Bong Uijong, Choi Kibum, Kim Jaemin, Bang Jeseok, Lee Jung Tae, Im Chaemin, Park Jeonghwan, Yoon Jonghoon, Kim Geonyoung, Ku Hwanmo, Kang Wonkook, Hahn Seungyong
Department of Electrical and Computer Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, South Korea.
Hanmi Techwin Co., Ltd., 45, Gongdan 1-daero 195 beon-gil, Siheung-si, Gyeonggi-do 15083, South Korea.
Rev Sci Instrum. 2022 Jul 1;93(7):073302. doi: 10.1063/5.0086583.
In order to explore the applicability of superconducting magnets in a magnetic field range of 3 T or less, where superconducting magnets have not been much used so far, a prototype magnet development project has been launched in collaboration with Hanmi Techwin Corporation and Seoul National University. As a result of the project, here we report the design, construction, and operation results of a 2 T 240 mm defect-irrelevant winding (DIW) (RE) BaCuO (REBCO) magnet. First, design goals were set considering its potential usage in industrial fields, and a 2 T 240 mm-bore multi-width no-insulation high-temperature superconductor magnet was designed accordingly. Based on the design, a total of 15 double pancake (DP) coils were wound, regardless of defects in REBCO tapes, and assembled together. After being installed in a conduction cooling system, the magnet was tested at a temperature of <20 K, and a magnetic field of 2 T at the magnet center was successfully generated with a total of four DP coils containing multiple defects. Based on the experimental results, the additional considerations required for the DIW approach at the magnet level are discussed.
为了探索超导磁体在3 T及以下磁场范围内的适用性（目前超导磁体在该磁场范围内的使用并不多），与Hanmi Techwin公司和首尔国立大学合作启动了一个原型磁体开发项目。作为该项目的成果，在此我们报告一个2 T 240 mm无缺陷关联绕组（DIW）（稀土）钡铜氧（REBCO）磁体的设计、建造及运行结果。首先，考虑到其在工业领域的潜在用途设定了设计目标，并据此设计了一个2 T 240 mm孔径的多宽度无绝缘高温超导磁体。基于该设计，共绕制了15个双饼（DP）线圈，不考虑REBCO带材中的缺陷，并将它们组装在一起。安装在传导冷却系统中后，该磁体在低于20 K的温度下进行测试，使用总共四个包含多个缺陷的DP线圈成功在磁体中心产生了2 T的磁场。基于实验结果，讨论了在磁体层面DIW方法所需的其他考虑因素。
