Weican Huang;Xiaohua Jiang;Guolin Chai;Xianrui Huang;Qingyu Zou;Ye Li
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Design of a 14 T Actively Shielded Superconducting Magnet for Animal MRI
A 14 T actively shielded animal MRI magnet has been designed and is currently under construction. The magnet has a warm bore of 175 mm diameter and consists of Nb
3
Sn and NbTi solenoid coils. This paper presents the results of electromagnetic, structural and quench protection designs of the magnet. The magnetic field homogeneity is 0.9 ppm within a 60 mm diameter of spherical volume. The distance of 5 Gauss line from the magnet center is 2.4 m radially and 2.9 m axially. Stress analysis shows that the maximum axial and circumferential stresses in the coils are −73 MPa and 144 MPa, respectively. Under the worst quench scenarios, the maximum hotspot temperature and inter-layer voltage in the coils are constrained to 169 K and 720 V, respectively.
期刊介绍：
IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.
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