The CUORE detector and results

25 Jul 2019, 11:15
15m
Auditorium G. Testori (Milano)

Auditorium G. Testori

Milano

Piazza Città di Lombardia, 1, 20124 Milano MI
Oral Presentation Low Temperature Detector Applications Orals LM 004

Speaker

Irene Nutini (GSGC)

Description

The Cryogenic Underground Observatory for Rare Events (CUORE) is a bolometric experiment searching for neutrinoless double beta decay (0νββ) of $^{130}$Te. The detector consists of an array of 988 TeO$_2$ crystals arranged in a compact cylindrical structure of 19 towers. The construction of the experiment was completed in August 2016 with the installation of all towers in the cryostat. Following a cooldown, diagnostic, and optimization campaign, routine data-taking began in spring 2017. In this talk, we present the 0νββ results of CUORE from examining a total TeO$_2$ exposure of 86.3 kg yr, characterised by an average energy resolution of 7.7 keV FWHM and a background in the region of interest of 0.014 counts/(keV kg yr). In this physics run, CUORE placed the current best lower limit on the $^{130}$Te 0νββ half-life of > 1.3 × 10$^{25}$ yr (90% C.L.). We then discuss the additional improvements in the detector performance achieved in 2018,  the latest evaluation of the CUORE background budget, and we finally present the most accurate and precise measurement of the $^{130}$Te 2νββ half-life to date.

Less than 5 years of experience since completion of Ph.D N
Student (Ph.D., M.Sc. or B.Sc.) N

Primary author

Presentation Materials