The LUX-ZEPLIN (LZ) Experiment

Abstract

We describe the design and assembly of the LUX-ZEPLIN experiment, a direct detection search for cosmic WIMP dark matter particles. The centerpiece of the experiment is a large liquid xenon time projection chamber sensitive to low energy nuclear recoils. Rejection of backgrounds is enhanced by a Xe skin veto detector and by a liquid scintillator Outer Detector loaded with gadolinium for efficient neutron capture and tagging. LZ is located in the Davis Cavern at the 4850' level of the Sanford Underground Research Facility in Lead, South Dakota, USA. We describe the major subsystems of the experiment and its key design features and requirements.

References in corpus (9)

• Results from a search for dark matter in the complete LUX exposure
• The Large Underground Xenon (LUX) Experiment
• Systematic study of trace radioactive impurities in candidate construction materials for EXO-200
• Low-energy (0.7-74 keV) nuclear recoil calibration of the LUX dark matter experiment using D-D neutron scattering kinematics
• Low Background Gamma Spectroscopy at the Boulby Underground Laboratory
• ${}^{83\text{m}}$Kr calibration of the 2013 LUX dark matter search
• Measurement of the absolute reflectance of polytetrafluoroethylene (PTFE) immersed in liquid xenon
• A simple high-sensitivity technique for purity analysis of xenon gas
• Reflectance dependence of polytetrafluoroethylene on thickness for xenon scintillation light