Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment
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 <3.1 μBq/kg for one crystal and <2.3 μBq/kg for the second. Thanks to the readout of the weak Cherenkov light emitted by β/γ particles by means of Neganov–Luke bolometric light detectors we were able to perform an event-by-event identification of β/γ events with a 95% acceptance level, while establishing a rejection factor of 98.21% and 99.99% for α particles.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); The Regents of the Univ. of California, Berkeley, CA (United States). Nuclear Science and Security Consortium
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1343780
- Alternate Identifier(s):
- OSTI ID: 1378500; OSTI ID: 1379804; OSTI ID: 1405149
- Report Number(s):
- LLNL-JRNL-705527
Journal ID: ISSN 0370-2693; S0370269317301016; PII: S0370269317301016
- Grant/Contract Number:
- NA0000979; AC52-07NA27344; AC02-05CH11231; NA0003180
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 767 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Double beta decay; Bolometers; Isotope enrichment; Cherenkov emission; Neganov–Luke effect; 36 MATERIALS SCIENCE; double beta decay; bolometers; isotope enrichment; Neganov-Luke effect
Citation Formats
Artusa, D. R., Avignone, III, F. T., Beeman, J. W., Dafinei, I., Dumoulin, L., Ge, Z., Giuliani, A., Gotti, C., de Marcillac, P., Marnieros, S., Nagorny, S., Nisi, S., Norman, E. B., Novati, V., Olivieri, E., Orlandi, D., Pagnanini, L., Pattavina, L., Pessina, G., Pirro, S., Poda, D. V., Rusconi, C., Schäffner, K., Scielzo, N. D., and Zhu, Y. Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment. Netherlands: N. p., 2017.
Web. doi:10.1016/j.physletb.2017.02.011.
Artusa, D. R., Avignone, III, F. T., Beeman, J. W., Dafinei, I., Dumoulin, L., Ge, Z., Giuliani, A., Gotti, C., de Marcillac, P., Marnieros, S., Nagorny, S., Nisi, S., Norman, E. B., Novati, V., Olivieri, E., Orlandi, D., Pagnanini, L., Pattavina, L., Pessina, G., Pirro, S., Poda, D. V., Rusconi, C., Schäffner, K., Scielzo, N. D., & Zhu, Y. Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment. Netherlands. https://doi.org/10.1016/j.physletb.2017.02.011
Artusa, D. R., Avignone, III, F. T., Beeman, J. W., Dafinei, I., Dumoulin, L., Ge, Z., Giuliani, A., Gotti, C., de Marcillac, P., Marnieros, S., Nagorny, S., Nisi, S., Norman, E. B., Novati, V., Olivieri, E., Orlandi, D., Pagnanini, L., Pattavina, L., Pessina, G., Pirro, S., Poda, D. V., Rusconi, C., Schäffner, K., Scielzo, N. D., and Zhu, Y. Sat .
"Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment". Netherlands. https://doi.org/10.1016/j.physletb.2017.02.011.
@article{osti_1343780,
title = {Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment},
author = {Artusa, D. R. and Avignone, III, F. T. and Beeman, J. W. and Dafinei, I. and Dumoulin, L. and Ge, Z. and Giuliani, A. and Gotti, C. and de Marcillac, P. and Marnieros, S. and Nagorny, S. and Nisi, S. and Nones, C. and Norman, E. B. and Novati, V. and Olivieri, E. and Orlandi, D. and Pagnanini, L. and Pattavina, L. and Pessina, G. and Pirro, S. and Poda, D. V. and Rusconi, C. and Schäffner, K. and Scielzo, N. D. and Zhu, Y.},
abstractNote = {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 <3.1 μBq/kg for one crystal and <2.3 μBq/kg for the second. Thanks to the readout of the weak Cherenkov light emitted by β/γ particles by means of Neganov–Luke bolometric light detectors we were able to perform an event-by-event identification of β/γ events with a 95% acceptance level, while establishing a rejection factor of 98.21% and 99.99% for α particles.},
doi = {10.1016/j.physletb.2017.02.011},
journal = {Physics Letters B},
number = C,
volume = 767,
place = {Netherlands},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}
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https://doi.org/10.1016/j.physletb.2017.02.011
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