The upgrade of the Pulsed High Magnetic Field Facility (PHMFF-U, stage II), which is one of the National Major Science and Technology Infrastructure Projects within the “National Fourteenth Five-Year Plan” funded by the Chinese National Development and Reformation Committee, was officially approved in October, 2023. The PHMFF-U represents the upgrade of the PHMFF (stage I) and is planned to be built right next to stage I on the campus of Huazhong University of Science and Technology, Wuhan, China.

Stage II is planned to be accomplished in 2028. Three buildings with a total area of 47,000 m2 are planned to be built during the stage (Figure 1), which will provide more experimental stations, meeting the user demands for research resources. The pulsed magnet aiming at peak value up to 110 T in 10 mm diameter and 70 T with 10-ms flat-top of 14 mm diameter as well as a 9.5-T magnetic resonance imaging (MRI) superconducting magnet with bore of 800 mm will be constructed. The energy of the capacitor bank power supply will increase to 167 MJ from current 28 MJ, allowing the generation of a higher magnetic field. In addition to the existing experimental stations for electrical transport, magnetic properties, magneto-optics, and electron spin resonance studies, more than a dozen new stations will be constructed, providing new research capabilities in the ultra-high magnetic field, including magnetic heat measurements, scanning tunneling microscopy, solid nuclear magnetic resonance spectroscopy, biological MRI, and high-power terahertz spectroscopy. By using the temporal and spatial distributions of the pulsed magnetic field, expressed respectively in dB/dt and dB/dr, the facility will also be applied to the magnetic forming for large-size components made of metal and in the post-assembly magnetization for permanent magnet equipment. Finally, the upgraded facility is expected to be a leading facility pursuing the highest magnetic fields and state-of-the-art measurement techniques and offering research opportunities in more fields, including condensed matter physics and material science, life science, and strong electromagnetic engineering.

Figure 1. Schematic top view of the PHMFF (A) Building of stage I (8,000 m², accomplished in 2011). (B) Building of stage II (47,000 m², planned to be accomplished in 2026). (C) Simulated waveform of 110-T magnetic field pulse.