Preliminary Design and Verification of Divertor Module of CFETR System Code

A system code for integrated simulation and optimization is being developed for China Fusion Engineering Test Reactor (CFETR). The main function of CFETR system code is to achieve consistent physical objectives with achievable engineering parameters. As one of the most important works for tokamak, many aspects must be considered in the divertor design, such as high-heat loads removal, particle pumping, electromagnetic forces sustaining, remote handling compatibility, and so on. Inevitably, it is difficult to ensure all parameters are optimum due to the fact that some divertor parameters may be conflicting or highly interdependent. An underdeveloped divertor module code could address these issues. The purposes of developing such a module code are to explore key elements of the divertor system, simplify the design process, and determine the main engineering parameters by iteration of a self-consistent workflow. The divertor module code incorporates submodules with input and output ports, material and criterion databases, and simulation and optimization CAE tool-box, including CATIA, ANSYS, and OPTIMUS. This paper presents a typical design workflow for divertor module and a simplified simulation case to validate the feasibility of this workflow.