Validation of techniques to mitigate copper surface contamination in CUORE
Nuclear Experiment
2013-04-05 v4 High Energy Physics - Experiment
Instrumentation and Detectors
Abstract
In this article we describe the background challenges for the CUORE experiment posed by surface contamination of inert detector materials such as copper, and present three techniques explored to mitigate these backgrounds. Using data from a dedicated test apparatus constructed to validate and compare these techniques we demonstrate that copper surface contamination levels better than 10E-07 - 10E-08 Bq/cm2 are achieved for 238U and 232Th. If these levels are reproduced in the final CUORE apparatus the projected 90% C.L. upper limit on the number of background counts in the region of interest is 0.02-0.03 counts/keV/kg/y depending on the adopted mitigation technique.
Cite
@article{arxiv.1210.1107,
title = {Validation of techniques to mitigate copper surface contamination in CUORE},
author = {F. Alessandria and R. Ardito 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 T. Bloxham and C. Brofferio and C. Bucci and X. Z. Cai and L. Canonica and S. Capelli and L. Carbone and L. Cardani and M. Carrettoni and N. Casali 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 A. De Biasi and M. M. Deninno and S. Di Domizio and M. L. di Vacri and L. Ejzak and R. Faccini and D. Q. Fang and H. A. Farach and E. Ferri and F. Ferroni and E. Fiorini and M. A. Franceschi and S. J. Freedman and B. K. Fujikawa and A. Giachero and L. Gironi and A. Giuliani and J. Goett and A. Goodsell and P. Gorla and C. Gotti and E. Guardincerri and T. D. Gutierrez and E. E. Haller and K. Han and K. M. Heeger and H. Z. Huang and R. Kadel and K. Kazkaz and G. Keppel and L. Kogler and Yu. G. Kolomensky and D. Lenz and Y. L. Li and C. Ligi 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 T. Napolitano and S. Newman and S. Nisi and C. Nones and E. B. Norman and A. Nucciotti 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 S. Pirro and E. Previtali and V. Rampazzo and R. Reil and F. Rimondi and C. Rosenfeld and C. Rusconi and S. Sangiorgio and N. D. Scielzo and M. Sisti and A. R. Smith and L. Sparks and F. Stivanello and L. Taffarello and M. Tenconi 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 C. A. Whitten and T. Wise and A. Woodcraft and L. Zanotti and C. Zarra and B. X. Zhu and S. Zucchelli},
journal= {arXiv preprint arXiv:1210.1107},
year = {2013}
}
Comments
10 pages, 6 figures, 6 tables