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High Energy Physics Seminar

Monday, November 16, 2020
4:00pm to 5:00pm
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Online Event
The LZ dark matter experiment: Development, construction and current status
Kelly Stifter, Stanford University,

LZ is a next generation dark matter search designed to significantly extend our sensitivity to WIMP dark matter candidates. At the core of the LZ experiment is a dual-phase xenon time projection chamber (TPC) with a 7 ton active mass. The detector has been assembled at the Sanford Underground Research Facility (SURF) in Lead, South Dakota and is now in the commissioning phase. After 1000 days of live time, LZ will achieve a sensitivity of about 1.4 x 10-48 cm2 at 40 GeV/c2 WIMP mass, improving on previous results by over an order of magnitude. In this talk, I will give an overview of the development, construction and current commissioning status of the experiment, focusing in particular on the liquid xenon detector at the core of LZ. I will highlight the design and implementation of key features that drive the sensitivity of the experiment, including scintillation and ionization detection thresholds and control of backgrounds.

Meeting ID: 880 2304 8308