Characterization of <sup>76</sup>Ge detectors for LEGEND-200
ORAL
Abstract
The Large Enriched Germanium Experiment for Neutrinoless double-beta Decay (LEGEND) is an experimental search for neutrinoless double beta decay (0νββ) in 76Ge with a discovery potential of a half-life beyond 1028 years. The first phase, LEGEND-200, is an experimental search using 200 kg of 76Ge-enriched germanium, with commissioning data-taking having started in 2022. LEGEND-200 will reuse germanium detectors from GERDA and the MAJORANA DEMONSTRATOR with 2/3 of the active mass as state-of-the-art inverted coaxial point contact detectors. Extensive characterization of these detectors is necessary to quantify the detector response and ensure each detector reaches the performance standards necessary for LEGEND. Characterization tests include the use of a 228Th source to measure the detector’s energy resolution and pulse-shape discrimination capabilities. An overview of the LEGEND characterization program and its results will be presented.
*This work is supported by the U.S. DOE, and the NSF, the LANL, ORNL and LBNL LDRD programs; the European ERC and Horizon programs; the German DFG, BMBF, and MPG; the Italian INFN; the Polish NCN and MNiSW; the Czech MEYS; the Slovak SRDA; the Swiss SNF; the UK STFC; the Russian RFBR,; the Canadian NSERC and CFI; the LNGS and SURF facilities.
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Presenters
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Erin Engelhardt
- University of North Carolina at Chapel H