Simulation of natural radioactivity backgrounds in the central detector

Understand

The Jiangmen Underground Neutrino Observatory (JUNO) is an experiment proposed to determine the neutrino mass hierarchy and probe the fundamental properties of neutrino oscillation.

• The JUNO central detector is a spherical liquid scintillator detector with 20 kton fiducial mass.
• It is required to achieve a $3\%/\sqrt{E(MeV)}$ energy resolution with very low radioactive background, which is a big challenge to the detector design.
• In order to ensure the detector performance can meet the physics requirements, reliable detector simulation is necessary to provide useful information for detector design.