Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 83: Methods in Astroparticle Physics IV
T 83.6: Vortrag
Donnerstag, 19. März 2026, 17:30–17:45, KS 00.004
Development of an Optimized Liquid Argon Anti-Coincidence Classifier for LEGEND-200 — •Nele Sierig, Rosanna Deckert, Niko Lay, and Stefan Schönert for the LEGEND collaboration — Department of Physics, TUM School of Natural Sciences, Technical University of Munich, 85748 Garching b. München, Germany
The LEGEND-200 experiment searches for neutrinoless double beta decay of 76Ge using up to 200 kg of high-purity germanium detectors immersed in instrumented liquid argon (LAr). To ensure ultra-low backgrounds, the experiment is operated deep underground at the Laboratori Nazionali del Gran Sasso. The LAr not only provides shielding and cooling, but also enhances active background suppression through an optical instrumentation system that detects scintillation light emitted upon interactions by ionizing radiation.
In this talk, I will present a novel LAr classifier, developed to tag and reject backgrounds efficiently. Our methodology integrates spatial and temporal information from the LAr scintillation light and utilizes detector-type-specific models. This development is essential for meeting the ambitious background goals and maximizing the overall sensitivity of LEGEND-200.
We acknowledge support from the DFG under Germany’s Excellence Strategy – EXC 2094 (ORIGINS) and through the Sonderforschungsbereich SFB 1258. We acknowledge support by the BMFTR Verbundprojekt 05A2023 (LEGEND).
Keywords: Neutrinoless double beta decay; High purity germanium detector; Liquid Argon; Underground physics