Speaker
Description
The LEGEND Collaboration is searching for neutrinoless double beta ($0\nu\beta\beta$) decay in Germanium-76 ($^{76}$Ge) via a phased approach. The first of two phases, LEGEND-200 (L200), will use 200 kg of enriched High Purity Germanium (HPGe) detectors, submerged in a liquid argon active shield, in order to target a half life sensitivity of 10$^{27}$ years. It is currently being commissioned at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy and the first physics data is expected later this year. Inverted Coaxial Point Contact (ICPC) detectors are a new type of HPGe detector that will be utilised in L200. Their unique geometry enables them to maintain a large detector mass whilst achieving both superior energy resolution and strong discrimination of signal against background. These detectors must be comprehensively characterised before their deployment at LNGS in order to verify their performance and behaviour. This characterisation process is performed in the underground laboratories of HADES in Belgium and SURF in the US. This talk will focus on the characterisation activities of LEGEND, with a particular emphasis on the active volume determination of ICPC detectors. Active volume determination is a crucial characterisation task required for $0\nu\beta\beta$ analyses directly affecting the measured half-life sensitivity.
