Enriched TeO${}_2$ bolometers with active particle discrimination: towards the CUPID experiment

Abstract

We present the performances of two 92% enriched ${}^{130}$TeO${}_2$ crystals operated as thermal bolometers in view of a next generation experiment to search for neutrinoless double beta decay of ${}^{130}$Te. The crystals, 435 g each, show an energy resolution, evaluated at the 2615 keV $\gamma$-line of ${}^{208}$Tl, of 6.5 and 4.3 keV FWHM. The only observable internal radioactive contamination arises from ${}^{238}$U (15 and 8 $\mu$Bq/kg, respectively). The internal activity of the most problematic nuclei for neutrinoless double beta decay, ${}^{226}$Ra and ${}^{228}$Th, are both evaluated as $<$3.1 $\mu$Bq/kg for one crystal and $<$2.3 $\mu$Bq/kg for the second. Thanks to the readout of the weak Cherenkov light emitted by $\beta /\gamma$ particles by means of Neganov-Luke bolometric light detectors we were able to perform an event-by-event identification of $\beta /\gamma$ events with a 95% acceptance level, while establishing a rejection factor of 98.21% and 99.99% for $\alpha$ particles.

References in corpus (27)

• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Search for Majorana Neutrinos near the Inverted Mass Hierarchy Region with KamLAND-Zen
• Search for Majorana neutrinos with the first two years of EXO-200 data
• WIMP-Search Results from the Second CDMSlite Run
• Neutrino masses and mixings: Status of known and unknown $3\nu$ parameters
• Search for Neutrinoless Double-Beta Decay of ${}^{130}$Te with CUORE-0
• Searching for neutrinoless double-beta decay of ${}^{130}$Te with CUORE
• Scintillating double beta decay bolometers
• Production of high purity TeO2 single crystals for the study of neutrinoless double beta decay
• Measurement of the inclusive 3-jet production differential cross section in proton-proton collisions at 7 TeV and determination of the strong coupling constant in the TeV range
• Analysis Techniques for the Evaluation of the Neutrinoless Double-Beta Decay Lifetime in ${}^{130}$Te with CUORE-0
• Validation of techniques to mitigate copper surface contamination in CUORE
• CUORE-0 detector: design, construction and operation
• Initial performance of the CUORE-0 experiment
• First array of enriched Zn${}^{82}$Se bolometers to search for double beta decay
• CUORE crystal validation runs: results on radioactive contamination and extrapolation to CUORE background
• Characterization of bolometric Light Detectors for rare event searches
• Search for direct top squark pair production in final states with two tau leptons in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• TeO${}_2$ bolometers with Cherenkov signal tagging: towards next-generation neutrinoless double beta decay experiments
• Investigation of radioactivity-induced backgrounds in EXO-200
• Discrimination of alpha and beta/gamma interactions in a TeO${}_2$ bolometer
• Optimizing the energy threshold of light detectors coupled to luminescent bolometers
• Particle Discrimination in TeO${}_2$ Bolometers using Light Detectors read out by Transition Edge Sensors
• Background suppression in massive TeO${}_2$ bolometers with Neganov-Luke amplified light detectors
• Neganov-Luke amplified cryogenic light detectors for the background discrimination in neutrinoless double beta decay search with TeO${}_2$ bolometers
• Cerenkov light identification with Si low-temperature detectors with Neganov-Luke effect-enhanced sensitivity
• R&D towards CUPID (CUORE Upgrade with Particle IDentification)

Cited by in corpus (25)

• Neutrinoless Double-Beta Decay: Status and Prospects
• Toward the discovery of matter creation with neutrinoless double-beta decay
• Development of ${}^{100}$Mo-containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search
• Impact of the quenching of $g_{\mathrm{A}}$ on the sensitivity of $0\nu \beta \beta$ experiments
• Low background techniques in bolometers for double-beta decay search
• Superconducting detectors for rare event searches in experimental astroparticle physics
• Quenching of $g_{\mathrm{A}}$ deduced from the $\beta$-spectrum shape of ${}^{113}$Cd measured with the COBRA experiment
• The $0\nu 2\beta$-decay CROSS experiment: preliminary results and prospects
• Complete event-by-event $\alpha$/$\gamma (\beta )$ separation in a full-size TeO${}_2$ CUORE bolometer by Neganov-Luke-magnified light detection
• Charge-to-heat transducers exploiting the Neganov-Trofimov-Luke effect for light detection in rare-event searches
• The saga of neutrinoless double beta decay search with TeO2 thermal detectors
• Cryogenic light detectors with enhanced performance for rare events physics
• A multi-isotope $0\nu 2\beta$ bolometric experiment
• Radiopure tungstate and molybdate crystal scintillators for double beta decay experiments
• Radiopurity of a kg-scale PbWO${}_4$ cryogenic detector produced from archaeological Pb for the RES-NOVA experiment
• Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers
• Results of the first NaI scintillating calorimeter prototypes by COSINUS
• BINGO innovative assembly for background reduction in bolometric $0\nu \beta \beta$ experiments
• A lab scale experiment for keV sterile neutrino search
• Lepton number violating operators with standard model gauge fields: A survey of neutrino masses from 3-loops and their link to dark matter
• Combining Hybrid and Opaque Scintillator Techniques in the Search for Double Beta Plus Decays
• Double Beta Decay Experiments at Canfranc Underground Laboratory
• Development of large-volume ${}^{130}$TeO${}_2$ bolometers for the CROSS $2\beta$ decay search experiment
• The Decay Q Value of Neutrinoless Double Beta Decay
• Online triggers for supernova and pre-supernova neutrino detection with cryogenic detectors