Magnetic Field Design of Dipole Magnet Wound With Coated Conductor Considering Its Current Transport Characteristics

When designing accelerator magnets using high T c superconductor tapes, their current transport characteristics with anisotropic magnetic field dependence as well as their temperature dependence must be considered. The current transport characteristics of commercially-available GdBa 2 Cu 3 O 7 coate...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2011-06, Vol.21 (3), p.1833-1837
Main Authors: Takahashi, K, Amemiya, N, Nakamura, T, Ogitsu, T, Kurusu, T, Yoshiyuki, T, Noda, K, Awaji, S
Format: Article
Language:English
Subjects:
Accelerator magnet
Applied sciences
carbon therapy
coated conductor
Conductors
Critical current
Electric connection. Cables. Wiring
Electrical engineering. Electrical power engineering
Electromagnets
Electronics
Exact sciences and technology
high T_{\rm c} superconductor
High temperature superconductors
Magnetic resonance imaging
Microelectronic fabrication (materials and surfaces technology)
Perpendicular magnetic anisotropy
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting magnets
Temperature
Various equipment and components
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Summary:When designing accelerator magnets using high T c superconductor tapes, their current transport characteristics with anisotropic magnetic field dependence as well as their temperature dependence must be considered. The current transport characteristics of commercially-available GdBa 2 Cu 3 O 7 coated conductor made by IBAD and PLD process were measured in various magnetic fields and temperatures, and they were formulated with the percolation depinning model. Using the formulated current transport characteristics, dipole magnets wound with coated conductors were designed to show the feasibility of accelerator magnets operated at a high temperature, where cryo-coolers can be applied. First, a two-dimensional magnet cross-section was designed, and, then, a three-dimensional magnet design was made, based on the constant perimeter restriction and considering the bending and torsion tolerances of coated conductors. Their enthalpy margins, temperature margins, and current margins were estimated and they were compared with that of a NbTi magnet.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2010.2088370