Speaker
Description
As a preparation towards the final fabrication of China Fusion Engineering Test Reactor (CFETR) central solenoid coil, the Central Solenoid Model Coil (CSMC) is designed in advance. In order to save the manufacturing cost, the hybrid superconducting magnet is adopted. The coil is comprised of five magnet modules, namely the inner and outer Nb3Sn coils, the top, medium and bottom NbTi coils. Once CSMC is energized, huge electromagnetic force is generated, which will result in the misalignment of the coil modules. To maintain the integrity of CSMC, the pre-compression load should be applied. While the pre-compression load is affected by the thermal contraction load and electromagnetic force. Different preload application schemes are compared and the variation of preload under different load cases are analyzed in the paper, which are helpful to obtain the optimized pre-compression method.
