抄録
An optimal design approach is presented for high homogeneity superconducting magnet with superconducting passive shield especially for use in magnetic resonance imaging system. Fundamental solutions for magnetic field are obtained in a form of polynominal harmonics expansion taking the induced current in the superconducting passive shield into account. Influences of superconducting passive shield on the magnetic field in the internal and external region are studied to investigate an optimal design approach for superconducting magnet passively shielded by superconducting sheets or superconducting windings. A method is presented to obtain optimal coil configuration considering constraints for magnetic field homogeneity and leakage field. Some examples of coil configurations are obtained by the proposed method.
