可控核聚变专题：磁体材料更迭驱动托卡马克性能提升

Summary of Key Points from the Conference Call Industry Overview - The nuclear fusion sector is experiencing rapid advancements, with both state-owned and private enterprises exceeding expectations in project progress. The Helen project plans to sell electricity to Microsoft by 2030, indicating a rising phase for industry catalysts [1][2]. Core Insights and Arguments - Various technical routes for nuclear fusion exist, with magnetic confinement technology showing greater scalability potential. The Tokamak device is the mainstream choice, with projects like ITER and BEST adopting this technology, while smaller FRC designs are more suitable for distributed power generation [1][6]. - Superconducting materials are critical to Tokamak devices, with high-temperature superconductors expected to account for nearly 50% of materials used in the future. Companies to watch include Shanghai Superconductor, Yongding, and Jinda, as well as magnet companies like Lianchuang Optoelectronics [1][7]. - The magnetic confinement scheme is preferred due to its strong engineering feasibility and long energy confinement time, achieved through strong magnetic fields that confine charged particles for controlled nuclear fusion [1][8]. Market Trends and Projections - The market demand for high-temperature superconducting materials in nuclear fusion magnets is projected to grow from 300 million yuan in 2024 to 4.9 billion yuan by 2030, with a compound annual growth rate (CAGR) of approximately 60% [3][15]. - The current focus in the nuclear fusion sector includes domestic project planning and bidding, as well as ignition progress in international projects. Key upcoming events include the Chengdu advanced skills unveiling and various bidding activities from companies like Shanghai China Fusion Energy and Nova Fusion [2][5]. Technical Insights - The Tokamak discharge process involves three stages: gas injection into the vacuum chamber, rapid current induction to accelerate free electrons, and further gas injection to increase reactant density and temperature [10][11]. - Superconducting materials significantly enhance nuclear fusion performance, with early materials achieving magnetic field strengths of 3-5 Tesla, while future trends indicate potential peaks of 12 Tesla with high-temperature superconductors [12][14]. Competitive Landscape - In the superconducting cable sector, notable companies include ASD, FFG, and Furukawa Electric internationally, with domestic players like West Superconducting Cable and Shanghai Superconducting Cable leading the market. Shanghai Superconducting Cable is expanding rapidly and supplying to major projects [16][17]. Additional Important Points - The distinction between magnetic mirror, stellarator, and Tokamak devices lies in their magnetic field structures and plasma confinement methods, with Tokamak being the most researched and developed [9]. - High-temperature superconductors are more advantageous than low-temperature ones due to their operational efficiency in liquid nitrogen environments and lower production costs, despite the initial high costs associated with first-generation materials [13]. This summary encapsulates the essential insights and developments within the nuclear fusion industry as discussed in the conference call, highlighting both current trends and future projections.