Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 83: Methods in Astroparticle Physics IV

T 83.1: Vortrag

Donnerstag, 19. März 2026, 16:15–16:30, KS 00.004

The Monte Carlo simulation of JUNO's pre-detector OSIRIS — •Lukas Bieger, Dhanushka Bandara, Silvia Cengia, Jessica Eck, Adrian Keiderling, Florian Kirsch, Tobias Lachenmaier, Anurag Sharma, and Tobias Sterr — Eberhard Karls Universität Tübingen

The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment with a 20 kt liquid scintillator detector located in southern China. Its primary objective is to determine the neutrino mass ordering by measuring the oscillated energy spectrum of electron antineutrinos from nearby nuclear power plants with unprecedented energy resolution. The scintillator filling of JUNO was completed in August 2025 and JUNO started data-taking. The Online Scintillator Internal Radioactivity Investigation System (OSIRIS) monitored the radiopurity of the liquid scintillator during the filling, ensuring that the required contamination upper limits were met. OSIRIS is an 18 t liquid scintillator detector, instrumented with 64 20-inch PMTs to detect the light produced by events in the detector's sensitive volume. A precise Monte Carlo simulation is essential for understanding the detector's performance and for optimizing analysis methods. This talk will present the comprehensive simulation framework developed for OSIRIS, with particular emphasis on the MC tuning strategy employed to improve the accuracy of the simulation, as well as on its validation using calibration data, which demonstrates good agreement between simulation and measurements.

Keywords: OSIRIS; JUNO