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Analysis of dissolved radon calibration sources in EXO-200

ORAL

Abstract

The EXO-200 experiment, which ran from 2011 to 2018, used enriched liquid xenon in a low-background single-phase time projection chamber to search for neutrinoless double beta decay of ${}^{136}$Xe. At the end of physics running, the xenon volume was doped first with ${}^{220}$Rn and then several days later with ${}^{222}$Rn to test these alpha-emitting decay chains as light calibration sources. This talk will discuss the source deployments and data collection, analysis of resulting decay chain events in EXO-200, and implications for using injected radon sources to calibrate light response for single-phase liquid xenon time projection chambers.

Authors

  • Erin Hansen

    Department of Physics, UC Berkeley, University of California, Berkeley