Speaker: Victor Gehman

Title: Direct Search for Dark Matter with Two-phase Xenon Detectors: LUX and LZ

Abstract:

The search for dark matter reaches back generations and remains one of the most compelling endeavors in the hunt for physics beyond the Standard Model. Experiments attempting to directly detect weakly interacting massive particle (WIMP) dark matter have made remarkable progress in increasing their sensitivity to the elastic scattering of WIMPs on nuclei. The Large Underground Xenon (LUX) experiment is a 300-kg, two-phase, xenon time projection chamber, deployed at the Sanford Underground Research Facility (SURF), 4850 feet below Lead, SD. LUX is designed to be sensitive to a WIMP scattering cross section of 7e-46 square centimeters for a WIMP mass of 100 GeV. The detector is currently running underground in the Davis Laboratory at SURF. Successful operation of the LUX Detector is also an important milestone in the use of technologies proposed for ton-scale detectors, such as water shielding and thermosyphon cryogenics. In this seminar, we will present the current status of the LUX experiment, as well as plans for a follow-on, multi-ton-scale xenon experiment at SURF.