First cryogenic tests on BINGO innovations
Abstract
Neutrinoless double-beta decay (02β) is a hypothetical rare nuclear transition. Its observation would provide an important insight about the nature of neutrinos (Dirac or Majorana particle) demonstrating that the lepton number is not conserved. BINGO (Bi-Isotope 02β Next Generation Observatory) aims to set the technological grounds for future bolometric 02β experiments. It is based on a dual heat-light readout, i.e. a main scintillating absorber embedding the double-beta decay isotope accompanied by a cryogenic light detector. BINGO will study two of the most promising isotopes: 100Mo embedded in Li2MoO4 (LMO) crystals and 130Te embedded in TeO2. BINGO technology will reduce dramatically the background in the region of interest, thus boosting the discovery sensitivity of 02β. The proposed solutions will have a high impact on next-generation bolometric tonne-scale experiments, like CUPID. In this contribution, we present the results obtained during the first tests performed in the framework of BINGO R&D.
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