(Bi, Pb)(2)Sr2Ca2Cu3O10+x Ag-clad high-T-c superconducting coil and its magnetic field properties

摘要

A high T-c superconducting (HTS) (Bi, Pb)(2)Sr2Ca2Cu3O10+x Ag-clad multifilament wire is used to prepare a HTS coil. This anisotropic HTS wire has a strong magnetic field-dependent critical current, which causes critical-current degradation when used in the form of a coil. The magnetic field behaviour of the HTS coil is studied with respect to its critical current and magnetic field properties. Experiments carried out include magnetic field measurements of the HTS coil, de magnetic field, ac magnetic field and critical-current ampere-turns when used as a magnetic core bias winding. The magnetic field distribution of the HTS coil is also investigated with a magnetic field analysis program. The experimental results and analysis provide basic information for the design and operation of a HTS coil made from anisotropic HTS (Pi, Pb)(2)Sr2Ca2Cu3O10+x Ag-clad wire.