CUPID-0: the first array of enriched scintillating bolometers for 0\nu\beta\beta decay investigations

TL;DR

The CUPID-0 experiment is the first large array of enriched scintillating bolometers designed to detect neutrinoless double-beta decay in $^{82}$Se, aiming for unprecedented background suppression and sensitivity.

Contribution

It introduces a novel large-scale array of enriched scintillating cryogenic detectors with innovative design and construction protocols for 0νββ decay research.

Findings

Achieved promising detector performance

Developed advanced background suppression techniques

Demonstrated feasibility of large-scale cryogenic detector arrays

Abstract

The CUPID-0 detector hosted at the Laboratori Nazionali del Gran Sasso, Italy, is the first large array of enriched scintillating cryogenic detectors for the investigation of $^{82}$Se neutrinoless double-beta decay (0$\nu\beta\beta$). CUPID-0 aims at measuring a background index in the region of interest (RoI) for 0$\nu\beta\beta$ at the level of 10$^{-3}$ c/keV/kg/y, the lowest value ever measured using cryogenic detectors. This result can be achieved by a state of the art technology for background suppression and thorough protocols and procedures for detector preparation and construction. In this paper, the different phases of the detector design and construction will be presented, from the material selection (for the absorber production) to the new and innovative detector structure. The successful construction of the detector lead to promising detector performance which are here preliminarily discussed