From the Hefei Institute of Material Science of the Chinese Academy of Sciences, it was learned that the hybrid magnet device independently developed by the Strong Magnetic Field Science Center of the Institute achieved the mission goal of 400,000 Gaussian steady-state magnetic field, reaching world-class level and officially becoming the second highest magnetic field strength in the world. Steady-state strong magnetic field device.
At present, the steady-state strong magnetic field device with the highest magnetic field strength in the world is in the National Strong Magnetic Field Laboratory of the United States, and its record is 450,000 Gauss. It is understood that a strong magnetic field is an important extreme experimental condition. The structure of matter and its transformation process in a strong magnetic field may change, which provides a new way for the study of physics, chemistry, materials and biology. A new space.
The Chinese Academy of Sciences mixed magnet experimental device project is to build the extreme experimental conditions of steady-state strong magnetic field, and to meet the needs of China's cutting-edge scientific research for the conditions of strong magnetic field.
According to reports, the Chinese Academy of Sciences hybrid magnet experimental device is composed of an outer superconducting magnet and a water-cooled magnet nested therein. A month ago, the water-cooled magnet was successfully debugged alone, and it was able to generate a steady-state magnetic field of 300,000 Gauss. Before 1 week, a large-scale high-field superconducting magnet with a low-temperature aperture of 920 mm was successfully debugged, which could generate a steady-state magnetic field of 100,000 Gauss. On November 13th, the two magnets were successfully combined to produce a steady-state magnetic field of 400,000 Gauss.
According to reports, the pursuit of extremely high magnetic fields is like climbing Everest. Before reaching the limit, it is necessary to overcome many difficulties in order to succeed. Hybrid magnets are the main choice for generating the highest steady-state magnetic field internationally, but choosing it means choosing a series of major technical challenges – facing huge electromagnetic forces and heat, water-cooled magnets must address the optimal selection of materials and structures; superconductivity The magnet has a large aperture, and the material selection, structure selection, and magnet production process of the conductor, as well as the low-temperature cooling technology associated with it, are all problems.
The successful development of the Chinese Academy of Sciences hybrid magnet device has overcome a series of technical problems, which has become an important milestone in the development of China's strong magnetic field technology. It is reported that this hybrid magnet device will be mainly used for quantum behavior research of new functional materials.
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