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The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects
- Source :
- Eur.Phys.J.C, Eur.Phys.J.C, 2020, 80 (1), pp.44. ⟨10.1140/epjc/s10052-019-7578-6⟩, European Physical Journal C, vol 80, iss 1, European Physical Journal C: Particles and Fields, European Physical Journal C: Particles and Fields, 2020, 80 (1), pp.44. ⟨10.1140/epjc/s10052-019-7578-6⟩, The European physical journal / C, 80 (1), Article: 44, European Physical Journal, European Physical Journal C: Particles and Fields, Vol 80, Iss 1, Pp 1-15 (2020)
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- CUPID-Mo is a bolometric experiment to search for neutrinoless double-beta decay ($0\nu\beta\beta$) of $^{100}$Mo. In this article, we detail the CUPID-Mo detector concept, assembly, installation in the underground laboratory in Modane in 2018, and provide results from the first datasets. The demonstrator consists of an array of 20 scintillating bolometers comprised of $^{100}$Mo-enriched 0.2 kg Li$_2$MoO$_4$ crystals. The detectors are complemented by 20 thin cryogenic Ge bolometers acting as light detectors to distinguish $\alpha$ from $\gamma$/$\beta$ events by the detection of both heat and scintillation light signals. We observe good detector uniformity, facilitating the operation of a large detector array as well as excellent energy resolution of 5.3 keV (6.5 keV) FWHM at 2615 keV, in calibration (physics) data. Based on the observed energy resolutions and light yields a separation of $\alpha$ particles at much better than 99.9\% with equally high acceptance for $\gamma$/$\beta$ events is expected for events in the region of interest for $^{100}$Mo $0\nu\beta\beta$. We present limits on the crystals' radiopurity ($\leq$3 $\mu$Bq/kg of $^{226}$Ra and $\leq$2 $\mu$Bq/kg of $^{232}$Th). Based on these initial results we also discuss a sensitivity study for the science reach of the CUPID-Mo experiment, in particular, the ability to set the most stringent half-life limit on the $^{100}$Mo $0\nu\beta\beta$ decay after half a year of livetime. The achieved results show that CUPID-Mo is a successful demonstrator of the technology - developed in the framework of the LUMINEU project - selected for the CUPID experiment, a proposed follow-up of CUORE, the currently running first tonne-scale cryogenic $0\nu\beta\beta$ experiment.<br />Comment: 15 pages, 18 figures, 3 tables; to be submitted to EPJC
- Subjects :
- double-beta decay: neutrinoless
Physics - Instrumentation and Detectors
Physics and Astronomy (miscellaneous)
energy resolution
Radiopurity
nucl-ex
01 natural sciences
7. Clean energy
Atomic
law.invention
High Energy Physics - Experiment
Particle identification
High Energy Physics - Experiment (hep-ex)
CUORE
Particle and Plasma Physics
High performance
neutrinoless double beta decay
Majorana neutrino
cryogenic calorimeters
law
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Scintillating bolometer
Nuclear Experiment (nucl-ex)
physics.ins-det
Nuclear Experiment
Low background
Physics
Quantum Physics
Detector
Instrumentation and Detectors (physics.ins-det)
Nuclear & Particles Physics
molybdenum: oxygen
Full width at half maximum
cryogenics
lithium
100 Mo
ddc:620
photon: yield
performance
Double-beta decay
FOS: Physical sciences
Cryogenic detector
lcsh:Astrophysics
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
crystal
Nuclear physics
bolometer
double-beta decay: (0neutrino)
Double beta decay
lcsh:QB460-466
0103 physical sciences
germanium: detector
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
Nuclear
Sensitivity (control systems)
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
Engineering (miscellaneous)
Engineering & allied operations
scintillation counter
detector: design
Lithium molybdate
Scintillation
molybdenum: nuclide
010308 nuclear & particles physics
hep-ex
Bolometer
Molecular
bibliography
Enriched materials
sensitivity
calibration
Scintillator
Automatic Keywords
lcsh:QC770-798
Energy (signal processing)
acceptance
Subjects
Details
- Language :
- English
- ISSN :
- 14346044 and 14346052
- Database :
- OpenAIRE
- Journal :
- Eur.Phys.J.C, Eur.Phys.J.C, 2020, 80 (1), pp.44. ⟨10.1140/epjc/s10052-019-7578-6⟩, European Physical Journal C, vol 80, iss 1, European Physical Journal C: Particles and Fields, European Physical Journal C: Particles and Fields, 2020, 80 (1), pp.44. ⟨10.1140/epjc/s10052-019-7578-6⟩, The European physical journal / C, 80 (1), Article: 44, European Physical Journal, European Physical Journal C: Particles and Fields, Vol 80, Iss 1, Pp 1-15 (2020)
- Accession number :
- edsair.doi.dedup.....56c896fe5ad5026d3636cb1e61543082