2023/12/21 by Hongmin Yang, Jae Young Jang, Young Jin Hwang +4
Engineering · #Superconducting Materials and Applications #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics
paper · doi:10.1109/tasc.2023.3345266
This study explores the possibility of achieving magnetic field homogeneity comparable to that of nuclear magnetic resonance (NMR) magnets in a low temperature superconducting (LTS) magnet originally designed for physical property measurements. The LTS magnet used in the experiment has a significant advantage due to its large spatial margin for improving the magnetic field homogeneity of the NMR magnet, as it has a room-temperature (RT) bore diameter of 102 mm. However, certain low-order gradients pose a serious problem due to the shape of the magnet. Additionally, the absence of other shimming devices, typically present in NMR magnets, makes it difficult to improve magnetic field homogeneity. This study was conducted to determine whether it is possible to overcome these limitations and upgrade the field homogeneity of the magnet solely using multiple ferromagnetic shimming technology. This research addresses the enhancement of magnetic field homogeneity by effortlessly applying ferromagnetic shimming to the non-NMR LTS magnet, which incorporates both shimming to minimize specific gradients and traditional lattice structure shimming.