期刊
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
卷 35, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6668/ac370e
关键词
active shielding; superconducting magnet; MRI; NMR; ultrahigh field
资金
- CAS Pioneer Hundred Talents Program [Y8402A1C31]
- National Key Research and Development Program of China [2020YFF01014702, 2019YFC0117604]
- National Major Research Instrument Development Project of NSFC [51827810]
Active shielding technology shows excellent performance in MRI and NMR magnet design, with optimization strategy being essential for ultra-high field superconducting magnet design.
Active shielding technology has been widely applied to the superconducting magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) magnets design, revealing excellent performance on the stray field control. For such a highly homogeneous field superconducting magnet design, an appropriate optimization strategy is essential to guarantee the magnetic field homogeneity in the central region and the expected 5 Gauss line range, especially for the ultrahigh field superconducting magnet. Based on the compensating field optimization method, an actively-shielded whole-body 14 T MRI magnet and an actively-shielded 1.3 GHz NMR magnet were presented, and detailed analyses were conducted to evaluate the feasibility of the designs. The developed magnet design method, coil pattern, wire arrangement, and stress/strain adjustment will be used to guide the corresponding project implementation.
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