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2022-08-14
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The Chinese Academy of Sciences has successfully developed a world-class steady-state magnet device

according to the Hefei Institute of Physical Sciences, the hybrid magnet device independently developed by the strong magnetic field science center of the Chinese Academy of Sciences achieved the mission goal of 400000 Gauss steady-state magnetic field on the 13th, reaching the world-class level, and becoming the second highest steady-state strong magnetic field device in the world

at present, the steady-state strong magnetic field device with the highest magnetic field intensity in the world is in the national strong magnetic field laboratory of the United States, with a record of 450000 Gauss

it is understood that a strong magnetic field is an important extreme experimental condition, and the structure and transformation process of substances in a strong magnetic field may change, which provides a new way and opens up a new space for the research of physics, chemistry, materials, biology and other disciplines

the hybrid magnet experimental device project of the Chinese Academy of Sciences is to build the extreme experimental conditions of steady-state strong magnetic field, so as to meet the needs of China's cutting-edge scientific research for strong magnetic field experimental conditions to the greatest extent

it is reported that the hybrid magnet experimental device of the Chinese Academy of Sciences is composed of an external superconducting magnet and a water-cooled magnet sheathed in it. One month ago, the water-cooled magnet was successfully debugged alone, which could produce a steady-state magnetic field of 300000 gauss; A week ago, a large high-field superconducting magnet with a low-temperature aperture of 920 mm was successfully debugged, capable of producing a steady-state magnetic field of 100000 Gauss. On the 13th, the two magnets successfully combined to produce a steady-state magnetic field of 400000 Gauss, which finally fulfilled the dream pursued by Chinese researchers for eight years

for strips less than 0.2mm, it is reported that pursuing a very high magnetic field is like climbing Mount Everest. Before reaching the limit, many difficulties need to be overcome to succeed. Hybrid magnet is the main choice that produces the highest steady-state magnetic field in the world, but if the material is not innovative, choosing it means choosing a series of major technical challenges - facing huge electromagnetic force and heating, water-cooled magnets must solve the optimization of materials and structures, and each project will work step by step according to the "standard" procedure; Because of the large aperture of superconducting magnet, the choice of material and structure of conductor, the production process of magnet and the matching low-temperature cooling technology are all difficult problems

the successfully developed hybrid magnet device of the Chinese Academy of Sciences has overcome a series of technical problems, and it has become an important milestone in the development of strong magnetic field technology in China. It is reported that this hybrid magnet device will be mainly used to study the quantum behavior of new energy efficient materials

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