First operation of poly(ethylene naphthalate) enclosures for high-purity germanium detectors in liquid argon for ${}^{42}$K/${}^{42}$Ar mitigation

Christoph Vogl, Tommaso Comellato, Konstantin Gusev +10

Commercial argon contains cosmogenic ${}^{42}$Ar whose progeny ${}^{42}$K is a critical background component for the Large Enriched Germanium Experiment for Neutrinoless $\beta \beta$ Decay (LE…