Developing planar detectors for studying contact properties in liquid argon

ORAL

Abstract

Electrical contact property is an important parameter for a germanium detector. The stability of electrical contact when directly immersed in liquid argon (LAr) is important for LEGEND-type detectors dedicated to measuring neutrinoless double-beta decay using 76Ge as a target. LAr also acts as an active shield for backgrounds. Cosmic rays and gamma radiation that does not fully deposit their energy in the germanium detector can be rejected with LAr scintillation light veto. Ultra-high purity LAr helps to improve light yield and attenuation of the noise signal. This can help to reduce the background level. Background reduction in the search for neutrinoless double beta decay is crucial to reach the higher sensitivity limit on half-life. We plan to study the background rejection and contact properties of a planar germanium detector immersed in the LAr at MPI this summer and compare it to operating at LN temperature at USD.

*This work is supported by NSF OISE-1743790 and NSF PHY-1902577.

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Presenters

  • Rajendra Panth

    • University of South Dakota

Authors

  • Rajendra Panth

    • University of South Dakota

  • Wenzhao Wei

    • University of South Dakota

  • Xianghua Meng

    • University of South Dakota

  • Guojian Wang

    • University of South Dakota

  • Hao Mei

    • University of South Dakota, University of South Dakota
    • University of South Dakota

  • Jing Liu

    • University of South Dakota
    • University of South Dakota, University of South Dakota

  • Gang Yang

    • University of South Dakota

  • Dongming Mei

    • University of South Dakota
    • University of South Dakota, University of South Dakota