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Cryogenic Underground Observatory for Rare Events This experiment looks very promising for detection of neutrinoless double-beta decay. (A,Z)→(A,Z+2)+2e -. The CUORE Experiment For The Search Of 0 νββ Decay Lucia Cartegni. Experimental Setup. TeO 2 bolometers T=10 mK
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Cryogenic Underground Observatory for Rare Events This experiment looks very promising for detection of neutrinoless double-beta decay (A,Z)→(A,Z+2)+2e- The CUORE Experiment For The Search Of 0νββ DecayLucia Cartegni
Experimental Setup • TeO2 bolometers • T=10 mK • Te-130 isotopic abundance ~34% • ββ peak ~2.5 MeV • Energy resolution ~8keV • Total mass ~750 kg
Underground Low natural radioactivity Nitrogen atmosphere Roman lead shields Polyethylene shields Faraday cage Materials shipped by sea Clean surfaces →Background ~0.2 counts/(keV kg year) CUORICINO experiment (~40 kg) Lower limit for lifetime ~1.8x1024 years Neutrino mass ~0.2-1.1 eV Background Reduction First Results
Some References • R. Ardito et al., Cuore:A Cryogenic Underground Observatory for Rare Events, arXiv:hep-ex/0501010 (2005) • C. Arnaboldi et al., New Limit on the Neutrinoless ββ Decay of 130Te, Phys. Rev. Letters 95, 142501 (2005) • S. Pirro et al., Further Developments in the CUORICINO Experiment, Nucl. Instr. And Meth. In Physics Research A 559, 352 (2006) • F. T. Avignone et al, Next Generation double-beta decay experiments: metrics for their evaluation, New Journal of Physics 7 (2005), www.njp.org/ • P. Vogel, Neutrinoless double beta decay, arXiv:hep-ph/0611243 (2006)