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The CUORE cryostat: an infrastructure for rare event searches at millikelvin temperatures

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arxiv 1904.05745 v2 pith:TAJ5F5L2 submitted 2019-04-09 physics.ins-det nucl-ex

The CUORE cryostat: an infrastructure for rare event searches at millikelvin temperatures

C. Alduino , F. Alessandria , M. Balata , D. Biare , M. Biassoni , C. Bucci , A. Caminata , L. Canonica
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L. Cappelli G. Ceruti A. Chiarini N. Chott M. Clemenza S. Copello A. Corsi O. Cremonesi A. D'Addabbo S. Dell'Oro L. Di Paolo M. L. Di Vacri A. Drobizhev M. Faverzani E. Ferri M. A. Franceschi R. Gaigher L. Gladstone P. Gorla M. Guetti L. Ioannucci Yu. G. Kolomensky C. Ligi L. Marini T. Napolitano S. Nisi A. Nucciotti I. Nutini T. O'Donnell D. Orlandi J. L. Ouellet C. E. Pagliarone L. Pattavina A. Pelosi M. Perego E. Previtali B. Romualdi A. Rotilio C. Rusconi D. Santone V. Singh M. Sisti L. Taffarello E. Tatananni F. Terranova S. L. Wagaarachchi J. Wallig C. Zarra
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classification physics.ins-det nucl-ex
keywords cuorecryostatexperimentdetectorachieveachievedallowsapparatus
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The CUORE experiment is the world's largest bolometric experiment. The detector consists of an array of 988 TeO2 crystals, for a total mass of 742 kg. CUORE is presently taking data at the Laboratori Nazionali del Gran Sasso, Italy, searching for the neutrinoless double beta decay of 130Te. A large custom cryogen-free cryostat allows reaching and maintaining a base temperature of about 10 mK, required for the optimal operation of the detector. This apparatus has been designed in order to achieve a low noise environment, with minimal contribution to the radioactive background for the experiment. In this paper, we present an overview of the CUORE cryostat, together with a description of all its sub-systems, focusing on the solutions identified to satisfy the stringent requirements. We briefly illustrate the various phases of the cryostat commissioning and highlight the relevant steps and milestones achieved each time. Finally, we describe the successful cooldown of CUORE.

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  1. CUPID pre-CDR

    physics.ins-det 2019-07 unverdicted novelty 4.0

    CUPID proposes a large bolometric detector array with alpha/beta discrimination to achieve a background-free search for 0νββ decay in 100Mo and probe the inverted neutrino mass hierarchy.