Numerical approach to calculating binding requirements in high-field STM superconducting magnets

With advancing demands in frontier science, maximizing both the magnetic field strength and diameter of superconducting magnets has become increasingly significant. However, as these parameters grow, the complexity of mechanical analysis for the magnet intensifies. Enhancing the structural stability of superconducting magnets through binding wires is a crucial challenge. Therefore, this paper proposes a numerical method to determine the requirements of binding layers. The finite element numerical method was used to comprehensively analyze the stress generated during the winding, cooling, and excitation of the 12T STM superconducting magnet being developed by the High Magnetic Field Laboratory of China (CHMFL). The required winding forces and number of binding layers for the magnet was determined, effectively improving spatial utilization and preventing shifts or quenching through elasticity theory. This method may also be applied broadly to the mechanical analysis and binding layer determination of other large-aperture, high-field superconducting magnets.