Open AccessThe helium cryogenic plant for the CMS superconducting magnet
Author(s) -
G. Perinić
Publication year - 2002
Publication title -
aip conference proceedings
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.177
H-Index - 75
eISSN - 1551-7616
pISSN - 0094-243X
DOI - 10.1063/1.1472026
Subject(s) - refrigeration , nuclear engineering , superconducting magnet , magnet , refrigerator car , cryogenics , electromagnetic coil , large hadron collider , solenoid , cooling capacity , nuclear physics , physics , materials science , environmental science , mechanical engineering , electrical engineering , engineering , thermodynamics
A new helium refrigeration plant with a cooling capacity of 800 W at 4.45 K, 4500 W between 60 K and 80 K, and 4 g/s liquefaction simultaneously has been designed and is presently being constructed by Air Liquide for CERN. The refrigeration plant will provide the cooling power for the cool down and the operation of the CMS (Compact Muon Solenoid) superconducting coil whose cold mass weighs 225 t. The refrigeration plant will at first be installed in a surface building for the tests of the superconducting magnet. On completion of the tests the cold box will be moved to its final underground position next to the CMS experimental cavern. This paper presents the process design, describes the main components and explains their selection.
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