TY - JOUR
T1 - Numerical Evaluation on Irregular Field Generated by Screening Current in High-Field REBCO Coil for Whole-Body MRI
AU - Nakazono, Kohei
AU - Ueda, Hiroshi
AU - Ishiyama, Atsushi
AU - Noguchi, So
AU - Miyazaki, Hiroshi
AU - Tosaka, Taizo
AU - Kurusu, Tsutomu
AU - Nomura, Shunji
AU - Urayama, Shinichi
AU - Fukuyama, Hidenao
N1 - Publisher Copyright:
© 2002-2011 IEEE.
PY - 2017/6
Y1 - 2017/6
N2 - In recent years, high-field magnets wound with REBCO tape and their applications to magnetic resonance imaging (MRI) have undergone considerable research and development. MRI coil systems require a highly accurate field in the imaging space. However, in REBCO coils, the irregular magnetic field generated by the screening current is induced by the radial component of the magnetic field in the REBCO tape, and may deteriorate the field quality both spatially and temporally. Therefore, a design process with consideration for the effect of the screening-current field is required for the reduction and correction of this field for a high-accuracy-field REBCO coil. In this study, the screening-current distribution in the REBCO tape and the irregular magnetic field were analyzed by using the simulation we developed for a REBCO model coil system for whole-body MRI. We additionally discuss the effect of the screening-current field in the REBCO coil based on the coil shape and arrangement to use it as feedback to the design stage.
AB - In recent years, high-field magnets wound with REBCO tape and their applications to magnetic resonance imaging (MRI) have undergone considerable research and development. MRI coil systems require a highly accurate field in the imaging space. However, in REBCO coils, the irregular magnetic field generated by the screening current is induced by the radial component of the magnetic field in the REBCO tape, and may deteriorate the field quality both spatially and temporally. Therefore, a design process with consideration for the effect of the screening-current field is required for the reduction and correction of this field for a high-accuracy-field REBCO coil. In this study, the screening-current distribution in the REBCO tape and the irregular magnetic field were analyzed by using the simulation we developed for a REBCO model coil system for whole-body MRI. We additionally discuss the effect of the screening-current field in the REBCO coil based on the coil shape and arrangement to use it as feedback to the design stage.
KW - High-temperature superconducting coil
KW - MRI
KW - irregular magnetic field
KW - screening current
KW - three-dimensional electromagnetic field analysis
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U2 - 10.1109/TASC.2016.2645839
DO - 10.1109/TASC.2016.2645839
M3 - Article
AN - SCOPUS:85015210330
VL - 27
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 4
M1 - 7801085
ER -