2009 年 129 巻 11 号 p. 1326-1332
Each superconducting coil manufacturing process using YBCO tape coated conductor was evaluated, and double pancake type copper stabilized coils were verified, in order to develop base technologies of a YBCO coil for power applications. Cost of YBCO tape including a stabilization process needs to be low in order for it to be a practical use wire for power application coils. Conduction cooling is also needed below the 50K temperature range, which is optimal for high magnetic field coils using YBCO tape. Therefore, we developed technology for each process for manufacturing of a conduction cooling type coil. Techniques for winding, stabilization, electrode formation, and impregnation were developed, considering YBCO tape configuration and a conduction cooling method. Several wire coils were then manufactured and verified using a conduction cooling system, and the high performances of thermal stability, low electrical joint resistance, etc. were achieved without degradation.
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