JUNO Conceptual Design Report

Understand

The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector.

• It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China.
• The experimental hall, spanning more than 50 meters, is under a granite mountain of over 700 m overburden.
• Within six years of running, the detection of reactor antineutrinos can resolve the neutrino mass hierarchy at a confidence level of 3-4$\sigma$, and determine neutrino oscillation parameters $\sin^2\theta_{12}$, $\Delta m^2_{21}$, and $|\Delta m^2_{ee}|$ to an accuracy of better than 1%.