Speaker
Description
Liquid xenon time projection chambers (LXe TPCs) represent the forefront of sensitivity in WIMP dark matter direct detection. The goal of the next-generation experiment XLZD (XENON-LZ-DARWIN) is to explore the WIMP parameter space down to the neutrino fog, where coherent neutrino-nucleus scattering dominates. Achieving this demands a combination of ultra-low background levels and a tenfold increase in active target mass compared to current detectors. The XLZD detector is designed for a 60-tonne active mass. Together with further improvements on radon and neutron backgrounds, this opens up a plethora of science channels, including the neutrino-less double-beta decay of ^{136}Xe, axions and axion-like particles, neutrinos from supernovae and different rare nuclear processes. A broad R&D program is currently addressing technical challenges towards the realization of the experiment. Key areas include scaling up dual-phase TPC technology while ensuring ultra-low radioactivity materials, advanced purification techniques, and enhanced detection efficiencies. This presentation will delve into the progress of the R&D program that combines the expertise of three international collaborations.
