Advances in High Field Magnets and Recent Technical Trends of Superconducting Magnets

We may not only observe and obtain information of matter non-invasively, but also control the process of crystal growth and the synthesis of materials by using high magnetic fields. In 1936, the first 10 T high magnetic field was generated by water-cooled resistive magnet by professor F. Bitter at MIT for the research of Zeeman effect, and by the development of magnet technology the 38 T magnetic field was obtained at Nijmegen HFML in 2014. In June, 2000, 45 T high magnetic field, the highest static magnetic field, was achieved by hybrid magnet at NHMFL, which is the combination of a resistive magnet and a superconducting magnet. The high field resistive magnet consumes ~ 10 MW of electric power and need large chiller system because of Ohmic heating generated by resistive magnet. On the contrary, the superconducting magnet has “0” electrical resistance and almost no electrical energy loss. But the critical magnetic field of superconductor limited to reach higher magnetic field than resistive magnet. The appearance of the high temperature superconductor made possible to reach higher than 30 T and the 27 T is obtained in 2015 by 2G HTS magnet. Within several year 30 T class high field magnet will provide more opportunities and experimental time with better experimental conditions for user scientists and will contribute to advances in condensed matter physics and in bio and nano science and technology. :