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T: Fachverband Teilchenphysik
T 34: Neutrino physics 5
T 34.4: Talk
Tuesday, March 5, 2024, 16:45–17:00, Geb. 30.22: Gaede-HS
Liquid Handling System of the OSIRIS detector — Marcel Büchner1, Arshak Jafar1, Meishu Lu2, •Oliver Pilarczyk1, Hans Steiger1,2, Tobias Sterr1, and Michael Wurm1 — 1Johannes Gutenberg-University Mainz, Institute of Physics and EC PRISMA+ — 2Technical University Munich
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kt liquid scintillator experiment currently under construction in Jiangmen (China). To achieve its scientific goals the liquid scintillator has to go through several purification plants on site to make sure it meets the optical and radiopurity requirements. The 20m* OSIRIS pre-detector is the last device behind these purification plants. Its task is to monitor the radiopurity of the purified scintillator before it is filled in the JUNO detector and it will reach sensitivity levels of 10-16g/g on uranium and thorium. OSIRIS is expected to be operated in a continuous mode, which means that parts of the scintillator from the main filling line will be redirected into a bypass in which the OSIRIS detector is placed and then being returned to the main filling line. To make sure every batch of the scintillator stays about 24 h inside the OSIRIS detector a temperature gradient will be established in the detection volume to help stratification of the liquid scintillator inside. This talk covers the operation and function of the Liquid Handling System (LHS) and the included Level Measurement system (LM) which control and oversee the operation of OSIRIS as well as the construction and commissioning process. The development is funded by the DFG Research Unit *JUNO* (FOR5519) and the Cluster of Excellence PRISMA+.
Keywords: OSIRIS; JUNO; JGU Mainz