2016•Journal of Physics Conference SeriesOpen access
The CUORE cryostat: commissioning and performance
V. Singh, Christopher Alduino, F. Alessandria, A. Bersani, M. Biassoni, C. Bucci, A. Caminata, Lucia Canonica, Luigi Cappelli, R. Cereseto, N. Chott, Simone Copello, O. Cremonesi, Jeremy S. Cushman, Antonio D’Addabbo, C J Davis, Stefano Dell'Oro, Alexey Drobizhev, A. Franceschi, Laura Gladstone, P. Gorla, M. Guetti, Carlo Ligi, Tommaso Napolitano, Angelo Nucciotti, D. Orlandi, J. L. Ouellet, C. Pagliarone, L. Pattavina, Claudia Rusconi, D. Santone, L. Taffarello, Francesco Terranova, J. G. Wallig, Tom Wise, S. Uttaro
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Abstract
The Cryogenic Underground Observatory for Rare Events (CUORE) will search for the 0 vββ decay in 130 Te using a cryogenic array of TeO 2 bolometers, 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.
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