A conceptual design of a superconducting magnet for MAGLEV using a Bi-based high-Tc superconducting tape ((BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 8/-Ag) is studied. In this study, the structure of conductor and coil, AC loss, stability, current lead, persistent current switch, cryostat structure and cooling system are estimated. The characteristics of the design are as follows: (1) the superconducting coil is cooled by a refrigerator at 20 K and is operated by persistent mode; (2) the coil is constructed by 6 pieces of double pancake coils, and each pancake coil is graded by changing conductor size; (3) the temperature rise of the coil is about 2 K due to AC loss; and (4) the superconducting stability is very high.
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机译：使用Bi基高Tc超导带（（BiPb）/ sub 2 / Sr / sub 2 / Ca / sub 2 / Cu / sub 3 / O / sub 8 / -Ag）的MAGLEV超导磁体的概念设计被研究。在这项研究中，估计了导体和线圈的结构，交流损耗，稳定性，电流引线，持续电流开关，低温恒温器结构和冷却系统。该设计的特点如下：（1）超导线圈由20 K的冰箱冷却，并以持续模式运行； （2）该线圈由6片双煎饼线圈构成，每个煎饼线圈通过改变导体尺寸来分级。 （3）由于交流损耗，线圈的温度上升约2K； （4）超导稳定性很高。
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