Design and Performance Analysis of Gradient Coil for High-Field HTS REBCO MRI Magnet

In this study, we designed gradient coils for a 6 T high-temperature superconducting (HTS) MRI magnet and analyzed their effects on the main magnet which was fabricated using rare-earth barium copper oxide (REBCO) conductor. First, we designed a total of 6 coils, which composed the X, Y, and Z gradi...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2024-08, Vol.34 (5), p.1-5
Main Authors: Park, Hyunsoo, Kim, Geonyoung, Choi, Kibum, Park, Jeonghwan, Kim, Jaemin, Choi, Seyong, Sim, Kideok, Hahn, Seungyong
Format: Article
Language:English
Subjects:
Barium
Coils
Conductors
Copper oxides
Electromagnetic properties
Field homogeneity
gradient coil design
High temperature
high-temperature superconducting (HTS)
High-temperature superconductors
Magnetic fields
Magnetic noise
Magnetic resonance imaging
magnetic resonance imaging (MRI)
Magnetic shielding
matrix calculation
Rare earth elements
screening current
Superconducting magnets
Wires
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Summary:In this study, we designed gradient coils for a 6 T high-temperature superconducting (HTS) MRI magnet and analyzed their effects on the main magnet which was fabricated using rare-earth barium copper oxide (REBCO) conductor. First, we designed a total of 6 coils, which composed the X, Y, and Z gradient and shield coils. To ensure the performance of gradient system, we designed the gradient coil that satisfies the essential requirements such as linearity and uniformity. Second, we analyzed the effects of the gradient coil operations on the main magnet. Although the gradient shield coils prevented the main HTS magnet from experiencing magnetic field changes, the unshielded magnetic field leakage could generate screening currents in the REBCO conductor which could affect the performance of the main magnet. We simulated and analyzed the electromagnetic behaviors of the HTS REBCO magnet affected by the high-frequency varying field caused by the gradient coil operation.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2024.3365084