Cold trap mass spectrometry techniques and application for the LUX-ZEPLIN experiment
ORAL
Abstract
I explore the methods, usage, and contributions of cold trap mass spectrometry sampling systems to the LZ (LUX-ZEPLIN) liquid xenon dark matter experiment. Mass spectrometry sampling can reveal information about the purity of the xenon in the LZ experiment. Adding a cold trap to common mass spectrometry techniques can improve sensitivity, enabling us to see krypton at a level of tens of parts per quadrillion (ppq) i.e. one part in 10^14 (g/g). The technique has been used to determine a krypton concentration of 144 +/- 22 ppq in the LZ detector immediately after being filled in September of 2021. I will review this and other measurements made by cold trap mass spectrometry sampling systems for the LZ experiment in this talk.
*This work is supported by the US DOE Office of Science, Office of High Energy Physics; the U.K. Science & Technology Facilities Council; Portuguese Foundation for Science and Technology; and the Institute for Basic Science, Korea
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Presenters
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John Armstrong
- University of Maryland, College Park