Fabrication and Assembly of the NHMFL 25 T Resistive Split Magnet

The NHMFL has developed a high-field split resistive magnet for use in far-infrared photon scattering experiments. The magnet includes four large scattering ports of elliptical shape at the mid-plane amounting to a total solid angle of 0.5 steradians of available user space. Such a magnet configurat...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2012-06, Vol.22 (3), p.4301604-4301604
Main Authors: Toth, J., Bird, M. D., Bole, S., O'Reilly, J. W.
Format: Article
Language:English
Subjects:
Applied sciences
Assembly
Coils
Coils (windings)
Cooling
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
High field solenoids
magnet design
Magnetomechanical effects
Photons
resistive magnets
Scattering
Seals
split magnets
State of the art
Superconducting magnets
Superconductivity
Technology utilization
Various equipment and components
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Description
Summary:The NHMFL has developed a high-field split resistive magnet for use in far-infrared photon scattering experiments. The magnet includes four large scattering ports of elliptical shape at the mid-plane amounting to a total solid angle of 0.5 steradians of available user space. Such a magnet configuration results in unique design challenges being especially severe for the windings in the mid-plane region of the innermost coils. Consequently, the NHMFL developed, tested and employed a new technology called Split Florida-Helix. Next, the coil design of the split user magnet, to be operated at our own facility, has been completed in 2009. This user magnet consist of 5 resistive coils consuming a total of less than 28 MW of dc power and providing a flux-density of 25 T available to the user space. To meet the unique design challenges, Split Florida-Helix technology is used around the mid-plane of the two inner most coils and state-of-the-art Florida-Bitter technology is used for all the regular winding in all 5 coils.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2011.2174594