核聚变深度：磁体材料迭代推动产业升级（附34页PPT）

Group 1 - The fusion industry is entering an accelerated phase driven by policy support and capital expenditure, with major countries expected to introduce fusion policies by 2025, marking a shift from laboratory research to industrial layout and regulatory framework construction [2][9] - Domestic policy support for controllable nuclear fusion is forming a clear advancement logic, with a national framework being established to optimize regulatory processes and provide clear guidance for technological research and development [6][8] - The superconducting materials landscape is characterized by a parallel development of low-temperature superconductors (NbTi, Nb₃Sn) and high-temperature superconductors (REBCO), with low-temperature superconductors currently supporting existing fusion operations and high-temperature superconductors poised to become key for next-generation high-field fusion technology breakthroughs [2][3][27] Group 2 - The magnet system is a core cost component of fusion projects, with the ITER project showing that component costs account for 86%, of which magnets represent 28%, primarily due to the reliance on high-cost low-temperature liquid helium for cooling [3][55] - In high-temperature superconducting projects, the cost of the magnet system is expected to increase further, as seen in the ARC project where the magnet system accounts for 46% of the total cost [57] - The global market for second-generation high-temperature superconducting tapes used in controllable nuclear fusion devices 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 59.3% from 2024 to 2030 [3][65] Group 3 - Investment recommendations focus on the magnet segment of the fusion system, which is currently transitioning from low-temperature to high-temperature technology, indicating a significant demand increase driven by the capital expenditure cycle in nuclear fusion [3][8] - The BEST project, aimed at bridging the gap between experimental and demonstration reactors, is expected to accelerate capital expenditure, with significant procurement activities already underway [59][63] - The global market for superconducting materials is expected to see substantial growth, driven by the increasing demand for high-temperature superconductors in fusion applications, with REBCO materials showing significant potential for enhancing magnetic field strength and reducing magnet size [27][31]