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Professor Yan Lixin's Research Group in the Department of Engineering Physics at Tsinghua University Collaborates to Achieve a Beyond-Megawatt Average Power Laser Optical Enhancement Cavity

Recently, the research group of Professor Yan Lixin from the Department of Engineering Physics at Tsinghua University, in collaboration with the team of Professor Fabian Zomer from IJCLab at Université Paris-Saclay, France, published important progress in the field of high-finesse optical enhancement cavities. The research team achieved a four-mirror bow-tie optical cavity with an average laser power exceeding 1 megawatt and its stable operation at the Tsinghua University Accelerator Laboratory, with a maximum intracavity average power of 1.15 MW, while maintaining an excellent Gaussian fundamental mode. This is the first published work internationally on an optical enhancement cavity with an intracavity average laser power reaching the megawatt level, which will lay a solid foundation for important applications such as the development of steady-state microbunching (SSMB) extreme ultraviolet light sources, quantum electrodynamics (QED) vacuum nonlinearity detection, ion beam photoneutralization for magnetic confinement fusion, and the development of future inertial confinement fusion reactors.

2026-09-18

The "Weaponized" Nuclear Power Plant: Dual Narratives and Governance Dilemmas in the Zaporizhzhia Nuclear Crisis

The "Weaponized" Nuclear Power Plant: Dual Narratives and Governance Dilemmas in the Zaporizhzhia Nuclear Crisis

2026-09-17

US and UK Join Forces to Accelerate Commercialization of Fusion Energy

At the Global Fusion Policy Summit held in London on Monday, the UK Atomic Energy Authority (UKAEA) and the Princeton Plasma Physics Laboratory (PPPL), which operates under the US Department of Energy, signed a joint statement of intent. The two sides plan to establish a partnership called the SUNRISE–STELLAR-AI Federation, integrating the UK's first supercomputer dedicated to fusion research, SUNRISE (funded by the UK government with £45 million), with PPPL's STELLAR-AI supercomputing platform (costing $13 million), to leverage artificial intelligence (AI) to accelerate fusion energy R&D. The collaboration builds on a memorandum of understanding signed by both parties in June this year and will utilize the UKAEA...

2026-09-16

Construction of the "Helong-2" project begins, advancing toward hydrogen-boron fusion power generation

On September 15, the groundbreaking ceremony for the construction project of ENN Fusion's spherical torus hydrogen-boron plasma platform (the Helong-2 device) was grandly held at the ENN Fusion R&D Center in Langfang Economic and Technological Development Zone, Hebei Province. The Helong-2 construction project covers approximately 120 mu and focuses on building more than ten core systems to create the world's leading hydrogen-boron fusion experimental platform; the park is expected to be ready for equipment entry by the end of June 2027, complete device construction and commissioning and enter the experimental phase by the end of 2027, with the goal of lighting the first lamp of hydrogen-boron fusion by 2030. Planning rendering of the Helong-2 spherical torus hydrogen-boron fusion park. Officials from relevant departments of Hebei Province and Langfang City, and heads of the project construction unit, design unit, construction unit, and supervision unit attended the groundbreaking ceremony and jointly laid the foundation and turned soil for the project.

2026-09-16

Symposium on Frontier Progress and Key Engineering Issues of Controlled Nuclear Fusion Held in Beijing

On August 30, a small-scale high-end brand exchange event—the Symposium on Frontier Progress and Key Engineering Issues of Controlled Nuclear Fusion, supported by the China Association for Science and Technology and hosted by the Chinese Nuclear Society—was held at the China Science and Technology Hall. More than 20 frontline experts from universities, research institutes, and industry engaged in exchange and discussion on relevant topics. The event focused on the strategic needs of national low-carbon transition and energy self-sufficiency and security, discussed frontier progress and key issues in the engineering implementation of controlled nuclear fusion, and aimed to help cultivate strategic emerging industries and accelerate the building of an energy powerhouse. Professor Luan Benli of Yantai University served as executive chairman, and Professor Liu Shichang of North China Electric Power University served as academic secretary. The symposium featured...

