CRYOGEN FREE SUPERCONDUCTING MAGNET SYSTEMS
Cryogen-free superconducting magnets have become increasingly popular in research and industry
due to their ease and simplicity of operation as compared to traditional liquid helium cooled
magnet systems. These magnets are manufactured in a variety of confi gurations and sizes to
accommodate requirements of most imaginative scientists or engineers. Cryogen free magnet
systems use a closed cycle helium refrigerator to cool the cryogenic assemblies to temperatures
close to 4K. In certain confi gurations the magnet is conductively cooled in a vacuum whereas
some geometries use traditional LHe cooling with a cryocooler to recondense liquid Helium;
thereby resulting in near zero loss system (ReCon TM ). Based on customer’s experimental requirements
either a Gifford-McMahon or a pulse tube cryocooler is used. Some of the most
widely used types of cryogen free magnet systems are listed and discussed below.
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Room Temperature Bore (RTB) Solenoid Systems (Vertical or Horizontal geometry)
? RTB Radial Access Magnet Systems (Magneto-Optic systems)
? RTB MAxes TM Multi-axis Magnet systems
? Variable Field Variable Temperature (VFVT) magnet systems
ReCon ? TM style systems
