CALDER - Neutrinoless double-beta decay identification in TeO2 bolometers with kinetic inductance detectors

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Vignati, M.^1 ; Bellini, F.^1,2 ; Cardani, L.^1,3 ; Casali, N.^1,2 ; Castellano, M.G.^4 ; Colantoni, I.^2 ; Coppolecchia, A.^2 ; Cosmelli, C.^1,2 ; Cruciani, A.^1,2 ; D'Addabbo, A.^5 ; Di Domizio, S.^6,7 ; Martinez, M.^1,2 ; Tomei, C.^1

INFN - Sezione di Roma, Piazzale Aldo Moro 2, Roma

06585, Italy^1

Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 2, Roma

06585, Italy^2

Physics Department, Princeton University, Washington Road, Princeton

NJ

08544, United States^3

Istituto di Fotonica e Nanotecnologie - CNR, Via Cineto Romano 42, Roma

06556, Italy^4

INFN - Laboratori Nazionali Del Gran Sasso, Via G. Acitelli, 22, Assergi (AQ)

67100, Italy^5

Dipartimento di Fisica, Università degli Studi di Genova, Via Dodecaneso 33, Genova

16146, Italy^6

INFN - Sezione di Genova, Via Dodecaneso 33, Genova

16146, Italy^7

关键词: Alpha radioactivity;    Cherenkov light;    Cryogenic light detectors;    Generation experiments;    Kinetic inductance detectors;    Majorana neutrino mass;    Neutrinoless double-beta decays;    Prototype experiment;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/6/062065/pdf
DOI  :  10.1088/1742-6596/718/6/062065

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Next-generation experiments searching for neutrinoless double-beta decay must be sensitive to a Majorana neutrino mass as low as 10 meV. CUORE, an array of 988 TeO2bolometers being commissioned at Laboratori Nazionali del Gran Sasso in Italy, features an expected sensitivity of 50-130 meV at 90% C.L, that can be improved by removing the background from α radioactivity. This is possible if, in coincidence with the heat release in a bolometer, the Cherenkov light emitted by the β signal is detected. The amount of light detected is so far limited to only 100 eV, requiring low-noise cryogenic light detectors. The CALDER project (Cryogenic wide-Area Light Detectors with Excellent Resolution) aims at developing a small prototype experiment consisting of TeO2bolometers coupled to new light detectors based on kinetic inductance detectors. The present R&D is focused on the light detectors. We present the latest results and the perspectives of the project.