2026-09-15

ITER Organization Deputy Director-General Luo Delong and his delegation visited China Fusion Energy Co., Ltd. for research and guidance

On September 11, Luo Delong, Deputy Director-General of the International Thermonuclear Experimental Reactor (ITER) Organization, and his delegation visited China Fusion Energy Co., Ltd. (hereinafter referred to as "China Fusion") for research and guidance, gaining an in-depth understanding of China Fusion's overall development situation and the progress of key task implementation. Zhang Libo, General Manager of China Fusion, accompanied the research visit. During the visit, both parties held a special symposium. On behalf of China Fusion, Zhang Libo extended a warm welcome to Luo Delong and his delegation, and expressed sincere gratitude to the ITER Organization and Mr. Luo Delong for their concern, support, and guidance regarding China Fusion's development and the fulfillment of ITER Project-related tasks. At the meeting, Zhong Wulv, Chief Engineer of China Fusion, delivered an overall situation report, focusing on...

2026-09-14

US Fusion Company Commonwealth Fusion Systems Secures $1 Billion Investment from South Korea's Hyundai

Recently, the US nuclear fusion company Commonwealth Fusion Systems, backed by Bill Gates, has secured a $1 billion investment from South Korea's Hyundai Motor Group to build its commercial fusion power plant. Chung Ho-eun, Executive Vice President of Hyundai Motor Group, stated that the plan will enable both parties to explore engineering collaboration on a commercial fusion power plant project called ARC. Fusion energy is expected to play an important role in meeting growing global energy demand while supporting a more sustainable future. As of June this year, this hardware solution has received formal academic confirmation of its physical feasibility. Following a peer-reviewed study, CFS validated the ARC des...

2026-09-14

Lower Saxony, Germany Plans to Build Europe's First Large-Scale Fusion-Grade High-Temperature Superconducting Tape Plant

Proxima Fusion and the Lower Saxony state government of Germany signed a memorandum of understanding in Hanover on September 9, planning to build Europe's first large-scale fusion-grade high-temperature superconducting tape production facility in the state, laying the foundation for large-scale industrial production of high-temperature superconducting (HTS) tape. According to the plan, the first two phases of the project involve an investment of approximately 140 million euros, with public funds and private capital each covering about half. Of this, Lower Saxony plans to contribute 21 million euros, accounting for nearly 30% of the public funding portion. The first two phases of construction are expected to be completed by the end of 2029. High-temperature superconducting tape is a type of metal tape that exhibits superconducting properties at relatively higher temperatures. In the superconducting state, it can transmit current with nearly zero resistive loss and is used to manufacture high-power, compact electromagnets. For stellarator fusion devices, magnets made from high-temperature superconducting tape can generate the magnetic fields needed to confine and control high-temperature plasma, making them an important foundational material for achieving compact fusion devices and future fusion power plants.

2026-09-12

First Supercapacitor Pulsed Power Supply System of the HL-3 Upgrade Project Successfully Handed Over

On September 10, the 300MVA/3000MJ supercapacitor pulsed power supply system of the HL-3 upgrade project was successfully handed over. This is the first system of the project to complete handover, marking that the project construction is gradually transitioning from the equipment installation and subsystem static commissioning stage to the system joint commissioning stage, providing support for advancing fusion engineering. Zhang Libo, President and Deputy Secretary of the Party Committee of the Southwestern Institute of Physics, and Chen Qingchuan, Vice President, attended the handover ceremony. Zhang Libo stated at the ceremony that the completion of the handover of the first system is the result of collaborative efforts by all participating units, accumulating experience and creating conditions for subsequent system joint commissioning. All parties will continue to consolidate responsibilities and advance key milestones on schedule....

