SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 39: Neutrinos, Dark Matter VI

T 39.2: Talk

Tuesday, March 21, 2023, 17:15–17:30, POT/0006

Plans for the Muon Veto of LEGEND-1000 — •Gina Grünauer for the LEGEND collaboration — Physikalisches Institut, Eberhard Karls Universität Tübingen

The Large Enriched Germanium Experiment for Neutrinoless β β Decay (LEGEND) is a ton-scale experimental program searching for the neutrinoless β β (0ν β β) decay of ⁷⁶Ge. LEGEND-1000 will have a total active mass of the detector of about 1000 kg, with the goal of a discovery sensitivity at half-life of more than 10²⁸ years. To reach such a sensitivity, the background rate must be reduced to less than 10⁻⁵ cts/(keV·kg·yr). A Cherenkov Muon Veto is currently being developed for this purpose. The new Veto will further optimize the detection efficiency and the noise. The number and positions of the photomultiplier tubes (PMTs) are adapted to the requirements of the LEGEND-1000 Muon Veto.