The LZ Outer Detector

LUX-ZEPLIN (LZ) is a direct detection dark matter experiment containing 7 active tonnes of liquid xenon, 5.6 fiducial, to detect nuclear recoils from Weakly Interacting Massive Particles (WIMPs). Neutrons that scatter once in the inner time projection chamber (TPC) before exiting form a particularly dangerous background that is best mitigated through the use of active veto systems. To this end, LZ is equipped with an Outer Detector (OD) that consists of ten acrylic tanks filled with gadolinium-loaded liquid scintillator. These tanks encapsulate the TPC and provide 4π coverage for the efficient capture and detection of neutrons as well as gamma rays that scatter in the liquid xenon. In this talk I will give an overview of the LZ OD system and its performance.