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Development of wide-bore conduction-cooled superconducting magnet system for material processing applications

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5 Author(s)
Qiuliang Wang ; Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China ; Luguang Yan ; Baozhi Zhao ; Sousen Song
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The application of high magnetic field to material processing, so called electromagnetic processing of material (EPM) has been recognized as cutting edge technology, especially in the field of advanced material processing. It is the most effective methods to control thermal, mass and energy transfer during material solidification. A wide-bore conduction-cooled superconducting magnet with operating current of 116 A was designed, fabricated and tested for the material processing devices. The superconducting magnet has the effective warm hole of 18 cm, the maximum center field of 6 T and homogeneity of 5% in diameter of 5 cm. After the Nb3Sn coil insert installed, the magnet can provide the maximum center field of 10 T with effective warm bore of 10 cm. A second-stage GM cryocooler with the second-stage cooling power of 1 W is used to cool the superconducting magnet from room temperature to 4.2 K. In this paper, the design, fabrication, test, stress analysis and quench protection characteristics are presented.

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Applied Superconductivity, IEEE Transactions on  (Volume:14 ,  Issue: 2 )