The Cryogenic Underground Observatory for Rare Events (CUORE) is a 1-ton scale bolometric experiment. The CUORE detector is an array of 988 TeO\(_2\) crystals arranged in a cylindrical, compact, and granular structure of 19 towers. These detectors will need a base temperature lower than 10 mK in order to meet the performance specifications. To cool the CUORE detector, a large cryogen free cryostat with five pulse tubes and one custom designed high power dilution refrigerator has been designed. The three vessels that form the outer shell of the CUORE cryostat were produced in 2012 and are now assembled in the Gran Sasso National Laboratories (LNGS). We report here the detailed description of the 4 K outer cryostat for the CUORE experiment together with the results of the validation tests done at the production site in 2012 and of the first commissioning to 4 K at LNGS in 2013.
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Ferri, E., Alessandria, F., Biassoni, M. et al. Commissioning of the 4 K Outer Cryostat for the CUORE Experiment. J Low Temp Phys 176, 952–958 (2014). https://doi.org/10.1007/s10909-014-1105-9
- Neutrinoless double beta decay
- Thermal detectors