Magnetic Field Record: China Achieves 700,000x Earth’s Strength
- Chinese scientists at the Institute of Plasma Physics (ASIPP) in hefei, Anhui Province, have successfully generated a magnetic field of 35.1 Tesla, setting a new world record. The...
- Earth naturally possesses a geomagnetic field of approximately 0.5 gauss.
- Liu fang, a researcher at ASIPP, explained that the newly developed magnet utilizes high-temperature superconducting insert-coil technology, integrated coaxially with low-temperature superconducting magnets.This hybrid approach allows for maximizing...
“`html
Chinese Scientists Achieve Record-Breaking 35.1 Tesla Magnetic Field
Table of Contents
Published September 28, 2023, 11:04 AM PDT
Breakthrough in Superconducting Magnet Technology
Chinese scientists at the Institute of Plasma Physics (ASIPP) in hefei, Anhui Province, have successfully generated a magnetic field of 35.1 Tesla, setting a new world record. The achievement, announced recently, represents a meaningful leap forward in superconducting magnet technology and has major implications for the future of fusion energy research. The project was a collaborative effort involving the Hefei international Applied Superconductivity Center, the Institute of Energy of the Hefei Extensive National science Center, and Tsinghua University.
Understanding the Science: Superconductivity and Magnetic Fields
Earth naturally possesses a geomagnetic field of approximately 0.5 gauss. Superconducting magnets, constructed by winding materials that exhibit superconductivity, are capable of generating vastly stronger magnetic fields while transmitting large electrical currents without energy loss. This lossless transmission is a key advantage for applications requiring high power and efficiency.
Liu fang, a researcher at ASIPP, explained that the newly developed magnet utilizes high-temperature superconducting insert-coil technology, integrated coaxially with low-temperature superconducting magnets.This hybrid approach allows for maximizing the magnetic field strength while maintaining stability.
Overcoming Engineering Challenges
The team faced considerable engineering hurdles in developing the magnet. These included managing stress concentration within the superconducting materials, mitigating the effects of shielding currents, and addressing the complex interactions between multiple fields under the extreme conditions of low temperature and high magnetic field strength. According to the research team, these innovations substantially improved the magnet’s mechanical stability and electromagnetic performance in these challenging environments.
Accomplished Testing and Verification
during rigorous testing, the magnet was energized to 35.1 Tesla and maintained stable operation for 30 minutes before being safely demagnetized. This successful operation fully validated the technical approach and demonstrated the magnet’s reliability. The achieved magnetic field strength is more than 700,000 times that of Earth’s geomagnetic field, exceeding the previous world record of 32.35 Tesla (equivalent to 323,500 gauss).
Implications for fusion Energy
High-field superconducting magnets are essential components of magnetic confinement fusion devices. These devices use powerful magnetic fields to create a “magnetic cage” that safely contains high-temperature plasma, allowing for sustained nuclear fusion reactions. ASIPP has been a leading institution in fusion research and has recently achieved complete domestic production of superconducting materials, devices, and systems, reducing reliance on foreign suppliers.
As a key participant in the International Thermonuclear Experimental Reactor (ITER) project,ASIPP is responsible for numerous procurement packages,including superconductors,correction coils,and magnet feeders. ITER, a collaborative project involving 35 nations, aims to demonstrate the scientific and technological feasibility of fusion power. ITER official website
