Research And Design Of Key Component TAIL On ITER PF6 Magnet

International Thermonuclear Experimental Reactor (ITER) is an international cooperation project, whose purpose is to demonstrate an experimental self-combustibility Tokamak device. Poloidal superconducting magnetic field system is made of 6 coils. TAIL is the key component of PF6 coil. TAIL’S function is to transfer load and strengthen the double pancake termination’s intensity.The main research work of the paper is show as follows:1. The structural design of TAIL is completed. The materials of each part is confirmed. Furthermore, the standard of stress check is confirmed.2. By means of finite element method (FEM), the electromagnetic forces on poloidal magnet PF6 at different plasma scenarios were calculated to confirm the maximum electromagnetic loads. The electromagnetic loads will be used for the structural analysis next.3. Using the electromagnetic results above, the stress and deformation of the key component of poloidal magnet PF6-TAIL were calculated under different working conditions. After the analysis of different working conditions, the largest impact of the load is confirmed after comparison of different loads. The results show that the proposed structure of TAIL is properly designed. The structure can withstand all the electromagnetic, thermal and mechanical loads expected during operation.4. By means of tensile test under low temperature of breaker, which is the key part of TAIL, the ultimate tensile strength is obtained. Using the ultimate tensile strength under low temperature, stress check and comparison with FEA results are done. Fatigue test under low temperature is done because of the requirement of the CTS to confirm the mechanical reliability under cycle loading. Furthermore, the way of the welding is confirmed. The temperature control of the process of welding is analyzed to ensure the displacement is under control. The assembly problems is also concerned.