Design of a Superconducting 32 T Magnet With REBCO High Field Coils

The design and fabrication of a 32 T, 32 mm cold bore superconducting magnet with high field REBCO inner coils is underway at the NHMFL. In support of the design, conductor characterization measurements have been made including critical current as a function of field, field orientation, temperature,...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2012-06, Vol.22 (3), p.4300704-4300704
Main Authors: Markiewicz, W. D., Larbalestier, D. C., Weijers, H. W., Voran, A. J., Pickard, K. W., Sheppard, W. R., Jaroszynski, J., Aixia Xu, Walsh, R. P., Jun Lu, Gavrilin, A. V., Noyes, P. D.
Format: Article
Language:English
Subjects:
Applied sciences
Coils
Conductors
Conductors (devices)
Critical current
Design engineering
Drying
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
Heaters
High field superconducting magnets
Insulation
Joints
Magnetomechanical effects
Miscellaneous
quench protection
REBCO
Sol gel process
Steel industry
Superconducting magnets
Superconductivity
Various equipment and components
Windings
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Summary:The design and fabrication of a 32 T, 32 mm cold bore superconducting magnet with high field REBCO inner coils is underway at the NHMFL. In support of the design, conductor characterization measurements have been made including critical current as a function of field, field orientation, temperature, and strain on conductors and joints. Various conductor and turn insulation systems were examined. The selected coil fabrication method for the 32 T magnet is pancake wind, dry wind coils with sol-gel insulation on a stainless steel co-wind. Quench protection of the REBCO coils by distributed heaters is under development. Small REBCO coils have been made and tested in a 20 T background field to demonstrate performance of the technology. The design of the 32 T magnet is described, including coil configuration and conductor lengths, fraction of critical current, selection of conductor copper content for protection, and stress in the windings.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2011.2174952