18-22 February 2019
Vienna University of Technology
Europe/Vienna timezone

CUPID-0: a double-readout cryogenic detector for Double Beta Decay search

19 Feb 2019, 14:00
20m
EI8 ()

EI8

Talk Dark matter and other low-background experiments Dark matter and other low-background experiments

Speaker

Prof. Chiara Brofferio (University of Milano - Bicocca and INFN)

Description

CUPID-0 is the first large mass neutrinoless double beta decay (0νDBD) experiment based on cryogenic calorimeters with dual read-out of light and heat for background rejection. The detector, consisting of 26 ZnSe crystals, 2 natural and 24 enriched at 95% in Se82, coupled with bolometric light detectors, has been constructed respecting very strict protocols and procedures, from the material selection during crystal growth to the new and innovative detector structure for the assembly in a bid to achieve the best performance of the array. The successful construction of the detector lead to promising preliminary detector results, that will be presented. The array is in fact taking data underground at LNGS (Italy) since March 2017 and the particle identification, enabled by the heat and light simultaneous read-out, provides an unprecedented background level, for cryogenic calorimeters, of only 3.2×10-3 counts/keV/kg/y in the region of interest (ROI) of the 0νDBD search for Se82, namely around 3 MeV.

Primary authors

Prof. Chiara Brofferio (University of Milano - Bicocca and INFN) Oscar Azzolini (INFN - National Institute for Nuclear Physics) Fabio Bellini (University of Rome) Matteo Biassoni (INFN Milano-Bicocca (IT)) Lucia Canonica Dr Silvia Capelli (Universita` e INFN di Milano Bicocca) Laura Cardani (INFN - National Institute for Nuclear Physics) Paolo Carniti (Universita & INFN, Milano-Bicocca (IT)) Dr Nicola Casali (INFN) Lorenzo Cassina (Universita & INFN, Milano-Bicocca (IT)) Massimiliano Clemenza (Università di Milano Bicocca) Oliviero Cremonesi (INFN) Angelo Cruciani (INFN - National Institute for Nuclear Physics) Antonio D'Addabbo (Istituto Nazionale di Fisica Nucleare) Ioan Dafinei (Universita e INFN, Roma I (IT)) Sergio Di Domizio (INFN and Universita' di Genova) Fernando Ferroni (Dipartim.di Fisica G.Marconi RomeI) Dr Luca Gironi (Universita` e INFN di Milano Bicocca) Paolo Gorla (INFN - National Institute for Nuclear Physics) Claudio Gotti (Universita & INFN, Milano-Bicocca (IT)) Giorgio Keppel (INFN - National Institute for Nuclear Physics) Maria Martinez (Universidad de Zaragoza) Silvio Morganti (Dipartim.di Fisica G.Marconi RomeI) Serge Nagorny (Queen's University) Dr Lorenzo Pagnanini (Università Milano Bicocca and INFN Milano Bicocca) Prof. Marco Pallavicini (Universita' di Genova & INFN Genova) Luca Maria Pattavina (INFN - National Institute for Nuclear Physics) Maura Pavan (Università di Milano-Bicocca and INFN Milano-Bicocca) Gianluigi Pessina (Universita & INFN, Milano-Bicocca (IT)) Valerio Pettinacci (Sapienza Universita e INFN, Roma I (IT)) Stefano Pirro (INFN - Laboratori Nazionali del Gran Sasso, Italy) Stefano Pozzi (INFN - National Institute for Nuclear Physics) Dr Ezio Previtali (Universita` e INFN di Milano Bicocca) andrei puiu (INFN) Claudia Rusconi Karoline Schaeffner (GSSI - Gran Sasso Science Institute) Dr Claudia Tomei (INFN - Roma) Marco Vignati (INFN - National Institute for Nuclear Physics) M.T. Barrera (INFN, Laboratori Nazionali di Legnaro) J.W. Beeman (Materials Science Division, Lawrence Berkeley National Laboratory) Mattia Beretta (Università di Milano-Bicocca and INFN) E. Bossio (Sapienza Università di Roma and INFN) Carlo Bucci (INFN, Laboratori Nazionali del Gran Sasso) A. Giuliani (CSNSM, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay) Massimiliano Nastasi (Università di Milano-Bicocca and INFN) S. Nisi (INFN, Laboratori Nazionali del Gran Sasso) C. Nones (IRFU, CEA, Université Paris-Saclay) D. Orlandi (INFN, Laboratori Nazionali del Gran Sasso) A. Zolotarova (IRFU, CEA, Université Paris-Saclay)

Presentation Materials