Response of a TeO_2 bolometer to alpha particles

Abstract

$Te{O}_2$ crystals are used as bolometers in experiments searching for Double Beta Decay without emission of neutrinos. One of the most important issues in this extremely delicate kind of experiments is the characterization of the background. The knowledge of the response to $\alpha$ particles in the energy range where the signal is expected is therefore a must. In this paper we report the results on the response function of a $Te{O}_2$ bolometer to $\alpha$'s emitted by ${}^{147}$Sm dissolved in the crystal at the growth phase. A Quenching Factor of ($1.0076\pm 0.0005$) is found, independent of the temperature in the investigated range. The energy resolution on $\alpha$ peaks shows a standard calorimeter energy dependence: $\sigma [\mathrm{keV}]=(0.56\pm 0.02)\oplus (0.010\pm 0.002)\sqrt{\mathrm{E}[\mathrm{keV}]}$. Signal pulses show no difference between $\alpha$ and $\beta \gamma$ particles

References in corpus (6)

• CUORE: A Cryogenic Underground Observatory for Rare Events
• Results from a search for the $0\nu \beta \beta$-decay of ${}^{130}Te$
• Masses of 130Te, 130Xe and double-beta-decay Q-value of 130Te
• Production of high purity TeO2 single crystals for the study of neutrinoless double beta decay
• Double-beta decay Q values of 130Te, 128Te, and 120Te
• Model of the response function of large mass bolometric detectors

Cited by in corpus (14)

• Development of ${}^{100}$Mo-containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search
• Measurement of the Two-Neutrino Double Beta Decay Half-life of ${}^{130}$Te with the CUORE-0 Experiment
• ZnMoO4: a promising bolometer for neutrinoless double beta decay searches
• Validation of techniques to mitigate copper surface contamination in CUORE
• Low background techniques in bolometers for double-beta decay search
• Discrimination of alpha and beta/gamma interactions in a TeO${}_2$ bolometer
• Optimizing the energy threshold of light detectors coupled to luminescent bolometers
• The $0\nu 2\beta$-decay CROSS experiment: preliminary results and prospects
• Model for the Cherenkov light emission of TeO${}_2$ cryogenic calorimeters
• Signal and noise simulation of CUORE bolometric detectors
• Noise correlation and decorrelation in arrays of bolometric detectors
• BINGO innovative assembly for background reduction in bolometric $0\nu \beta \beta$ experiments
• Development of large-volume ${}^{130}$TeO${}_2$ bolometers for the CROSS $2\beta$ decay search experiment
• A CUPID Li${}_2$${}^{100}$MoO${}_4$ scintillating bolometer tested in the CROSS underground facility