The Use of Small Coolers in a Magnetic Field

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Small 4 K coolers are used to cool superconducting magnets.These coolers are usually used with high temperature suerconductor (HTS)leads. In most cases, magnet is shielded with iron or active shieldcoils. Thus the field at the cooler is low. There are instances when thecooler must be in a magnetic field. Gifford McMahon (GM) coolers or pulsetube coolers are commercially available to cool the magnets. This paperwill discuss how the two types of coolers are affected by the straymagnetic field. Strategies for using coolers on magnets that generatestray magnetic fields are discussed.

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Green, Michael A. & Witte, Holger July 25, 2007.

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Small 4 K coolers are used to cool superconducting magnets.These coolers are usually used with high temperature suerconductor (HTS)leads. In most cases, magnet is shielded with iron or active shieldcoils. Thus the field at the cooler is low. There are instances when thecooler must be in a magnetic field. Gifford McMahon (GM) coolers or pulsetube coolers are commercially available to cool the magnets. This paperwill discuss how the two types of coolers are affected by the straymagnetic field. Strategies for using coolers on magnets that generatestray magnetic fields are discussed.

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  • Cryogenic Engineering Conferenece, Chatanooga TN,21 - 25 July 2007

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  • Report No.: LBNL--63476
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 932526
  • Archival Resource Key: ark:/67531/metadc899868

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Office of Scientific & Technical Information Technical Reports

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  • July 25, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 31, 2016, 4:06 p.m.

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Green, Michael A. & Witte, Holger. The Use of Small Coolers in a Magnetic Field, article, July 25, 2007; (digital.library.unt.edu/ark:/67531/metadc899868/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.