New CUORICINO results and status of CUORE

Journal Article · Fri Dec 15 00:00:00 EST 2006 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778806120118· OSTI ID:21076156

Cremoniesi, O; Ardito, R; Arnaboldi, C ^[1]; Artusa, D R; Balata, M ^[2]; Bandac, I ^[3]; Barucci, M ^[4]; Beeman, J W ^[5]; Bellini, F ^[6]; Brofferio, C ^[1]; Bucci, C ^[2]; Capelli, S; Capozzi, F; Carbone, L ^[1]; Cebrian, S ^[7]; Clemenza, M ^[1]; Cosmelli, C ^[6]; Creswick, R J ^[3]; Dafinei, I ^[6]

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1. Dipartimento di Fisica dell'Universita di Milano-Bicocca e Sezione di Milano dell'INFN (Italy)
2. Laboratori Nazionali del Gran Sasso (Italy)
3. University of South Carolina, Department of Physics and Astronomy (United States)
4. Dipartimento di Fisica dell'Universita di Firenze e Sezione di Firenze dell'INFN (Italy)
5. Lawrence Berkeley National Laboratory (United States)
6. Dipartimento di Fisica dell'Universita di Roma e Sezione di Roma 1 dell'INFN (Italy)
7. Universitad de Zaragoza, Laboratorio de Fisica Nuclear y Alta Energias (Spain)

CUORICINO is an array of 62 TeO{sub 2} bolometers with a total mass of 40.7 kg (11.2 kg of {sup 130}Te), operated at about 10 mK to search for {beta}{beta}(0{nu}) of {sup 130}Te. The detectors are organized as a 14-story tower and intended as a slightly modified version of one of the 19 towers of the CUORE project, a proposed tightly packed array of 988 TeO{sub 2} bolometers (741 kg of total mass of TeO{sub 2}) for ultralow-background searches on neutrinoless double-beta decay, cold dark matter, solar axions, and rare nuclear decays. Started in April 2003 at the Laboratori Nazionali del Gran Sasso (LNGS), CUORICINO data taking was stopped in November 2003 to repair the readout wiring system of the 62 bolometers. Restarted in spring 2004, CUORICINO is presently the most sensitive running experiment on neutrinoless double-beta decay. No evidence for {beta}{beta}(0{nu}) decay has been found so far and a new lower limit, T{sub 1}{sup 2/0{nu}} {>=} 1.8 x 10{sup 24} yr (90% C.L.), is set, corresponding to <m{sub {nu}}> {<=} 0.2-1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis. Detector performance, operational procedures, and background analysis results are reviewed. The expected performance and sensitivity of CUORE is also discussed.

• OSTI ID: 21076156
• Journal Information: Physics of Atomic Nuclei, Vol. 69, Issue 12; Other Information: DOI: 10.1134/S1063778806120118; Copyright (c) 2006 Nauka/Interperiodica; Article Copyright (c) 2006 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AXIONS
BOLOMETERS
DOUBLE BETA DECAY
EV RANGE 01-10
LIQUEFIED NATURAL GAS
MASS
NEUTRINOS
NONLUMINOUS MATTER
NUCLEAR DECAY
NUCLEAR MATRIX
PERFORMANCE
RADIATION DETECTORS
READOUT SYSTEMS
REPAIR
SENSITIVITY
TELLURIUM 130
TELLURIUM OXIDES
TEMPERATURE RANGE 0000-0013 K