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Data-driven background model for the CUORE experiment

Name: Data-driven background model for the CUORE experiment
Keywords: Physics - Instrumentation and Detectors, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], energy spectrum, 610, FOS: Physical sciences, background, model, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 530, Bayesian, Neutrino Masses; Bolometer; Half-Life

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 11 Sep 2024Embargo end date: 01 Jan 2024 Italy, France, France, United States, Italy, France, Italy Publisher:American Physical Society (APS)Journal:Physical Review D, volume 110 (issn: 2470-0010, eissn: 2470-0029,

Copyright policy )Funded by:NSF | CUORE: Phase-I Constructi..., NSF | CUORE and MAJORANA:Next G..., NSF | RUI: A Program of Undergr... +6 projects

Authors: CUORE Collaboration; Adams, D. Q.; Alduino, C.; Alfonso, K.; Avignone, F. T.; Azzolini, O.; Bari, G.; +111 Authors

doi: 10.1103/physrevd.110.052003 , 10.48550/arxiv.2405.17937

arXiv: http://arxiv.org/abs/2405.17937 , 2405.17937

handle: 10281/525257 , 11573/1720701 , 11567/1223778

Data-driven background model for the CUORE experiment

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Abstract

We present the model we developed to reconstruct the CUORE radioactive background based on the analysis of an experimental exposure of 1038.4 kg yr. The data reconstruction relies on a simultaneous Bayesian fit applied to energy spectra over a broad energy range. The high granularity of the CUORE detector, together with the large exposure and extended stable operations, allow for an in-depth exploration of both spatial and time dependence of backgrounds. We achieve high sensitivity to both bulk and surface activities of the materials of the setup, detecting levels as low as 10 nBq kg$^{-1}$ and 0.1 nBq cm$^{-2}$, respectively. We compare the contamination levels we extract from the background model with prior radio-assay data, which informs future background risk mitigation strategies. The results of this background model play a crucial role in constructing the background budget for the CUPID experiment as it will exploit the same CUORE infrastructure.

Countries

Italy, France, France, United States, Italy, France, Italy

Related Organizations

INFN Sezione di Milano Bicocca
Italy
Lawrence Berkeley National Laboratory
United States
Sapienza University of Rome
Italy
University of Paris-Saclay
France
Alma Mater Studiorum University of Bologna
Italy

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Keywords

Physics - Instrumentation and Detectors, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], energy spectrum, 610, FOS: Physical sciences, background, model, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 530, Bayesian, Neutrino Masses; Bolometer; Half-Life, NSD-Neutrinos, background, time dependence, surface, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), Nuclear Experiment, Instrumentation and Methods for Astrophysics (astro-ph.IM), Cancer, bolometers; background model; Majorana neutrino, CUORE, model, background, Instrumentation and Detectors (physics.ins-det), stability, Nuclear and Plasma Physics, sensitivity, Nuclear Experiment; Nuclear Experiment; astro-ph.IM; Physics - Instrumentation and Detectors, background, radioactivity, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], radioactivity, Physical Sciences, time dependence, Astrophysics - Instrumentation and Methods for Astrophysics

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Funded byView all

NSF| CUORE: Phase-I Construction and Crystal Bolometer Research and Development, NSF| CUORE and MAJORANA:Next Generation Neutrino-Less Double-Beta Experiments, NSF| RUI: A Program of Undergraduate Participation in the Search for Rare Events with CUORE, NSF| Next Generation Double-Beta Experimints:CUORE/CUORICINO and Majorana

Related to Research communities

Energy Research