European Physical Journal C: Particles and Fields (Sep 2018)

Analysis of cryogenic calorimeters with light and heat read-out for double beta decay searches

  • O. Azzolini,
  • M. T. Barrera,
  • J. W. Beeman,
  • F. Bellini,
  • M. Beretta,
  • M. Biassoni,
  • E. Bossio,
  • C. Brofferio,
  • C. Bucci,
  • L. Canonica,
  • S. Capelli,
  • L. Cardani,
  • P. Carniti,
  • N. Casali,
  • L. Cassina,
  • M. Clemenza,
  • O. Cremonesi,
  • A. Cruciani,
  • A. D’Addabbo,
  • I. Dafinei,
  • S. Di Domizio,
  • F. Ferroni,
  • L. Gironi,
  • A. Giuliani,
  • P. Gorla,
  • C. Gotti,
  • G. Keppel,
  • M. Martinez,
  • S. Morganti,
  • S. Nagorny,
  • M. Nastasi,
  • S. Nisi,
  • C. Nones,
  • D. Orlandi,
  • L. Pagnanini,
  • M. Pallavicini,
  • V. Palmieri,
  • L. Pattavina,
  • M. Pavan,
  • G. Pessina,
  • V. Pettinacci,
  • S. Pirro,
  • S. Pozzi,
  • E. Previtali,
  • A. Puiu,
  • C. Rusconi,
  • K. Schäffner,
  • C. Tomei,
  • M. Vignati,
  • A. Zolotarova

DOI
https://doi.org/10.1140/epjc/s10052-018-6202-5
Journal volume & issue
Vol. 78, no. 9
pp. 1 – 11

Abstract

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Abstract The suppression of spurious events in the region of interest for neutrinoless double beta decay will play a major role in next generation experiments. The background of detectors based on the technology of cryogenic calorimeters is expected to be dominated by $$\alpha $$ α particles, that could be disentangled from double beta decay signals by exploiting the difference in the emission of the scintillation light. CUPID-0, an array of enriched Zn$$^{82}$$ 82 Se scintillating calorimeters, is the first large mass demonstrator of this technology. The detector started data-taking in 2017 at the Laboratori Nazionali del Gran Sasso with the aim of proving that dual read-out of light and heat allows for an efficient suppression of the $$\alpha $$ α background. In this paper we describe the software tools we developed for the analysis of scintillating calorimeters and we demonstrate that this technology allows to reach an unprecedented background for cryogenic calorimeters.