The CUORE cryostat: commissioning and performance

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Singh, V.^1 ; Alduino, C.^2 ; Alessandria, F.^3 ; Bersani, A.^4 ; Biassoni, M.^5,6 ; Bucci, C.^7 ; Caminata, A.^4 ; Canonica, L.^7 ; Cappelli, L.^4,7,8 ; Cereseto, R.^4 ; Chott, N.^2 ; Copello, S.^4,9 ; Cremonesi, O.^6 ; Cushman, J.S.^10 ; D'Addabbo, A.^7 ; Davis, C.J.^10 ; Dell'Oro, S.^7,11 ; Drobizhev, A.^1,12 ; Franceschi, M.A.^13 ; Gladstone, L.^14 ; Gorla, P.^7 ; Guetti, M.^7 ; Ligi, C.^13 ; Napolitano, T.^13 ; Nucciotti, A.^5,6 ; Orlandi, D.^7 ; Ouellet, J.L.^1,12,14 ; Pagliarone, C.E.^7,8 ; Pattavina, L.^7 ; Rusconi, C.^6 ; Santone, D.^7,15 ; Taffarello, L.^16 ; Terranova, F.^5,6 ; Wallig, J.^17 ; Wise, T.^10,18 ; Uttaro, S.^7,8

Department of Physics, University of California, Berkeley

CA

94720, United States^1

Department of Physics and Astronomy, University of South Carolina, Columbia

SC

29208, United States^2

INFN - Sezione di Milano, Milano

I-20133, Italy^3

INFN - Sezione di Genova, Genova

I-16146, Italy^4

Dipartimento di Fisica, Università di Milano-Bicocca, Milano

I-20126, Italy^5

INFN - Sezione di Milano Bicocca, Milano

I-20126, Italy^6

INFN - Laboratori Nazionali Del Gran Sasso, Assergi, L'Aquila

I-67010, Italy^7

Dipartimento di Ingegneria Civile e Meccanica, Università degli Studi di Cassino e Del Lazio Meridionale, Cassino

I-03043, Italy^8

Dipartimento di Fisica, Università di Genova, Genova

I-16146, Italy

(10) Department of Physics, Yale University, New Haven

CT

06520, United States

(11) INFN - Gran Sasso Science Institute, L'Aquila

I-67100, Italy

(12) Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley

CA

94720, United States

(13) INFN - Laboratori Nazionali di Frascati, Frascati, Roma

I-00044, Italy

(14) Massachusetts Institute of Technology, Cambridge

MA

02139, United States

(15) Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila

1-67100, Italy

(16) INFN - Sezione di Padova, Padova

I-35131, Italy

(17) Engineering Division, Lawrence Berkeley National Laboratory, Berkeley

CA

94720, United States

(18) Department of Physics, University of Wisconsin, Madison

WI

53706, United States^9

关键词: Base temperature;    Cooling performance;    Detector Assembly;    Dilution refrigerator;    Meter scale;    Packed arrays;    Pulse tubes;    Total mass;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/6/062054/pdf
DOI  :  10.1088/1742-6596/718/6/062054

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The Cryogenic Underground Observatory for Rare Events (CUORE) will search for the 0vββ decay in130Te using a cryogenic array of TeO2bolometers, operated at a base temperature of ∼10mK. CUORE will consist of a closely packed array of 19 towers each containing 52 crystals, for a total mass of 741kg. The detector assembly is hosted in one of the largest cryostats ever constructed and will be cooled down to base temperature using a custom-built cryogen free dilution refrigerator. The CUORE cryostat along with the pulse tube based dilution refrigerator has been already commissioned at Laboratori Nazionali del Gran Sasso (LNGS) and a record base temperature, on a cubic meter scale, of ∼6mK was achieved during one of the integration runs. We present the results from integration runs, characterizing the system and the cooling performance of the dilution refrigerator, effectively showcasing its stability at base temperature for the expected thermal load.