Scintillating double-beta-decay bolometers

Pirro, S.; Beeman, J. W.; Capelli, S.; Pavan, M.; Previtali, E.; Gorla, P.

doi:10.1134/s1063778806120155

Cited by 158 publications

(197 citation statements)

References 16 publications

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“…The particle identification comes then from the different light yield for different particle type. For scintillating crystals such as ZnSe, CdWO 4 , and ZnMoO 4 , the light yield difference between possible β β (0ν) electrons and α particles have been measured [41] and the background suppression concept demonstrated. It is worth noticing that the natural isotopic abundance of 82 Se, 116 Cd and 100 Mo are all less than 10 % so that isotopic enrichment is mandatory.…”

Section: Prospectsmentioning

confidence: 99%

CUORE-0 results and prospects for the CUORE experiment

Cremonesi

Artusa²,

Avignone³

et al. 2015

AIP Conference Proceedings

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Abstract.With 741 kg of TeO 2 crystals and an excellent energy resolution of 5 keV (0.2%) at the region of interest, the CUORE (Cryogenic Underground Observatory for Rare Events) experiment aims at searching for neutrinoless double beta decay of 130 Te with unprecedented sensitivity. Expected to start data taking in 2015, CUORE is currently in an advanced construction phase at LNGS. CUORE projected neutrinoless double beta decay half-life sensitivity is 1.6 × 10 26 y at 1σ (9.5 × 10 25 y at the 90 % confidence level), in five years of live time, corresponding to an upper limit on the effective Majorana mass in the range 40-100 meV (50-130 meV). Further background rejection with auxiliary bolometric detectors could improve CUORE sensitivity and competitiveness of bolometric detectors towards a full analysis of the inverted neutrino mass hierarchy. CUORE-0 was built to test and demonstrate the performance of the upcoming CUORE experiment. It consists of a single CUORE tower (52 TeO 2 bolometers of 750 g each, arranged in a 13 floor structure) constructed strictly following CUORE recipes both for materials and assembly procedures. An experiment its own, CUORE-0 is expected to reach a sensitivity to the β β (0ν) half-life of 130 Te around 3×10 24 y in one year of live time. We present an update of the data, corresponding to an exposure of 18.1 kg y. An analysis of the background indicates that the CUORE performance goal is satisfied while the sensitivity goal is within reach.

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Section: Prospectsmentioning

confidence: 99%

CUORE-0 results and prospects for the CUORE experiment

Cremonesi

Artusa²,

Avignone³

et al. 2015

AIP Conference Proceedings

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“…To this end, additional detection channels are needed, since the absorber does not respond differently for energy releases of different particle types. To distinguish signal electrons from α background, light emission can be used, either from Cherenkov radiation [22,23] or scintillation light [24,25,28,29], where the auxiliary light detector is usually another bolometer facing the main one. Recently new studies on scintillating bolometers showed the possibility to distinguish α from β/γ particles without light readout thanks to a different time-dependent shape of the heat signal [30,31].…”

Section: Beyond Cuorementioning

confidence: 99%

Neutrinoless double-beta decay search with CUORE and CUORE-0 experiments

Moggi

Artusa²,

Avignone³

et al. 2015

EPJ Web of Conferences

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Abstract. The Cryogenic Underground Observatory for Rare Events (CUORE) is an upcoming experiment designed to search for the neutrinoless double-beta decays. Observation of the process would unambiguously establish that neutrinos are Majorana particles and provide information on their absolute mass scale hierarchy. CUORE is now under construction and will consist of an array of 988 TeO 2 crystal bolometers operated at 10 mK, but the first tower (CUORE-0) is already taking data. The experimental techniques used will be presented as well as the preliminary CUORE-0 results. The current status of the full-mass experiment and its expected sensitivity will then be discussed.

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“…The arguments to develop CaMoO 4 are as follows: 100 Mo is one of the most promising candidate to search for neutrinoless double beta decay (a key process in the modern physics) [34]; CaMoO 4 contains valuable part of Mo (48%); CaMoO 4 does not contain radioactive elements; CaMoO 4 is a reasonably ecient scintillator even at room temperature [35]; CaMoO 4 is a promising material for low temperature scintillating bolometers (with high energy resolution and particle discrimination ability) [36,37].…”

Section: Yttrium Aluminum Perovskitementioning

confidence: 99%