmospheric, solar neutrinos and geo-neutrinos, and perform exotic searches, with a 20 kiloton liquid scintillator detector of unprecedented $3\%$ energy resolution (at 1 MeV) at 700-meter deep underground and to have other rich scientific possibilities.

• Currently MC study shows a sensitivity of the mass hierarchy to be $\overline{\Delta\chi^2}\sim 11$ and $\overline{\Delta\chi^2}\sim 16$ in a relative and an absolute measurement, respectively.
• JUNO has been approved by Chinese Academy of Sciences in 2013, and an international collaboration was established in 2014.
• The civil construction is in preparation and the R$\&$D of the detectors are ongoing.