Würzburg 2018 – scientific programme
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T: Fachverband Teilchenphysik
T 9: Neutrinophysik IX
T 9.7: Talk
Monday, March 19, 2018, 17:30–17:45, Z6 - HS 0.002
The OSIRIS pre-detector - A radioactivity monitor for the JUNO liquid scintillator — •Paul Christian Hackspacher1, Michael Wurm1, Sebastian Lorenz1, and Christoph Genster2 for the JUNO collaboration — 1Johannes Gutenberg Universität Mainz — 2Forschungszentrum Jülich
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. In order to reliably reconstruct neutrino-induced inverse beta decay events from photomultiplier signals, scintillator purity is imperative. Potential air leaks in the filling and cycling lines or failures of the purification plants are risks that endanger the high radiopurity necessary to obtain clean signals within such a large active target volume. The Online Scintillator Internal Radioactivity Investigation System (OSIRIS) is being developed as a failsafe monitor to assess the quality of the scintillator batches before filling them into the central detector. A Monte Carlo simulation serves as a feasibility study and is used to investigate the sensitivity limits of such a system. This talk will present the current status, estimated sensitivity and future plans for the OSIRIS pre-detector.