Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 102: Neutrino Physics IX
T 102.2: Vortrag
Freitag, 4. April 2025, 09:15–09:30, VG 3.104
Implementation of the Pulse Shape Discrimination Classifier within the JuLeAna Software Stack for LEGEND-200 — •Verena Aures1, Florian Henkes1, Felix Hagemann2, and Susanne Mertens1 — 1Technische Universität München, Deutschland — 2Max Planck Institut für Physik, Garching bei München, Deutschland
The Large Enriched Germanium Experiment for Neutrinoless ββ Decay (LEGEND) searches for neutrinoless double-beta decay using high-purity germanium detectors enriched in 76Ge, which serve as both the source and detector. The project’s final phase, LEGEND-1000, aims to set a new limit on the half-life of 76Ge exceeding 1028 years. The first phase, LEGEND-200, is currently running at the Laboratori Nazionali del Gran Sasso in Italy with its first results presented in 2024. The experimental sensitivity is enhanced by using pulse shape discrimination (PSD) techniques to distinguish signal-like from background-like events. This work focuses on the development and optimization of the A/E classifier, a PSD tool to efficiently reject multi-site events. The implementation was performed within the Julia-based software stack JuLeAna (Julia LEGEND Analysis), focusing on the classifier’s performance and the evaluation of a charge trapping correction.
Keywords: LEGEND; neutrinoless double-beta decay; pulse shape analysis; germanium