Initial Results from CERES, the Cryogenic Experiment to Reconstruct Energy Systematics in TeO2 bolometers

ORAL

Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) experiment, located beneath the Gran Sasso National Laboratory in Italy, employs an array of TeO2 crystals operated at millikelvin temperatures to search for rare neutrinoless double beta decay (0ν𝛃𝛃) events.

A precise understanding of the energy systematics is vital for the operation of the experiment, given the extremely narrow, delta-like peak in the energy spectrum predicted for 0ν𝛃𝛃. Recent studies have indicated that the energy resolution of these calorimetric detectors may also depend on the topological features of the events. Beyond quantifying systematics, understanding this position-dependent effect could allow for the discrimination between bulk signal events and background surface events from degraded alphas. This would allow for a nearly backgroundless experiment.  

This presentation will detail the design and implementation of an experiment, CERES, to measure these systematic effects, and will include results from prototype runs.

*This work is supported by the US DOE Office of Nuclear Physics, the US NSF, and internal investments at all institutions.

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Presenters

  • Yael Zayats

    • University of California, Berkeley

Authors

  • Enzo D Brandani

    • University of California, Berkeley

  • Yael Zayats

    • University of California, Berkeley

  • Tong Zhu

    • University of California, Berkeley

  • Yury G Kolomensky

    • University of California, Berkeley