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T: Fachverband Teilchenphysik

T 32: Neutrinophysik X

T 32.7: Vortrag

Dienstag, 20. März 2018, 18:05–18:20, Z6 - HS 0.002

Reduction of the ¹⁴C background for the neutrino mass-hierarchy measurement of the JUNO experiment — •Philipp Kampmann^1,2, Yaping Cheng¹, Christoph Genster^1,2, Livia Ludhova^1,2, Michaela Schever^1,2, Rikhav Shah^1,2, Achim Stahl², Christopher Wiebusch², and Yu Xu^1,2 — ¹IKP-2 Forschungszentrum Jülich — ²III. Physikalisches Institut B, 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 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 ¹⁴C can spoil the reconstruction of the neutrino energy. In this talk a clusterization method for detecting spoiled pile-up events is presented. It is optimized to give the best sensitivty on the neutrino mass-hierarchy. Furthermore the suppression of dark-noise using this method is presented.