Scientific Results

CUORE: An experiment to investigate for neutrinoless double beta decay by cooling 750 kg of TeO2 crystals at 10mK

Year: 2006

Authors: Beeman J., Dolinski M., Gutierrez T.D., Haller E.E., Maruyama R., Smith A.R., Xu N., Giuliani A., Pedretti M., Sangiorgio S., Barucci M., Olivieri E., Risegari L., Ventura G., Balata M., Bucci C., Nisi S., Palmieri V., De Waard A., Norman E.B., Arnaboldi C., Brofferio C., Capelli S., Capozzi F., Carbone L., Clemenza M., Cremonesi O., Fiorini E., Nones C., Nucciotti A., Pavan M., Pessina G., Pirro S., Previtali E., Sisti M., Torres L., Zanotti L., Ardito R., Maier G., Guardincerri E., Ottonello P., Pallavicini M., Artusa D.R., Avignone F.T., Bandac I., Creswick R.J., Farach H.A., Rosenfeld C., Cebrian S., Gorla P., Irastorza I.G., Bellini F., Cosmelli C., Dafinei I., Diemoz M., Ferroni F., Gargiulo C., Longo E., Morganti S.

Autors Affiliation: Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Dep. of Material Science and Engineering, University of California, Berkeley, CA 94720, United States; Dipartimento di Scienze Chi., Fis. e Mat., Università dell\’Insubria, Sez. INFN di Milano, 22100 Como, Italy; Dipartimento di Fisica, Università di Firenze, Sez. INFN di Firenze, 50125 Firenze, Italy; Laboratori Nazionali Del Gran Sasso, INFN, 67010 Assergi (L\’Aquila), Italy; Laboratori Nazionali di Legnaro, INFN, Via Romea 4, 35020 Legnaro (Padova), Italy; Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, Netherlands; Lawrence Livermore National Laboratory, Livermore, CA 94550, United States; Dipartimento di Fisica, Università di Milano-Bicocca, Sez. INFN di Milano, 20126 Milano, Italy; Dipartimento di Ingegneria Strutturale, Politecnico di Milano, 20133 Milano, Italy; Dipartimento di Fisica, Università di Genova, Sez. INFN di Genova, 16146 Genova, Italy; Department of Physics and Astronomy, University of South Carolina, Columbia, SC 29208, United States; Laboratorio de Fisica Nuclear y Alta Energias, Universitad de Zaragoza, 50009 Zaragoza, Spain; Dipartimento di Fisica, Università di Roma la Sapienza, Sez. INFN di Romal, 00185 Roma, Italy

Abstract: CUORE (Cryogenic Underground Observatory for Rare Events) is an experiment proposed to infer the effective Majorana mass of the electron neutrino from measurements on neutrinoless double beta decay (0?DBD). The goal of CUORE is to achieve a background rate in the range 0.001 to 0.01 counts/keV/kg/y at the 0?DBD transition energy of 130Te (2528 keV). The proposed experiment, to be mounted in the underground Gran Sasso INFN National Laboratory, Italy, is realized by cooling about 1000 TeO2 bolometers, of 750 g each, at a temperature of 10mK. We will describe the experiment, to be cooled by an extremely powerful dilution refrigerator, operating with no liquid helium, and the main experimental features designed to assure the predicted sensitivity. We present moreover the last results of a small scale (40.7 kg) 0?DBD experiment carried on in the Gran Sasso Laboratory (CUORICINO).

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More Information: This work was partially supported by supported by INFN under project CUORE, by the Commission of European Communities under contract HPRN-CT-2002-00322, by the US Department of Energy under contract number DE-AC03-76 SF 98 and by the National Science Foundation.
KeyWords: Double beta decay; Low temperature equipment; Neutrino mass
DOI: 10.1063/1.2355328

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