Design and test of a compact twisted stacked YBCO cable for fusion application

IF 1.3 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2024-09-07 DOI:10.1016/j.physc.2024.1354582

Yifeng Li, Shaotao Dai, Junfeng Yang, Tao Ma

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引用次数: 0

Abstract

To meet the application requirements of high magnetic field and high current in future fusion magnet systems, a compact twisted stacked tape cable with high current density is proposed. Three stepped grooves are evenly distributed around a circular former, and a 20+10 superconducting tapes configuration is arranged in each single groove. The performance of the cable under self-field is investigated through simulation modeling and experiment on a 1-meter sample. Firstly, the electromagnetic and mechanical properties of cables are studied through simulation. According to the simulation results, the prospective critical current reaches 5090 A under self-field at 77 K while the maximum von Mises stress and volumetric strain obtained from the simulation during the current-carrying process are within acceptable ranges. A sample with a twist pitch of 300 mm is fabricated, consisting of 18 superconducting tapes and 72 copper tapes. The measured and simulated results of the critical current of this sample are 1900 A and 1970 A respectively, with a deviation of 3.5 percent. The feasibility of the proposed cable has been preliminarily demonstrated through these experimental and simulation results. Subsequent research will be conducted on the optimization of cable parameters, including geometric dimensions and tape capacity, to achieve better performance.

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设计和测试用于聚变应用的紧凑型双绞叠层 YBCO 电缆

为了满足未来核聚变磁体系统对高磁场和大电流的应用要求，我们提出了一种具有高电流密度的紧凑型双绞叠带电缆。三条阶梯状沟槽均匀分布在一个圆形前体周围，每条沟槽中排列着 20+10 条超导带。通过仿真建模和 1 米样品实验，研究了该电缆在自场作用下的性能。首先，通过仿真研究了电缆的电磁特性和机械特性。根据仿真结果，在 77 K 的自场条件下，前瞻临界电流达到 5090 A，而在载流过程中，仿真得到的最大 von Mises 应力和体积应变均在可接受的范围内。我们制作了一个扭距为 300 毫米的样品，由 18 条超导带和 72 条铜带组成。该样品临界电流的测量和模拟结果分别为 1900 A 和 1970 A，偏差为 3.5%。这些实验和模拟结果初步证明了拟议电缆的可行性。后续研究将针对电缆参数（包括几何尺寸和带容量）进行优化，以实现更好的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.