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Scintillating Bolometers for Rare Events Searches: The LUCIFER Experiment

Authors
  • Cardani, L.1, 2
  • 1 Sapienza Università di Roma, Rome, 00185, Italy , Rome (Italy)
  • 2 INFN Sezione di Roma, Rome, Italy , Rome (Italy)
Type
Published Article
Journal
Journal of Low Temperature Physics
Publisher
Springer US
Publication Date
Jan 14, 2014
Volume
176
Issue
5-6
Pages
973–978
Identifiers
DOI: 10.1007/s10909-013-1030-3
Source
Springer Nature
Keywords
License
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Abstract

The main goal of LUCIFER is the study of the neutrino-less double beta decay, a rare process that, if detected, could demonstrate the Majorana nature of neutrino and set the absolute mass of this particle. Dealing with rare decays, one of the most critical issues of the experiment is the background reduction. This requirement will be satisfied by LUCIFER thanks to the use of Zn82\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^{82}$$\end{document}Se scintillating bolometers: the simultaneous read-out of heat and light emitted by the interactions in the detector will allow to reject most of the spurious events, providing a background of 10-3\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^{-3}$$\end{document} counts/keV/kg/year at the transition energy of 82\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^{82}$$\end{document}Se (2,997 keV). The detector will be made by tens of ∼\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\sim $$\end{document}0.5 kg ZnSe crystals and Ge light detectors operated as bolometers at 10 mK. We present the results obtained with a single detector module in terms of energy resolution, radio-purity and background rejection capability. In addition, we discuss the feasibility of dark matter searches in the framework of the LUCIFER experiment.

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