1. Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment
- Author
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D.R. Artusa, F.T. Avignone, III, J.W. Beeman, I. Dafinei, L. Dumoulin, Z. Ge, A. Giuliani, C. Gotti, P. de Marcillac, S. Marnieros, S. Nagorny, S. Nisi, C. Nones, E.B. Norman, V. Novati, E. Olivieri, D. Orlandi, L. Pagnanini, L. Pattavina, G. Pessina, S. Pirro, D.V. Poda, C. Rusconi, K. Schäffner, N.D. Scielzo, and Y. Zhu
- Subjects
Double beta decay ,Bolometers ,Isotope enrichment ,Cherenkov emission ,Neganov–Luke effect ,Physics ,QC1-999 - Abstract
We present the performances of two 92% enriched 130TeO2 crystals operated as thermal bolometers in view of a next generation experiment to search for neutrinoless double beta decay of 130Te. The crystals, 435 g each, show an energy resolution, evaluated at the 2615 keV γ-line of 208Tl, of 6.5 and 4.3 keV FWHM. The only observable internal radioactive contamination arises from 238U (15 and 8 μBq/kg, respectively). The internal activity of the most problematic nuclei for neutrinoless double beta decay, 226Ra and 228Th, are both evaluated as
- Published
- 2017
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