Design, Fabrication, and Test of a Superconducting Dipole Magnet Based on Tilted Solenoids

It can be shown that, by superposing two solenoid like thin windings that are oppositely skewed (tilted) with respect to the bore axis, the combined current density on the surface is "cos-theta" like and the resulting magnetic held in the bore is a pure dipole. As a proof of principle, suc...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2007-06, Vol.17 (2), p.2266-2269
Main Authors: Caspi, S., Dietderich, D.R., Ferracin, P., Finney, N.R., Fuery, M.J., Gourlay, S.A., Hafalia, A.R.
Format: Article
Language:English
Subjects:
Accelerators
Applied sciences
Boring
Circuit properties
Current density
Design. Technologies. Operation analysis. Testing
Digital circuits
Dipoles
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electromagnets
Electronic circuits
Electronics
Exact sciences and technology
Fabrication
High temperature superconductors
Insert magnet
Integrated circuits
Integrated circuits by function (including memories and processors)
pure dipole
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Solenoids
Strands
Superconducting coils
Superconducting epitaxial layers
Superconducting filaments and wires
superconducting magnet
Superconducting magnets
Superconductivity
Superconductors
Testing
tilted solenoid
Various equipment and components
Voids
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Description
Summary:It can be shown that, by superposing two solenoid like thin windings that are oppositely skewed (tilted) with respect to the bore axis, the combined current density on the surface is "cos-theta" like and the resulting magnetic held in the bore is a pure dipole. As a proof of principle, such a magnet was designed, built and tested as part of a summer undergraduate intern project. The measured field in the 25 mm bore, 4 single strand layers using NbTi superconductor, exceeded 1 T. The simplicity of this high field quality design, void of typical wedges end-spacers and coil assembly, is especially suitable for insert-coils using High Temperature Superconducting wire as well as for low cost superconducting accelerator magnets for High Energy Physics. Details of the design, construction and test are reported.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2007.899243