Optimizing the energy threshold of light detectors coupled to luminescent bolometers

Abstract

Bolometers have proven to be good detectors for the search of neutrinoless double beta decay. By operating at cryogenic temperatures, they feature excellent energy resolution and low background. The detection of the possible light emitted when particles interact in the bolometer is a promising method to lower the background of the experiments. The different amount of light emitted in beta/gamma and alpha interactions, whether due to scintillation or Cerenkov emission, allows to discriminate the two interaction types. Because of the cryogenic environment, light detectors are often bolometers. In this work we present a software algorithm to lower the energy threshold of bolometric light detectors coupled to luminescent bolometers. The application to data from Ge light detectors coupled to ZnMoO4 and TeO2 bolometers shows that the energy threshold can be lowered substantially, increasing the discrimination power when the amount of emitted light is small.

12 pages, 8 figures

References in corpus (6)

• 130Te Neutrinoless Double-Beta Decay with CUORICINO
• Performance of ZnMoO4 crystal as cryogenic scintillating bolometer to search for double beta decay of molybdenum
• Characterization of ZnSe scintillating bolometers for Double Beta Decay
• Lowering the energy threshold of large-mass bolometric detectors
• Response of a TeO_2 bolometer to alpha particles
• Model of the response function of large mass bolometric detectors

Cited by in corpus (26)

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• First Result on the Neutrinoless Double Beta Decay of ${}^{82}$Se with CUPID-0
• Performances of a large mass ZnSe bolometer to search for rare events
• Development of a Li2MoO4 scintillating bolometer for low background physics
• Gram-scale cryogenic calorimeters for rare-event searches
• ZnMoO4: a promising bolometer for neutrinoless double beta decay searches
• Performances of a large mass ZnMoO4 scintillating bolometer for a next generation neutrinoless double beta decay experiment
• First array of enriched Zn${}^{82}$Se bolometers to search for double beta decay
• TeO${}_2$ bolometers with Cherenkov signal tagging: towards next-generation neutrinoless double beta decay experiments
• New experimental limits on the alpha decays of lead isotopes
• Low background techniques in bolometers for double-beta decay search
• Enriched TeO${}_2$ bolometers with active particle discrimination: towards the CUPID experiment
• Discovery of the ${}^{151}$Eu $\alpha$ decay
• Discrimination of alpha and beta/gamma interactions in a TeO${}_2$ bolometer
• Analysis of cryogenic calorimeters with light and heat read-out for double beta decay searches
• Complete event-by-event $\alpha$/$\gamma (\beta )$ separation in a full-size TeO${}_2$ CUORE bolometer by Neganov-Luke-magnified light detection
• Cryogenic light detectors with enhanced performance for rare events physics
• Cerenkov light identification with Si low-temperature detectors with Neganov-Luke effect-enhanced sensitivity
• Na-based crystal scintillators for next-generation rare event searches
• An innovative technique for the investigation of the 4-fold forbidden beta-decay of ${}^{50}$V
• Test of ${}^{116}$CdWO${}_4$ and Li${}_2$MoO${}_4$ scintillating bolometers in the CROSS underground facility with upgraded detector suspension
• Twelve-crystal prototype of Li${}_2$MoO${}_4$ scintillating bolometers for CUPID and CROSS experiments
• Li${}_2$${}^{100\text{depl}}$MoO${}_4$ Scintillating Bolometers for Rare-Event Search Experiments
• A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment
• Cryogenic light detectors with thermal signal amplification for $0\nu \beta \beta$ search experiments