Speaker
Description
nEXO aims to utilize 5 tonnes of enriched xenon to search for $^{136}$Xe neutrinoless double beta decay, with a 90% CL half-life sensitivity of 1.35 x 10$^{28}$ yr. To reach this half-life sensitivity, which covers the parameter space associated with the inverted neutrino mass ordering, many improvements have been made towards understanding the production and reconstruction of light and charge signals. nEXO is instrumented as a time projection chamber to detect the ionization and excitation signals from the liquid xenon medium. A substantial reduction in backgrounds is realized by the use of custom electroformed copper. To further reduce the already small background, there is ongoing R&D to actively remove radon by distillation. In this talk I shall discuss how our design choices lead to improved sensitivity.
