Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 80: Neutrinophysik IV

T 80.9: Vortrag

Donnerstag, 28. März 2019, 18:05–18:20, S06

Reduction of the ¹⁴C background in the JUNO experiment — •Philipp Kampmann^1,2, Yaping Cheng¹, Christoph Genster^1,2, Alexandre Göttel^1,2, Livia Ludhova^1,2, Michaela Schever^1,2, Achim Stahl², Christopher Wiebusch², and Yu Xu^1,2 — ¹IKP-2, Forschungszentrum Jülich — ²III Physikalisches Institut, RWTH Aachen University

The Jiangmen Underground Neutrino Observatory (JUNO) will be a 20 kt liquid scintillator neutrino detector. 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 emitting nuclear reactor cores. 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 ¹⁴C can spoil the reconstruction of the neutrino energy. In this talk methods for discriminating pile-up events are presented. These methods are in addition to a simple clusterization algorithm, the utilization of spherical harmonics and a Likelihood-test of the photon hit time informations.