Dortmund 2021 – wissenschaftliches Programm
T 68.1: Gruppenbericht
Mittwoch, 17. März 2021, 16:00–16:20, Tr
Search for Neutrinoless Double-Beta Decay with LEGEND-200 — •Michael Willers for the LEGEND collaboration — Max-Planck-Institut für Physik, Föhringer Ring 6, D-80805 München.
The Large Enriched Germanium Experiment for Neutrinoless ββ Decay (LEGEND) is a proposed ton-scale 76Ge-based neutrinoless double-beta decay experimental program with discovery potential at a half-life greater than 1028 years.
The first 200-kg phase (LEGEND-200) is currently
under construction at the Gran Sasso underground laboratory (Laboratori Nazionale
del Gran Sasso, LNGS, Italy) and commissioning of the experiment is scheduled to start in 2021. With a background index in the signal region of interest around
Qββ = 2039 keV of 2 · 10−4 cts/(kev kg yr) and a data-taking period of 5 years, LEGEND-200 is expected to achieve a half-life sensitivity of 1027 years. In this contribution, results from a first integration test (the so-called Post-GERDA Test) conducted in summer of 2020 as well as the current status of the experiment will be presented.
This work is supported in part by the Max-Planck Society, the German Federal Ministry for Education and Research (BMBF) and the German Research Foundation (DFG) via the SFB1258 and the cluster of excellence ORIGINS.