Initial performance of the CUORE-0 experiment
Abstract
CUORE-0 is a cryogenic detector that uses an array of tellurium dioxide bolometers to search for neutrinoless double-beta decay of ^{130}Te. We present the first data analysis with 7.1 kg y of total TeO_2 exposure focusing on background measurements and energy resolution. The background rates in the neutrinoless double-beta decay region of interest (2.47 to 2.57 MeV) and in the {\alpha} background-dominated region (2.70 to 3.90 MeV) have been measured to be 0.071 \pm 0.011 and 0.019 \pm 0.002 counts/keV/kg/y, respectively. The latter result represents a factor of 6 improvement from a predecessor experiment, Cuoricino. The results verify our understanding of the background sources in CUORE-0, which is the basis of extrapolations to the full CUORE detector. The obtained energy resolution (full width at half maximum) in the region of interest is 5.7 keV. Based on the measured background rate and energy resolution in the region of interest, CUORE-0 half-life sensitivity is expected to surpass the observed lower bound of Cuoricino with one year of live time.
Keywords
Cite
@article{arxiv.1402.0922,
title = {Initial performance of the CUORE-0 experiment},
author = {CUORE Collaboration and D. R. Artusa and F. T. Avignone and O. Azzolini and M. Balata and T. I. Banks and G. Bari and J. Beeman and F. Bellini and A. Bersani and M. Biassoni and C. Brofferio and C. Bucci and X. Z. Cai and L. Canonica and X. G. Cao and S. Capelli and L. Carbone and L. Cardani and M. Carrettoni and N. Casali and D. Chiesa and N. Chott and M. Clemenza and C. Cosmelli and O. Cremonesi and R. J. Creswick and I. Dafinei and A. Dally and V. Datskov and M. M. Deninno and S. Di Domizio and M. L. di Vacri and L. Ejzak and D. Q. Fang and H. A. Farach and M. Faverzani and G. Fernandes and E. Ferri and F. Ferroni and E. Fiorini and S. J. Freedman and B. K. Fujikawa and A. Giachero and L. Gironi and A. Giuliani and J. Goett and P. Gorla and C. Gotti and T. D. Gutierrez and E. E. Haller and K. Han and K. M. Heeger and R. Hennings-Yeomans and H. Z. Huang and R. Kadel and K. Kazkaz and G. Keppel and Yu. G. Kolomensky and Y. L. Li and K. E. Lim and X. Liu and Y. G. Ma and C. Maiano and M. Maino and M. Martinez and R. H. Maruyama and Y. Mei and N. Moggi and S. Morganti and S. Nisi and C. Nones and E. B. Norman and A. Nucciotti and T. O'Donnell and F. Orio and D. Orlandi and J. L. Ouellet and M. Pallavicini and V. Palmieri and L. Pattavina and M. Pavan and M. Pedretti and G. Pessina and V. Pettinacci and G. Piperno and S. Pirro and E. Previtali and C. Rosenfeld and C. Rusconi and E. Sala and S. Sangiorgio and N. D. Scielzo and M. Sisti and A. R. Smith and L. Taffarello and M. Tenconi and F. Terranova and W. D. Tian and C. Tomei and S. Trentalange and G. Ventura and M. Vignati and B. S. Wang and H. W. Wang and L. Wielgus and J. Wilson and L. A. Winslow and T. Wise and L. Zanotti and C. Zarra and B. X. Zhu and S. Zucchelli},
journal= {arXiv preprint arXiv:1402.0922},
year = {2014}
}
Comments
8 pages, 5 figures, version 2 as published in Eur. Phys. J. C