Tests of Fill Fibers and Epoxy Resins for the Fabrication of Impregnated Superconducting Solenoids

  • M. A. Green
  • S. K. Mukherjee
  • S. M. Dardin
  • J. W. O’Neill
  • R. E. Marrs
  • E. Magee
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 44)

Abstract

While fabricating a 6 tesla superconducting solenoid for an EBIT experiment1 at the Lawrence Livermore National Laboratory, a pair of test solenoids were wound and potted to test fill fibers and resins systems for impregnating tightly wound superconducting solenoids. Two types of fibers were used as layer to layer insulation and to fill spaces between 0.75 mm diameter formvar insulated wires. Two resin systems with different cure temperatures were tested. Ground plane insulation with and without sheets of mica was also tested. Two closely packed solenoids with an outside diameter of 150 mm were wound on an aluminum mandrel. Once the solenoids were wound and resin impregnated, they were quickly cooled to 77 K using liquid nitrogen. After the cold shock test, the coils were inspected and sectioned. The results of these tests are presented in this report.

Keywords

Layer Insulation Resin System Vacuum Impregnation Superconducting Solenoid Hoop Direction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    M. A. Green, S. M. Dardin, R. E. Marrs, E. Magee, and S. K. Mukhergee, “The Design and Fabrication of a 6 Tesla EBIT Solenoid,” to be published in the proceedings of the EUCAS-97 conference, Eindhoven, Netherlands, 30 June to 3 July 1997, LBNL-40462 (1997)Google Scholar
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    Formulation of the SLAC Mix is given in a Lawrence Livermore National Laboratory specification by M. Kendall, “Coil Fabrication Specification,” p 5, LLNL-BFactory 96–001, April 29, 1996Google Scholar
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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • M. A. Green
    • 1
  • S. K. Mukherjee
    • 1
  • S. M. Dardin
    • 1
  • J. W. O’Neill
    • 1
  • R. E. Marrs
    • 2
  • E. Magee
    • 2
  1. 1.E. O. Lawrence Berkeley National LaboratoryUniversity of CaliforniaBerkeleyUSA
  2. 2.Lawrence Livermore National LaboratoryUniversity of CaliforniaLivermoreUSA

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