A conduction cooled Nb3Sn racetrack coil: Design, construction, and testing

David Loder, Reed Sanchez, Matthew Feddersen, Kiruba Haran, Mike Sumption, Mike Tomsic, Jinji Yue, David Doll

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper describes a detailed design of a 6 Tesla Nb3Sn superconducting racetrack coil designed for conduction cooling. We then describe a bench test pursued as a proof of concept for one winding of an actively-shielded, air core electric machine with superconducting field windings. Design selection from a previously computed pareto-optimal front as well as electromagnetic performance of the test coil is discussed. The winding and support structure design is discussed. Analysis of the thermal performance is carried out to verify required temperatures given the cryostat and cryocooler setup. Finally, a strain analysis is performed in order to verify that the superconducting windings are within an acceptable strain level to avoid mechanical breakage as well as excessive degradation of the critical surface. Additionally, the structural integrity of the support components is verified. Test procedures and preliminary results are described.

Original languageEnglish (US)
Title of host publication2016 IEEE Power and Energy Conference at Illinois, PECI 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509002610
StatePublished - Apr 25 2016
EventIEEE Power and Energy Conference at Illinois, PECI 2016 - Urbana, United States
Duration: Feb 19 2016Feb 20 2016

Publication series

Name2016 IEEE Power and Energy Conference at Illinois, PECI 2016


OtherIEEE Power and Energy Conference at Illinois, PECI 2016
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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