Speaker
Description
The Jiangmen Underground Neutrino Observatory (JUNO) will be a 20\,kt liquid scintillator neutrino detector located at Kaiping, Jiangmen in South China. With the data aquisition starting in 2021, its main goal is the determination of the neutrino mass hierarchy from a precise measurement of the energy spectrum of anti-electron-neutrinos 53\,km away from the reactor. To precisely measure the oscillation pattern of the reactor spectrum an unpredecent energy resolution for this kind of detector of 3% at 1\,MeV is needed. Pile-up events with background from radioactive decays such as those from ${}^{14}$C can spoil the reconstruction of the neutrino energy. On this poster methods for detecting spoiled pile-up events are presented. In addition to a simple clusterization algorithm on the hit times, the utilization of spherical harmonics of the event distribution as well as a Likelihood-test of the hit times are used to tag pile-up events.
