Update on External Background Characterization of Homestake Mine for Sanford Lab and DUSEL

ORAL

Abstract

Measuring and monitoring external sources of background at Sanford Lab/DUSEL are important to the planned low background experiments. The fluxes of cosmic-ray muon, gamma-ray, neutron, and radon at several levels of depth are being measured for more than one year at the Homestake Mine. We report the updated results on: (1) cosmic-ray muon flux; (2) the measurement of long-term high energy gamma ray induced by muon bremsstrahlung process; (3) neutron flux; and radon survey.

*This work is supported by the NSF Grant PHY-0758120.

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Authors

  • Chao Zhang

    • University of South Dakota
    • Post-doc

  • Dongming Mei

    • University of South Dakota

  • Keenan Thomas

    • University of South Dakota

  • Fred Gray

    • Regis University

  • Jaret Heise

    • Sanford Laboratory

  • Dan Durben

    • Black Hills State University