ELECTROMAGNETIC AND STRUCTURE ANALYSIS FOR EAST VACUUM VESSEL WITH PLASMA FACING COMPONENTS

摘要

EAST is a full superconducting tokamak equipped with actively cooled plasma facing components (PFCs). Plasma disruption and vertical displacement event (VDE) should be considered in the design of vacuum vessel due to the possibility of destroying EAST. In the past electromagnetic and structure analysis has been done for EAST vacuum vessel without considering the PFCs. However, some experimental results seem to indicate that, PFCs can be destroyed more easily than vacuum vessel. So it is very necessary and significant to analyse the electromagnetic loads due to plasma disruption and VDEs on the structure of the vacuum vessel with PFCs. In this paper, using the numerical method, the eddy current caused by plasma disruption and Halo current caused by VDE in the whole vacuum vessel with PFCs will be calculated, and on the basis structure analysis will be done with finite element method. According to the analysis results, Some advices to more effectively protect EAST vacuum vessel and PFCs from being destroyed in EM event is given out.