China successfully developed ITER's first large superconducting magnet coil
Recently, the International Thermonuclear Fusion Experimental Reactor (ITER) project developed by the Institute of Plasma Physics of the Chinese Academy of Sciences Hefei Institute of Material Science plans to complete the delivery of the first large superconducting magnet coil, Pole Field 6 Coil (PF6 Coil) It will be shipped to France ITER site by sea.
The PF6 coil is located at the bottom of the superconducting magnet of the ITER experimental reactor. It is the first super important large coil component to be installed in place. It consists of 9 coil bodies wound into a double pie structure and a series of supporting accessories. , Equivalent to the weight of two Boeing 747 aircraft. The niobium-titanium superconducting conductor used in the winding of the coil is about 13.5 kilometers long, and the outer diameter of the coil body is about 11.2 meters.
According to reports, the PF6 coil is the world's largest and most difficult superconducting magnet. The energy storage is 60 times the largest polar field magnet of the EAST device in China. Its normal operation will determine whether it can "light" the plasma And to maintain the steady-state "burning" of the plasma is one of the most important coils that determine the success or failure of the ITER device.
After more than two years of research, the PF6 project team of the Plasma Institute of the Hefei Institute of Material Science, Chinese Academy of Sciences successfully mastered this core technology. All the key manufacturing processes and components of the PF6 coil have passed the ITER international group certification at one time, and the pass rate of double cake manufacturing has reached 100%. The performance of the superconducting joint is significantly better than the ITER technical requirements.
The successful manufacture of PF6 coils not only breaks the technical barriers of developed countries in this field, the production equipment has achieved national production, but also developed and perfected the superconducting magnet manufacturing standards and related specifications, and has bred more than ten special standards It provides a useful reference for the future construction of China's fusion reactor standards, and also provides a successful example for further expanding the depth and breadth of cooperation between China and Europe in the field of nuclear fusion energy. (Reporter Wu Changfeng)
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