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A Novel Approach for Magnet Leads

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Abstract

An integrated approach to magnet lead design is presented which incorporates innovations and design enhancements over a conventional design. The primary innovation is that a set of baffles is used to transfer heat from the leads to the Helium gas, as opposed to direct thermal contact between the two. Based on this design approach, we have established a calculational method to compute boiloff rates and temperature profiles. We have investigated the feasibility of such a baffle cooled approach by conducting boiloff calculations for various lead geometries. Leads with graded cross sectional areas, which are readily incorporated into such a system, significantly lower the boiloff rate compared with uniform area leads.

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References

  1. V.E. Keilin, E.Y. Klimenko, Investigation into high current leads in liquid helium applications. Cryogenics 6, 222–228 (1966)

    Article  Google Scholar 

  2. K. Efferson, Helium vapor cooled current leads. Rev. Sci. Instrum. 38, 1776–1779 (1967)

    Article  ADS  Google Scholar 

  3. R.C. Richardson, E.N. Smith, Experimental Techniques in Condensed Matter Physics in Low Temperatures (Addison-Wesley, Reading, 1988), pp. 30–33, Chap. 2

    Google Scholar 

  4. Cryomagnetics Inc. 1006 Alvin Weinberg Drive, Oak Ridge, Tennessee 37830, (865)482-9551

  5. A. Roth, Vacuum Technology (North-Holland, Amsterdam, 1990), pp. 69–79, Chap. 3

    Google Scholar 

  6. ANSYS Inc., Southpointe 275 Technology Drive Canonsburg, PA 15317, (724)746-3304

  7. Y. Shiroyanagi, G. Gopalakrishnan, S. An, T.J. Gramila, Implementation of a baffle cooled approach for a cryostat magnet lead system, in AIP Conf. Proc. Ser., vol. 850 (AIP, New York, 2006)

    Chapter  Google Scholar 

  8. Emerson and Cumming, 46 Manning Road Billerica, MA 01821, (978)436-9700

  9. F. Rondeaux, P. Bredy, J.M. Rey, Thermal conductivity measurements of epoxy systems at low temperature. Adv. Cryog. Eng. 48, 197–203 (2001)

    Google Scholar 

  10. Precision Cryogenics Systems Inc., 11717 W. Rockville Rd., Indianapolis, IN 46234, (317)272-0888

  11. C.Y. Ho, M.W. Ackerman, K.Y. Wu, S.G. Oh, T.N. Hovill, J. Phys. Chem. Ref. Data 7(3), 959–1177 (1978)

    Article  ADS  Google Scholar 

  12. NIST Standard Reference Database 69, June 2005 Release: NIST Chemistry WebBook. http://webbook.nist.gov/cgi/fluid.cgi

  13. Y.S. Touloukian, Thermal Conductivity: Metallic Elements and Alloys (IFI/Plenum, New York, 1970), pp. 1164–1175

    Google Scholar 

  14. G.K. White, Experimental Techniques in Low-Temperature Physics (Oxford University Press, London, 1979), p. 137, Chap. 5

    Google Scholar 

  15. S.Y. Seol, J.R. Hull, M.C. Chyu, IEEE Trans. Appl. Supercond. 5(2), 785–788 (1995)

    Article  Google Scholar 

  16. H.G. Lee, H.M. Kim, B.W. Lee, I.S. Oh, H.R. Kim, O.B. Hyun, J. Sim, H.M. Chang, J. Bascunan, Y. Iwasa, IEEE Trans. Appl. Supercond. 17(2), 2248–2251 (2007)

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Dept. of Physics, Ohio State University, 191W. Woodruff Ave., Columbus, OH, 43210-1117, USA

    Yuko Shiroyanagi, Gokul Gopalakrishnan, Sanghun An & Thomas J. Gramila

Authors
  1. Yuko Shiroyanagi
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  2. Gokul Gopalakrishnan
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  3. Sanghun An
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  4. Thomas J. Gramila
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Correspondence to Yuko Shiroyanagi.

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Shiroyanagi, Y., Gopalakrishnan, G., An, S. et al. A Novel Approach for Magnet Leads. J Low Temp Phys 155, 127–152 (2009). https://doi.org/10.1007/s10909-009-9863-5

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  • DOI: https://doi.org/10.1007/s10909-009-9863-5

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