Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment to search for neutrinoless double beta decay (0 nu beta beta) in Te-130 and other rare processes. CUORE is a cryogenic detector composed of 988 TeO2 bolometers for a total mass of about 741 kg. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/(keV.kg.y) will be reached, in five years of data taking CUORE will have an half life sensitivity around 1 x 10(26) y at 90% C.L. As a first step towards CUORE a smaller experiment CUORE-0, constructed to test and demonstrate the performances expected for CUORE, has been assembled and is running. The detector is a single tower of 52 CUORE-like bolometers that started taking data in spring 2013. The status and perspectives of CUORE will be discussed, and the first CUORE-0 data will be presented.

Highlights

  • The interest in neutrino physics has increased in the recent years since the discovery of neutrino oscillations

  • CUORE (Cryogenic Underground Observatory for Rare Events) will use the bolometric technique to search for 0νββ in 130Te

  • The tower assembling procedure consists essentially of three steps: 1) the Neutron Transmutation Doped (NTD)-sensor and the Si-heater are glued on the crystal; 2) the crystals are assembled together in a single CUORE tower, and wire trays are mounted on the sides of the tower to bring the signals from the crystals to the mixing chamber of the

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Summary

Introduction

The interest in neutrino physics has increased in the recent years since the discovery of neutrino oscillations. Experiments measuring oscillations in solar, atmospheric, accelerator, and reactor neutrinos have made tremendous progress in pinning down the neutrino mixing angles and oscillation frequencies, which enter as parameters in the Standard Model with the inclusion of the nonvanishing neutrino masses. One practical way to investigate these open issues is to search for neutrinoless double beta decay (0νββ) [1]. The observation of this process would prove that neutrinos are Majorana particles, and could provide other fundamental information about the neutrino mass. After a brief introduction to double beta decay, the bolometric technique will be described and the status of the CUORE and CUORE-0 experiments will be presented

Neutrinoless double beta decay
The CUORE bolometers
The CUORE experiment
The present
Findings
Conclusions
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