Superconducting Magnet System Containing Bi-2212/Ag Coil Generates 21.8 T at 1.8K

摘要

We fabricated a Bi-2212/Ag double stacked pancake coil of 13 mmφ in inner bore and of 46.5 mmφ in outer diameter, by using Bi-2212/Ag tapes prepared by the combination of continuous dip-coating process and melt-solidification technique. This small superconducting magnet was used as an insert magnet of a conventional superconducting magnet system and tested at saturated super-fluid helium temperature (～1.8K) in various bias fields. The generated field of Bi-2212/Ag coil was 0.9 T, with I_c of 310 A(criterion 10~(-13) Ω·m), in the bias field of 20.9 T. Thus, this superconducting magnet system achieved generation of magnetic field of 21.8 T in the full superconducting state.