Development of an 8-T Conduction-Cooled Superconducting Magnet With 300-mm Warm Bore for Material Processing Application

A wide-bore conduction-cooled superconducting magnet was designed, fabricated, and tested for material processing applications. The superconducting magnet has a large clear warm bore of Ø300 mm, the maximum center field of 8 T, the homogeneity of 97% in homogeneous regions of Ø300 mm × 50 mm. The ma...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2014-04, Vol.24 (2), p.72-76
Main Authors: Chen, Shunzhong, Dai, Yinming, Zhao, Baozhi, Li, Yi, Wang, Housheng, Chang, Kun
Format: Article
Language:English
Subjects:
Applied sciences
Coils
Conduction cooling
Design. Technologies. Operation analysis. Testing
Electrical engineering. Electrical power engineering
Electromagnets
Electronics
Exact sciences and technology
Heating
Integrated circuits
Magnetic fields
Magnetic noise
Magnetic shielding
Magnetism
Magnetomechanical effects
material processing
Materials
quench protection
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
superconducting magnet
Superconducting magnets
Superconductivity
Various equipment and components
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Summary:A wide-bore conduction-cooled superconducting magnet was designed, fabricated, and tested for material processing applications. The superconducting magnet has a large clear warm bore of Ø300 mm, the maximum center field of 8 T, the homogeneity of 97% in homogeneous regions of Ø300 mm × 50 mm. The magnet is composed of three coaxial coils made with NbTi low-temperature superconducting wires. All the coils were connected in series and will be operated with a current of 82.2 A with a high level of stored energy, i.e., about 2.13 MJ. A passive protection based on a subdivided scheme is adopted to protect the magnet from damage caused by a quench. Two two-stage GM cryocoolers with the second-stage cooling power of 1.5 W is used to cool the superconducting magnet from room temperature to 4.2 K. In this paper, magnetic design, stress and strain analysis, quench protection, fabrication, and test are presented.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2014.2298111