Light-amplifying devices known as photomultiplier tubes (PMTs), developed for use in the LUX-ZEPLIN (LZ) dark matter-hunting experiment, are prepared for a test at Brown University. This test bed, dubbed PATRIC, will be used to test over 600 PMTs in conditions simulating the temperature and pressure of the liquid xenon that will be used for LZ. (Credit: Brown University)
Assembly of the prototype for the LZ detector’s core, known as a time projection chamber (TPC). From left: Jeremy Mock (State University of New York/Berkeley Lab), Knut Skarpaas, and Robert Conley. (Credit: SLAC National Accelerator Laboratory)
A production prototype of highly purified, gadolinium-doped scintillator fluid, viewed under ultraviolet light. Scintillator fluid will surround LZ’s xenon tank and will help scientists veto the background “noise” of unwanted particle signals. (Credit: Brookhaven National Laboratory)
A fish-eye view of the water tank where the LUX detector was deployed, and where the LZ detector will be deployed. The diameter of the tank is 25 feet, the height 20 feet, and it is filled with highly purified water.
Two of the photomultiplier tubes to be used in the LZ experiment. These are capable of detecting a single photon, they operate at -108 Celsius, and they have an extremely tiny quantity of natural radioactivity in their components.
The LZ collaboration meeting, University of Alabama, Tuscaloosa in 2015.
Young researchers working 1 mile underground in the Sanford Underground Research Facility’s Davis Laboratory. The floor is a deck above the water tank. Cables and electronics for the LUX detector are in the background.