Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 8: Neutrino physics 2

T 8.2: Talk

Monday, March 4, 2024, 16:15–16:30, Geb. 30.22: Gaede-HS

Muon Veto of LEGEND-200 — •Gina Grünauer for the LEGEND collaboration — Physikalisches Institut, Eberhard Karls Universität Tübingen

The Large Enriched Germanium Experiment for Neutrinoless β β Decay (LEGEND) is an experimental program searching for the neutrinoless double beta (0ν β β) decay of ⁷⁶Ge. To look for such rare events and reach the aimed half-life sensitivity of more than 10²⁸ years, every opportunity to reduce the background has to be taken. A Water-Cherenkov-Veto is used for this purpose for the current experimental phase LEGEND-200. It uses photomultiplier tubes (PMTs) as detectors in a water-tank faced with a reflective foil to increase the light yield inside the Veto. This contribution presents the working principle and data analysis of the Muon Veto of LEGEND-200.

Keywords: LEGEND; Water-Cherenkov-Veto; Muons; Neutrinoless Double Beta Decay; Active Background Shielding