SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 87: Neutrinos III
T 87.3: Vortrag
Mittwoch, 22. März 2023, 18:00–18:15, POT/0051
Calibration of the JUNO pre-detector OSIRIS — •Moritz Cornelius Vollbrecht1,2, Livia Ludhova1,2, Runxuan Liu1,2, Anita Meraviglia2,3, Nikhil Mohan2,3, Luca Pelicci1,2, Mariam Rifai1,2, Apeksha Singhal2,3, and Tobias Richard Sterr4 — 1Forschungszentrum Jülich GmbH, Institut für Kernphysik IKP-2, Jülich, Germany — 2III. Physikalisches Institut B, RWTH Aachen University, Aachen, Germany — 3GSI Helmholtz Centre for Heavy Ion Research, Darmstadt, Germany — 4Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
The 20-kton liquid scintillator detector (LS) of the Jiangmen Underground Neutrino Observatory (JUNO) experiment, currently under construction in southern China, has a huge potential for insights in several fields of particle physics. To achieve its many goals, stringent radiopurity requirements have to be fulfilled. In order to ensure these limits, the Online Scintillator Internal Radioactivity Investigation System (OSIRIS) was designed as a pre-detector for JUNO. During the months-long filling of JUNO, OSIRIS will closely assess the radiopurity of purified LS batches to allow fast countermeasures in case of contaminations. In OSIRIS, an array of 76 Large Photomultiplier Tubes (LPMTs) instruments a water-shielded 20-ton LS target. An Automatic Calibration Unit (ACU) from the Daya Bay experiment is used for the calibration of event and vertex reconstruction as well as LPMT timing and charge responses. A separate laser system is used for redundant LPMT timing and charge calibration. This presentation will summarize the current status of the calibration strategy of OSIRIS.