Superconducting Properties of a Prototype Pancake Coil Using a MgB2 Rutherford-Type Stranded Conductor
Superconducting Properties of a Prototype Pancake Coil Using a MgB2 Rutherford-Type Stranded Conductor
复制标题
使用 MgB2 卢瑟福型绞合导体的原型薄饼线圈的超导特性
DOI：
10.1109/tasc.2018.2797908
复制
发表时间：
2018
影响因子：
1.8
通讯作者：
Y. Makida et al.
中科院分区：
文献类型：
--
作者：
M. Tomita;T. Onji ;A. Ishihara;Y. Kobayashi;Y. Fukumoto;S. Mizuno;T. Yagai;T. Takao;T. Komagome;K. Tsukada;N. Hirano;Y. Makida et al.
本课题组研制了一种超导磁储能用MgB2超导线材线圈.本文采用反应绕线法制备了一种MgB2卢瑟福型绞合导体线圈。在R&W方法中，使用反应线（由哥伦布超导公司（Columbus Superconductors SpA）进行）制造卢瑟福型导体，其中在铜模型周围以450 mm的间距缠绕9根MgB 2线，然后进行卷绕。线圈通过传导冷却进行冷却，并在磁场下评估IV特性。结果，在R&W方法中，线圈的临界电流降低，因为手工制作线圈会导致应变超出假设的范围，这是最小允许的弯曲应变。这一结果表明，ASPCS中提出的SMES线圈在扭转前难以反应，Rutherford型导体应在反应前制造，这意味着线圈加工应基于React后制作绞线和缠绕方法，或缠绕和反应方法。
Our group has developed a coil using MgB 2 wires for SMES. In this paper, a prototype coil using a MgB 2 Rutherford-type stranded conductor was fabricated based on react-and-wind (R&W) method. In the R&W method, a Rutherford-type conductor in which nine MgB 2 wires were wound at pitch of 450 mm around a copper former were manufactured using reacted wires (performed by Columbus Superconductors SpA), and then coiling was performed. The coil was cooled by conduction cooling and the IV properties were evaluated under magnetic field. As a result, in the R&W method, critical current of a coil was degraded, since making a coil by hand would cause the strain beyond the scope of the assumption which was the marginally allowable bending strain. This result suggests the coil for SMES proposed in ASPCS is difficult to react before twisting, and Rutherford-type conductors should be fabricated before reacting, which means that coil processing should be performed based on the React after making stranded conductors and Wind method, or the wind-and-react method.