2026-09-12

Yanchaojuneng Completes VPI of Stainless Steel-Jacketed Superconducting Prototype Coil for Stellarator

Recently, Yanchaojuneng (Shanghai) Technology Co., Ltd. completed vacuum pressure impregnation (VPI) of a next-generation stellarator stainless steel-jacketed three-dimensional shaped superconducting prototype coil. Previously, the prototype coil had completed two core processes: three-dimensional precision winding and ground insulation wrapping. The completion of VPI signifies that the company has established an autonomous process chain from coil winding and forming, insulation wrapping, to integrated insulation curing. The stellarator is an important device type for steady-state operation in the field of controlled nuclear fusion, capable of reducing the risk of major plasma disruptions. Three-dimensional shaped superconducting coils are the core components for building the magnetic field that confines plasma in a stellarator. Public information shows that Germany's W7-X stellarator uses aluminum alloy jackets...

2026-09-10

India's Hylenr Technologies Claims Detection of Rare Earth Element Signatures in Lattice-Confined Fusion System

Indian deep-tech company Hylenr Technologies announced on September 9 that it has observed evidence of element formation in an engineered lattice structure system, including rare earth element signatures. The company stated that this result could provide a technological pathway for nucleosynthesis and strategic materials production that differs from traditional mining. According to the company, the related results stem from Hylenr Technologies' more than 10 years of fusion technology research centered on lattice-confined fusion. Part of the research, titled "Nuclear Signatures in Hydrogen-Loaded Nickel-Palladium Lattice-Confined Systems," was presented earlier this month at the 27th International Conference on Condensed Matter Nuclear Science...

2026-09-10

US-based Thea Energy Unveils Helios Stellarator Fusion Power Plant Design

On September 9, 2026, Thea Energy, Inc., a fusion energy company based in Kearny, New Jersey, announced that 16 peer-reviewed papers on its Helios fusion power plant design had been published in a special issue of Fusion Engineering and Design (FED). The special issue, titled "Thea Energy's Helios Stellarator Power Plant Design," presents the Helios architecture and its key engineering solutions. According to Thea Energy, Helios is a stellarator fusion power plant architecture oriented toward commercial deployment requirements, integrating magnet coils that can be controlled by software to adapt to actual operating conditions, a stellarator divertor exhaust system for continuous fusion power generation operations, and a sectorized maintenance scheme supporting long-term operation...

2026-09-10

UK Tokamak Energy completes testing of Demo4 fusion high-temperature superconducting magnet system

On September 9, 2026, Tokamak Energy of the UK announced the completion of a 14-month testing campaign for its Demo4 fusion magnet system, validating the company's capabilities in the design, manufacture, integration, and operation of complete high-temperature superconducting (HTS) magnet systems. The technical experience gained from Demo4 testing is now being applied to the collaboration between Tokamak Energy and UK Fusion Energy (UKFE), supporting the development of HTS magnet systems for the Spherical Tokamak for Energy Production (STEP) fusion program. The results also target HTS commercial applications beyond fusion, and...

2026-09-09

Two South Korean companies to collaborate on expanding fusion energy projects

KEPCO Engineering & Construction (KEPCO E&C) signed a Memorandum of Understanding (MOU) with Enable Fusion on September 7 at the Daejeon Science Center to establish a cooperation framework for participation in fusion energy projects, technology sharing, and joint business development. Kim Tae-kyun, President of KEPCO E&C, and Lee Kyung-soo, CEO of Enable Fusion, attended the signing ceremony. Under the MOU, the two parties will provide each other with technical and commercial information required for participation in the construction of fusion power facilities and jointly develop fusion energy projects both domestically and overseas. KEPCO E&C plans to...

2026-09-08

Digital twins are becoming an important R&D pathway in fusion research

Recently, a new paper reviewed the progress of digital twin technology in fusion research over the past five years and noted that several key gaps remain before a complete digital twin model of a fusion power plant can be achieved. Simulating the movement of tungsten in the plasma core. Copyright: (F. Jenko et al., 2026, *Nuclear Fusion* 66 116014) Digital twins are a class of virtual models that reflect the structure, environment, and behavior of physical systems, and can be used to predict future system states and inform real-world decision-making. In fusion research, as issues in plasma physics, device engineering, and material interactions grow increasingly complex, digital twins are considered promising...

2026-09-07