Evaluation of electromagnetic forces on Chinese Dual Functional Lithium Lead Test Blanket Module in ITER

The Dual Functional Lithium Lead (DFLL) TBM (Test Blanket Module) concept, using the RAFM steel as structural material, was proposed by Chinese Party as one alternative option of two main blanket concepts for testing in ITER. Because electromagnetic load is one of the main concerns for the ITER in-vessel components, the electromagnetic analysis of DFLL-TBM was implemented using ANSYS code. For transient electromagnetic analysis with the latest disruption scenarios, the complex FEM model was developed including the vacuum vessel, shielding blanket, equatorial port, and divertor of ITER. The goal of this analysis was principally to investigate the eddy current and quantify electromagnetic force on DFLL-TBM at plasma disruption; the peak value of Lorentz force reached 170 kN. Furthermore, the static electromagnetic analysis was carried out with the reference operation scenario II, the magnetization forces on DFLL-TBM due to magnetization were investigated. By the mechanical analysis, the results show the DFLL-TBM can accommodate the calculated loads.