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T: Fachverband Teilchenphysik

T 90: Experimentelle Methoden III

T 90.10: Vortrag

Donnerstag, 28. März 2019, 18:15–18:30, S01

Calibrating the OSIRIS pre-detector - A radioactivity monitor for JUNO — •Alexandre Göttel^{1, 2}, Yaping Chen¹, Christoph Genster^{1, 2}, Philipp Kampmann^{1, 2}, Livia Ludhova^{1, 2}, Michaela Schever^{1, 2}, Achim Stahl^{1, 2}, Christopher Wiebusch^{1, 2}, and Yu Xu^{1, 2} for the JUNO collaboration — ¹IKP-2, Forschungszentrum Jülich — ²III Physikalisches Institut, RWTH Aachen University

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kt liquid scintillator reactor neutrino experiment currently being built in the Guangdong province in southern China. Its energy resolution is designed to go below 3% at 1 MeV in order to reach a statistical significance of at least 3 sigma for the neutrino mass hierarchy. It is therefore imperative to closely monitor the radiopurity of the liquid scintillator. The Online Scintillator Internal Radioactivity Investigation System (OSIRIS) is being developed for this purpose. In order to achieve this goal a rigorous energy calibration of the OSIRIS pre-detector is necessary. In this talk the methods used for this calibration are discussed, as well as how they were optimized beforehand using a GEANT4-based Monte Carlo simulation.