Göttingen 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 82: Neutrino Physics VII

T 82.5: Vortrag

Donnerstag, 3. April 2025, 17:15–17:30, VG 3.104

R&D efforts regarding the water tank instrumentation for LEGEND-1000 — •Lorenz Gessler — University Tübingen, Tübingen, Germany

In the pursuit of the stringent background target set by the next phase of the Large Enriched Germanium Experiment for Neutrinoless Double-Beta Decay (LEGEND), the integration and optimization of additional veto systems are essential. Among the most challenging backgrounds are those arising from muon-induced neutron showers, which can produce metastable isotopes such as ^77mGe.

This talk will present ongoing R&D efforts dedicated to enhancing the LEGEND-1000 water tank instrumentation. We are investigating a range of neutron-tagging strategies, such as gadolinium-loaded plastics, alternative Gd-based compounds, and liquid scintillator solutions, using a dedicated 700 L water Cherenkov test detector in Tübingen. By comparing and refining these approaches, we aim to guide the ultimate design of the water-based veto system, thereby improving background suppression and advancing the experiment’s sensitivity to the elusive 0νββ decay signal.

Keywords: Scintillator; Gadolinium; Neutron; Muon; LEGEND