CUORE crystal validation runs: results on radioactive contamination and   extrapolation to CUORE background

F. Alessandria; E. Andreotti; R. Ardito; C. Arnaboldi; F. T. Avignone; III; M. Balata; I. Bandac; T. I. Banks; G. Bari; J. W. Beeman; F. Bellini; A.; Bersani; M. Biassoni; T. Bloxham; C. Brofferio; A. Bryant; C. Bucci; X. Z.; Cai; L. Canonica; S. Capelli; L. Carbone; L. Cardani; M. Carrettoni; N.; Chott; M. Clemenza; C. Cosmelli; O. Cremonesi; R. J. Creswick; I. Dafinei; A.; Dally; A. De Biasi; M. P. Decowski; M. M. Deninno; A. de Waard; S. Di; Domizio; L. Ejzak; R. Faccini; D. Q. Fang; H. Farach; E. Ferri; F. Ferroni,; E. Fiorini; L. Foggetta; S. Freedman; G. Frossati; A. Giachero; L. Gironi; A.; Giuliani; P. Gorla; C. Gotti; E. Guardincerri; T. D. Gutierrez; E. E. Haller,; K. Han; K. M. Heeger; H. Z. Huang; K. Ichimura; R. Kadel; K. Kazkaz; G.; Keppel; L. Kogler; Y. G. Kolomensky; S. Kraft; D. Lenz; Y. L. Li; X. Liu; E.; Longo; Y. G. Ma; C. Maiano; G. Maier; C. Martinez; M. Martinez; R. H.; Maruyama; N. Moggi; S. Morganti; S. Newman; S. Nisi; C. Nones; E. B. Norman,; A. Nucciotti; F. Orio; D. Orlandi; J. Ouellet; M. Pallavicini; V. Palmieri,; L. Pattavina; M. Pavan; M. Pedretti; G. Pessina; S. Pirro; E. Previtali; V.; Rampazzo; F. Rimondi; C. Rosenfeld; C. Rusconi; C. Salvioni; S. Sangiorgio,; D. Schaeffer; N. D. Scielzo; M. Sisti; A. R. Smith; F. Stivanello; L.; Taffarello; G. Terenziani; W. D. Tian; C. Tomei; S. Trentalange; G. Ventura,; M. Vignati; B. Wang; H. W. Wang; C. A. Whitten Jr; T. Wise; A. Woodcraft; N.; Xu; L. Zanotti; C. Zarra; B. X. Zhu; S. Zucchelli

arXiv:1108.4757·nucl-ex·May 30, 2015

CUORE crystal validation runs: results on radioactive contamination and extrapolation to CUORE background

F. Alessandria, E. Andreotti, R. Ardito, C. Arnaboldi, F. T. Avignone, III, M. Balata, I. Bandac, T. I. Banks, G. Bari, J. W. Beeman, F. Bellini, A., Bersani, M. Biassoni, T. Bloxham, C. Brofferio, A. Bryant, C. Bucci, X. Z., Cai, L. Canonica, S. Capelli, L. Carbone, L. Cardani

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TL;DR

This paper reports on the validation of TeO₂ crystals for the CUORE experiment, focusing on their radioactive purity and how these results inform background estimates for the detector.

Contribution

It presents the first five validation runs of CUORE crystals, analyzing their radioactive contamination levels and extrapolating these to predict background contributions.

Findings

01

Bulk and surface contamination levels measured

02

Radioactive contamination results used to estimate background

03

Validation confirms suitability of crystals for CUORE

Abstract

The CUORE Crystal Validation Runs (CCVRs) have been carried out since the end of 2008 at the Gran Sasso National Laboratories, in order to test the performances and the radiopurity of the TeO $_{2}$ crystals produced at SICCAS (Shanghai Institute of Ceramics, Chinese Academy of Sciences) for the CUORE experiment. In this work the results of the first 5 validation runs are presented. Results have been obtained for bulk contaminations and surface contaminations from several nuclides. An extrapolation to the CUORE background has been performed.

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