First test of an enriched ${}^{116}$CdWO${}_4$ scintillating bolometer for neutrinoless double-beta-decay searches

Abstract

For the first time, a cadmium tungstate crystal scintillator enriched in ${}^{116}$Cd has been succesfully tested as a scintillating bolometer. The measurement was performed above ground at a temperature of 18 mK. The crystal mass was 34.5 g and the enrichment level ~82 %. Despite a substantial pile-up effect due to above-ground operation, the detector demonstrated a high energy resolution (2-7 keV FWHM in 0.2-2.6 MeV $\gamma$ energy range), a powerful particle identification capability and a high level of internal radiopurity. These results prove that cadmium tungstate is an extremely promising detector material for a next-generation neutrinoless double-beta decay bolometric experiment, like that proposed in the CUPID project (CUORE Upgrade with Particle IDentification).

References in corpus (4)

• Limits on the neutrino mass from neutrinoless double-$\beta$ decay
• Neutrinoless Double-Beta Decay: a Probe of Physics Beyond the Standard Model
• Average and recommended half-life values for two neutrino double beta decay
• Enriched Zn${}^{100}$MoO${}_4$ scintillating bolometers to search for $0\nu 2\beta$ decay of ${}^{100}$Mo with the LUMINEU experiment

Cited by in corpus (4)

• Low background techniques in bolometers for double-beta decay search
• Radiopure tungstate and molybdate crystal scintillators for double beta decay experiments
• Double Beta Decay APPEC Committee Report
• Test of ${}^{116}$CdWO${}_4$ and Li${}_2$MoO${}_4$ scintillating bolometers in the CROSS underground facility with upgraded detector suspension