{"title":"Optimized design and performance test of 16 kA HTS current leads used for fusion HTS magnets","authors":"Zi Li, Xuyang Kang, Chenyang Xia, Zhiyong Yan, Suxin Wang, Liujiang Li, Yutong Tian, Jiahui Zhu, Qi Zhou, Chenyu Zhang, Ruihuang Liu, Yunfei Tan","doi":"10.1140/epjb/s10051-025-00994-3","DOIUrl":null,"url":null,"abstract":"<div><p>Heat leakage from current leads is a primary factor influencing the heat load of large superconducting magnet systems. High Temperature Superconducting current leads (HTSCL), in comparison to traditional copper current leads, can significantly reduce both Joule heat and conductive heat leakage in superconducting magnet systems, thereby reducing operational costs. This paper provides a comprehensive optimization of a pair of 16 kA HTSCL intended for the performance test of HTS fusion magnets. Several optimization models were constructed to determine the optimal parameters. The heat load and maximum current-carrying capacity of 16 kA HTSCL are calculated and optimized, and the performance in steady state and loss of flow accident (LOFA) transient process are also analyzed. After about a year of manufacturing, this 16 kA HTSCL were tested in November 2024. The performance test scheme and test results are introduced in detail, mainly including steady state test, LOFA test, joint resistance test, etc. The experimental results are in good agreement with the simulation results, with all indicators meeting the design requirements for fusion HTS magnets.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal B","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epjb/s10051-025-00994-3","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
Heat leakage from current leads is a primary factor influencing the heat load of large superconducting magnet systems. High Temperature Superconducting current leads (HTSCL), in comparison to traditional copper current leads, can significantly reduce both Joule heat and conductive heat leakage in superconducting magnet systems, thereby reducing operational costs. This paper provides a comprehensive optimization of a pair of 16 kA HTSCL intended for the performance test of HTS fusion magnets. Several optimization models were constructed to determine the optimal parameters. The heat load and maximum current-carrying capacity of 16 kA HTSCL are calculated and optimized, and the performance in steady state and loss of flow accident (LOFA) transient process are also analyzed. After about a year of manufacturing, this 16 kA HTSCL were tested in November 2024. The performance test scheme and test results are introduced in detail, mainly including steady state test, LOFA test, joint resistance test, etc. The experimental results are in good agreement with the simulation results, with all indicators meeting the design requirements for fusion HTS magnets.
电流引线漏热是影响大型超导磁体系统热负荷的主要因素。高温超导电流引线（HTSCL）与传统的铜电流引线相比，可以显著降低超导磁体系统中的焦耳热和导热热泄漏，从而降低运行成本。本文对一对用于高温超导聚变磁体性能测试的16 kA HTSCL进行了综合优化。建立了多个优化模型以确定最优参数。对16 kA HTSCL的热负荷和最大载流能力进行了计算和优化，并对稳态和失流（LOFA）瞬态过程的性能进行了分析。经过大约一年的制造，这枚16ka HTSCL在2024年11月进行了测试。详细介绍了性能测试方案和测试结果，主要包括稳态测试、LOFA测试、联合阻力测试等。实验结果与仿真结果吻合较好，各项指标均满足熔合高温超导磁体的设计要求。图形抽象
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