Development and Experimental Study of High-Temperature Superconducting Central Solenoid Model Magnet for Tokamak

High-temperature superconducting (HTS) magnet system is the key to achieving compact, high-performance, low cooling cost, and stable operation of Tokamak devices. In this work, a HTS central solenoid (CS) model magnet is successfully developed by using HTS YBCO tape. The structure and manufacturing process of the magnet are introduced in detail. The magnet’s pancake-to-pancake splice joints (inter-pancake joints) resistance are less than 10 nΩ. After optimizing the coil former based on simulation experimental results, the magnet’s eddy current loss can be reduced by 98%. The insulation between winding and the coil former can withstand a voltage of 5000 V. In addition, the experimental and simulation results indicate that the magnet has good performance and the manufacturing process is stable and reliable.