Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 92: Neutrinophysik IV
T 92.5: Vortrag
Donnerstag, 22. März 2018, 17:35–17:50, Z6 - SR 2.012
Light Detectors Development and Characterization for Cupid 0νββ Decay Experiment — •Maria Teresa Barrera Rojas for the CUPID-0 collaboration — INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
The CUORE Upgrade project CUPID (Cryogenic Underground Observatory for Rare Events Upgrade with Particle IDentification) scientific goal is to explore the inverted hierarchy of neutrino masses and search for the violation of the lepton number due to 0νββ decay. One of its R&D lines of the CUPID project combines semiconducting light detectors and Zn82Se bolometric-scintillator crystals to simultaneously detect the light emitted by an event in the bolometer itself, allowing the discrimination of α particles from γ/e.
Identification of the natural induced radioactivity (mostly α) allows to reach the zero-background operation conditions. One of the main challenges is the small amount of light transmitted to the detector, but it can be enhanced by incorporating anti-reflective coatings. This talk will discuss the status of the experiment, the optimization of the light transmittance and optical characterization of the detectors.