Preliminary electromagnetic analysis of the COOL blanket for CFETR

Abstract The supercritical CO2 cOoled Lithium-Lead (COOL) blanket has been designed as one advanced blanket candidate for the Chinese Fusion Engineering Test Reactor (CFETR). This paper focuses on the electromagnetic (EM) loads (Maxwell force and Lorentz force) acting on the COOL blanket, which are important mechanical loads in further structural analysis of the COOL blanket. In this study, a 3D electromagnetic analysis is performed using ANSYS finite element method to obtain EM force on the COOL blanket. Firstly, the magnetic scalar potential (MSP) method is used to obtain the magnetic field distribution and the Maxwell force on the COOL blanket. Then, the magnetic vector potential (MVP) method is performed during a plasma disruption event to get the eddy current distribution. At last, a multi-step method is adopted for the calculation of the Lorentz force and the torque. The maximum Lorentz force of inboard and outboard blanket structural components is 4968kN and 1786kN respectively.