Abstract
China fusion engineering test reactor (CFETR), based on ITER technology and bridged between ITER and DEMO, has been supported by China government to start technologies R&D and engineering design. The field of CFETR at plasma core is 6.5 T, maximum field of TF coil is about 14.8 T. TF coil is wound by Nb3Sn and NbTi CIC conductors. Coil weight is about 650 tons with height about 21.7 m and width about 12.3 m. Prototype TF coil manufacture design consists of mechanical & electro-magnetic design and analysis, conductor design and analysis, coil AC loss analysis, thermal–hydraulic analysis and coil cooling, quench detection and coil protection, coil winding, case manufacture, and coil assembling. The TF prototype coil is one sub-task of the CRAFT project, which will last for 5 year and 8 months and is constructed by ASIPP and SWIP cooperatively. The preliminary design of the TF prototype coil has been finished at the present stage. In this paper, the basic design requirements of TF magnet are introduced firstly. Next, the preliminary design and analysis of the TF coil is described, which includes the winding package (WP) design, the coil case (CC), the conductor design and analysis, the electromagnetic, mechanical and AC losses analysis. Then the process and tooling design for the WP and CC manufacturing and assembling is presented. Finally, a summary and a plan are given.
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