Characterization of cubic Li 2100 MoO 4 crystals for the CUPID experiment

The CUPID Collaboration

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The CUPID Collaboration is designing a tonne-scale, background-free detector to search for double beta decay with sufficient sensitivity to fully explore the parameter space corresponding to the inverted neutrino mass hierarchy scenario. One of the CUPID demonstrators, CUPID-Mo, has proved the potential of enriched Li2100MoO4 crystals as suitable detectors for neutrinoless double beta decay search. In this work, we characterised cubic crystals that, compared to the cylindrical crystals used by CUPID-Mo, are more appealing for the construction of tightly packed arrays. We measured an average energy resolution of (6.7 ± 0.6) keV FWHM in the region of interest, approaching the CUPID target of 5 keV FWHM. We assessed the identification of α particles with and without a reflecting foil that enhances the scintillation light collection efficiency, proving that the baseline design of CUPID already ensures a complete suppression of this α-induced background contribution. We also used the collected data to validate a Monte Carlo simulation modelling the light collection efficiency, which will enable further optimisations of the detector.

Original languageEnglish (US)
Article number104
JournalEuropean Physical Journal C
Issue number2
StatePublished - Feb 2021

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Characterization of cubic Li 2100 MoO 4 crystals for the CUPID experiment'. Together they form a unique fingerprint.

Cite this