Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 34: Neutrino physics 5

T 34.3: Talk

Tuesday, March 5, 2024, 16:30–16:45, Geb. 30.22: Gaede-HS

Event Reconstruction in OSIRIS — •Elisabeth Neuerburg, Achim Stahl, and Jochen Steinmann — RWTH Aachen

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20kton liquid scintillator based neutrino observatory, which is currently under construction in southern China. To ensure the success of JUNO's physics program, stringent limits on the contamination of the scintillator with radioactive isotopes have been defined. OSIRIS (Online Scintillator Internal Radioactivity Investigation System) is a 20t liquid scintillator detector, which monitors the radiopurity during filling of JUNO. It consists of a cylindrical acrylic vessel surrounded by 64 PMTs detecting coincidence signals of the Bi-Po decay in the uranium and thorium series. Using the charge signals of the PMTs, the position and energy of such decay events is reconstructed based on a likelihood method. In this talk the method and performance of the reconstruction is presented.

Keywords: OSIRIS; Reconstruction; liquid scintillator