The cryostat of the CUORE Project, a 1-ton scale cryogenic experiment for neutrinoless double beta decay research

Year: 2009

Authors: Schaeffer D., Nucciotti A., Alessandri F., Ardito R., Barucci M., Risegari L., Ventura G., Bucci C., Frossati G., Olcese M., De Waard A.

Autors Affiliation: Dip. di Fisica G. Occhialini, Univ and INFN Sez di Milano-Bicocca, Milano, Italy; INFN Sez di Milano, Milano, Italy; Dip. di Ingegneria Strutturale, Politecnico di Milano, Milano, Italy; Dip. di Fisica, Univ di Firenze, INFN Sez di Firenze, Firenze, Italy; INFN, Laboratori Nazionali Del Gran Sasso, Assergi (AQ), Italy; Leiden Cryogenics, Leiden, Netherlands; INFN Sez di Genova, Genova, Italy; Kamerlingh Onnes Laboratory, Leiden University, Leiden, Netherlands

Abstract: CUORE is a new generation of 1-ton scale cryogenic detector for rare-events physics. CUORE, a detector to search Neutrinoless Double Beta Decay of 130Te, is an array of 988 TeO2 crystals of a mass of 750 g each. To build the cryogenic system, where the CUORE detector will be installed in the Gran Sasso Underground Laboratory, is really a challenge. It is a large cryogen-free cryostat cooled by pulse tubes and by a high power dilution refrigerator. To avoid radioactive background, about 10000 kg of lead will be cooled to below 1 K and only few construction materials are acceptable. the detector will have a total mass of about 1500 kg and must be cooled to less than 10 mK in a vibration-free environment.

Conference title:

KeyWords: Decay; Neutrinos; Double β; Cryogenic technologies
DOI: 10.1088/1742-6596/150/1/012042