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Instruments and Experimental Techniques

, Volume 61, Issue 5, pp 751–752 | Cite as

A Controlled Magnetic Clamp

  • V. S. Edelman
Laboratory Techniques
  • 10 Downloads

Abstract

A clamp for establishing a thermal contact between cryostat components in a vacuum is described. The contact is established by pressing heat conductors to each other using a permanent magnet and is broken or established by applying a current pulse of the required polarity to the winding around an iron magnetic core. The device is held in the open state by a second permanent magnet. Through the pressed contacts, a copper block with a mass of ∼600 g is cooled in the vacuum from the liquid-nitrogen temperature to the liquid- helium temperature within 4–5 h.

References

  1. 1.
    Edelman, V.S., Instrum. Exp. Tech., 2009, vol. 52, no. 2, p. 301. doi  https://doi.org/10.1134/S002044120902033X CrossRefGoogle Scholar
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    Edelman, V.S., Instrum. Exp. Tech., 2012, vol. 55, no. 6, p. 717. doi  https://doi.org/10.1134/S002044121206005X CrossRefGoogle Scholar
  3. 3.
    Lounasmaa, O.V., Experimental Principles and Methods Below 1 K, London, New York: Academic, 1974, chap. 9.4.Google Scholar

Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  1. 1.Kapitsa Institute of Physical ProblemsRussian Academy of SciencesMoscowRussia

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