LZ (LuxZeplin) is a next generation dark matter experiment. It has been selected by the US Department of Energy (DOE) and the US National Science Foundation as one of the three ‘G2’ (for Generation 2) dark matter experiments. Located at the 4850′ level of the Sanford Underground Research Facility in Lead, SD, the experiment utilizes a two-phase time projection chamber (TPC), containing seven active tonnes of liquid xenon, to search for dark matter particles. Auxiliary veto detectors, including a liquid scintillator outer detector, improve rejection of unwanted background events in the central region of the detector. LZ has been designed to improve on the sensitivity of the prior generation of experiment by a factor of 50 or more. More details on the construction of the LZ detector can be found here, and the projected sensitivity of the experiment is described here.

The LZ collaboration consists of about 250 scientists in 39 institutions in the U.S., U.K., Portugal, Switzerland, South Korea and Australia. The name LZ stems from the merger of two dark matter detection experiments: LUX (Large Underground Xenon) and ZEPLIN (ZonEd Proportional scintillation in LIquid Noble gases).

This website is for LZ collaborators. The public LZ website is at http://lz.lbl.gov/