国际热核聚变实验堆计划校正场线圈采购包完成交付

Core Viewpoint - The successful completion and delivery of the correction field coil procurement package for the International Thermonuclear Experimental Reactor (ITER) marks a significant milestone for the Hefei Institute of Physical Science, showcasing China's advancements in fusion technology and its contributions to the global ITER project [1][3]. Group 1: Project Overview - The ITER project is the largest and most complex tokamak device globally, consisting of three groups of 18 correction field coils that are crucial for the magnetic system of the ITER main device [3]. - The correction field coils directly influence the plasma operating parameters of the ITER device, making their successful development and timely installation critical [3]. Group 2: Technological Achievements - The procurement package was developed entirely through independent research and manufacturing by China, with a project team that took 15 years to complete the delivery [3]. - The team achieved 100% independent development of a large non-circular cross-section tension-free superconducting magnet winding production line and pioneered high-precision three-dimensional curved winding technology [3]. - An innovative intermittent temperature control manual welding technique was developed, improving core indicators by three times compared to ITER standards, and this package became the first to complete helium pipe welding certification for the ITER project [3]. Group 3: Material and Industry Impact - The team collaborated with domestic enterprises to develop ITER-grade 316LN austenitic stainless steel extruded profiles, overcoming material localization challenges and filling industry gaps [3]. - A comprehensive research support system was established, encompassing standards, patents, and multiple specialized laboratories, providing robust support for China's foundational research and applications in the fusion field [3][7]. Group 4: Contribution to ITER - As a key unit in the Chinese ITER working group, the Hefei Institute of Physical Science is responsible for several procurement packages, including superconducting conductors and correction field coils, representing a significant portion of China's participation in the ITER project [7]. - The institute has mastered critical technologies in fusion engineering through independent research, achieving leading delivery schedules and product quality among the seven parties involved in ITER, thereby contributing core Chinese strength to the advancement of the ITER project [7].