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The 400W/1.8K Station

Published on 26 October 2022
The 400W/1.8K Refrigerator is in operation since 2004, when it achieved its nominal performances, namely 400W at 1.8K. The refrigeration power available ranks from 120W at 1.5K to 800W at 4.5K. All the temperature levels in between have been fully explored, and temperature can be adjusted in the range of 1.5 to 4.5 K continuously. Noisy screw compressors are located in a separate building, while the cold box stays in the main hall at the vicinity of the 26 m2 control room. Compared to the refrigerators available at CERN for turbulence studies, it offers the possibility to operate below the superfluid transition, down to 1.6K.