On October 14, the 2nd Ministerial Meeting of the IAEA World Fusion Energy Group 2025 and the 30th IAEA Fusion Energy Conference (FEC 2025) was held in Chengdu. Zhang Guoqing, Vice Premier of the State Council, Wang Xiaohui, Secretary of the Sichuan Provincial Committee, Shi Xiaolin, Governor of the Sichuan Provincial People’s Government, Shan Zhongde, Director of the National Atomic Energy Agency of China, Rafael Grossi, Director General of the International Atomic Energy Agency, Pietro Balabaski, Director General of ITER, Tony Dorn, Chairman of the European Union Fusion Commission, Chen Jiachang, Vice Minister of Ministry of Science and Technology of China, Liu Jing, Deputy Director of the China Atomic Energy Agency, and Shen Yanfeng, Chairman of the China Nuclear Industry Group Co., Ltd., attended the opening ceremony.
The World Fusion Energy Group, launched by the International Atomic Energy Agency in October 2023, aims to strengthen international consensus, promote the nuclear science and technology industry and public and private institutions in various countries to increase investment, and accelerate the process of fusion energy engineering demonstration and commercial application. With the theme of “For the Clean Energy Future”, about 150 participants from 27 countries and 6 international organizations attended the meeting to discuss the strategic path and cooperation opportunities for fusion energy development. Tan Yi, founder and chief scientist of Startorus Fusion, was invited to attend the meeting as a representative of China’s commercial fusion enterprises.
In the national speech session, ministers or authorized high-level representatives of various countries shared their policies, progress and prospects for the development of fusion energy science and technology industry; thematic discussions were held around the three major topics of “Fusion Energy Status: Closing the Gap”, “Fusion Energy Regulation: Global Debate” and “Fusion Energy Supply Chain: From Scientific Research to Industrialization”, and experts and scholars exchanged in-depth with representatives of international organizations. The meeting released the report of IAEA World Fusion Outlook 2025 and the Chengdu Statement of the World Fusion Energy Group. At the symposium on “Fusion Supply Chain: From Scientific Research to Industrialization”, Tan Yi shared issues related to the development and cooperation of the fusion industry chain. He said that with the support of national macro-policy and top-level coordination, the growing demand of state-owned and private fusion enterprises is the most effective means to build the fusion industry chain, and the key materials and technologies related to fusion will be broken through one by one with the joint efforts of manufacturing enterprises. In terms of core technology and material processing, Startorus Fusion adheres to the cooperation strategy of “internal verification first, joint directional development, delivery and mass production after maturity”, and gradually consolidates the industrial foundation of autonomy and controllability. He further pointed out that the cooperation between private fusion companies and the industry is an inevitable choice to accelerate the process of fusion research and development. The benign market competition mechanism will also promote the sustainable development of the whole industry.
The successful convening of this ministerial meeting has effectively built a high-level dialogue platform in the field of global fusion energy, significantly enhanced communication and mutual trust among countries in policy coordination, technological innovation and industrial integration, and laid a solid foundation for broader and deeper international cooperation in the future. As a representative of China’s commercial fusion energy enterprises, Startorus Fusion participated in the meeting, which not only demonstrated the positive role and responsibility of Startorus Fusion in promoting the development of global fusion energy, but also reflected China’s innovative vitality and international influence in the field of fusion energy.
At the 30th IAEA Fusion Energy Conference (FEC 2025) held at the same time, more than ten fusion scientists and engineers demonstrated and shared the latest research results in hardware, software, AI and other related fields of SUNIST-2, NTST and other apparatus.
A Novel High Temperature Superconducting Cable Design for Spherical Tokamaks; the cable uses a twisted stack structure and external cooling channels to reduce the critical bending radius to 400 mm, achieving a cross-section utilization of 21.5% and an engineering current density of 50 A/mm² at a magnetic field change rate of 24T/s, which provides an effective solution for the spherical Tokamak magnet system.
Ion Doppler Spectroscopy on the SUNIST-2; it can measures the evolution of the radial ion stability profile covering the entire midplane of the SUNIST-2 apparatus simultaneously throughout the discharge.
A Physics-Informed Neural Network for Real-Time, Data-Efficient Plasma Equilibrium Reconstruction in SUNIST-2: based on Deep Operator Neural Network (DeepONet), it provides a unified framework combining Grad—Shafranov constraints and diagnostic data. This framework can achieve real-time unlabeled plasma equilibrium reconstruction with only about 100 discharge data, and has good generalization ability.
Structural Design of the Negative Triangularity Spherical Tokamak (NTST); it completes the design and optimization of the magnet coil and the vacuum Dewar based on the 77K cryogenic copper conductor magnet scheme with large current/low resistance and the vacuum chamber structure scheme with high strength/high toroidal resistance.
Design and Test of a Unified Modular Pulsed Power Supply for All Magnets of the Negative Triangularity Spherical Tokamak (NTST); it uses the low cost, modular design simultaneously meeting the voltage and current requirements of all magnet systems of the NTST apparatus through a flexible series-parallel configuration.
Experimental and Numerical Research on High Temperature Superconducting Demountable Joints for Toroidal Field Coils of Tokamaks; it puts forward the damage-resistant copper tape packaging technology and solder layered differential design innovatively, which provides a feasible Chinese solution for solving the core problem of rapid maintenance and component replacement of the future fusion demonstration reactor (DEMO).
TEMO: A Comprehensive and Versatile Equilibrium Modelling Toolbox for Tokamak Operations: with balance as the core, the toolbox extends many applications, such as plasma linear and nonlinear response model analysis, discharge feedforward waveform design, and feedback controller design.
In the future, Startorus Fusion will continue to uphold the concept of open cooperation and innovation, work with global partners to promote fusion energy from vision to reality, and contribute to building a clean, safe and sustainable energy future.
