6月27日，中国科学院合肥物质科学研究院等离子体物理研究所“人造太阳”项目取得最新进展，环向场超导磁体、高温超导中心螺管线圈等两套聚变堆关键超导磁体先后完成研制验收与满参数测试，核心技术实现100%国产化，综合性能跃升至国际前列。

On June 27th, the "artificial sun" project of the Institute of Plasma Physics at the Hefei Institute of Physical Science of the Chinese Academy of Sciences made the latest progress. Two key superconducting magnets for the fusion reactor, namely the toroidal field superconducting magnet and the high-temperature superconducting central solenoid, have successively completed the research and development, acceptance, and full-parameter testing. The core technology has achieved 100% domestic production, and the comprehensive performance has risen to the forefront of the international level.

聚变堆环向场超导磁体顺利完成工艺工序，通过专家组综合验收。该磁体长21米、宽12米、高3.3米，总重量达582吨，体积是国际热核聚变堆ITER TF磁体的1.3倍，储能是其3倍，是目前全球尺寸最大的聚变堆超导磁体。

The toroidal field superconducting magnet of the fusion reactor has successfully completed the process procedures and has passed the comprehensive acceptance by the expert group. This magnet is 21 meters long, 12 meters wide and 3.3 meters high, with a total weight of 582 tons. Its volume is 1.3 times that of the TF magnet of the international thermonuclear fusion reactor ITER, and its energy storage is three times that of it. It is currently the largest fusion reactor superconducting magnet in the world in terms of size.

环向场磁体是聚变堆最重要的部件之一，在聚变装置运行过程中，超导磁体产生强磁场束缚上亿度高温等离子体，其中环向场磁体负责构建环向磁场，借助洛伦兹力牢牢约束等离子体，减少高能粒子对真空室器壁的冲击损耗。该项目历时6年，经过设计、研制、测试等一系列环节，整套磁体全链条实现100%国产化。项目申请授权专利47项，制定标准14项，各项性能指标领跑国际同类产品。

The toroidal field magnet is one of the most important components of a fusion reactor. During the operation of the fusion device, the superconducting magnet generates a strong magnetic field to confine the plasma at temperatures exceeding 10 million degrees. Among them, the toroidal field magnet is responsible for constructing the toroidal magnetic field, and by leveraging the Lorentz force, it firmly restrains the plasma, reducing the impact loss of high-energy particles on the vacuum chamber wall. This project lasted for 6 years, going through design, development, testing and other stages. The entire magnet chain achieved 100% domestic production. The project applied for 47 patents, formulated 14 standards, and its performance indicators led those of similar international products.

同期，高温超导中心螺管线圈完成满工况参数测试。实测数据显示，线圈稳定载流60千安，储能6.03兆焦，最大磁场变化率每秒5.1特斯拉，接头电阻0.87纳欧，关键指标和核心性能达到国际领先水平。线圈从超导材料、结构设计到成套制备工艺均实现完全国产化。

At the same time, the superconducting center solenoid coil completed full-condition parameter tests. The actual measurement results showed that the coil could carry a stable current of 60 kiloamperes, store 6.03 megajoules of energy, have a maximum magnetic field change rate of 5.1 teslas per second, and the joint resistance was 0.87 nanohms. The key indicators and core performance reached the international leading level. The coil has achieved complete nationalization from superconducting materials, structural design to the complete set of preparation processes.

中心螺管线圈的核心作用是感应、驱动等离子体电流，并动态调节等离子体约束形态。针对严苛的技术难度及装置极端运行条件需求，项目团队创新采用应力分散强力支撑结构与高低温混合磁体设计方案，围绕核心材料、结构设计、制备工艺等开展全链条技术攻关，先后攻克聚变堆高稳定性磁体设计、大电流高温超导导体研制等十余项关键技术难题，成功完成首个聚变堆磁体制备和满参数测试，满足装置未来运行需求。

The core function of the central solenoid coil is to induce and drive plasma currents and dynamically adjust the plasma confinement form. In response to the extremely high technical difficulty and the extreme operating conditions required by the device, the project team innovatively adopted a stress-dispersive strong support structure and a high-temperature mixed magnet design scheme. They carried out full-chain technical research and development around core materials, structural design, and preparation processes, and successively overcame more than ten key technical difficulties such as the design of high-stability magnets for fusion reactors and the development of high-current, high-temperature superconducting conductors. They successfully completed the preparation and full-parameter testing of the first fusion reactor magnet, meeting the future operation requirements of the device.

项目团队负责人表示，两套核心超导磁体的接连突破，为我国建设聚变堆进一步筑牢超导工程基础，有力提升聚变堆建设自主研发与工程建造能力。

The project team leader stated that the consecutive breakthroughs of the two sets of core superconducting magnets have further strengthened the superconducting engineering foundation for the construction of fusion reactors in our country, and have significantly enhanced the independent research and development as well as engineering construction capabilities for the construction of fusion reactors.