Abstract
Thermal radiation analysis of the DEMO tokamak based on the 2015 baseline CAD design model was performed. For the purpose of analysis, Vacuum Vessel Thermal Shield (VVTS) and Cryostat Thermal Shield (CTS) were designed on a conceptual level to complement the baseline DEMO CAD model. The Finite Element (FE) code ABAQUS was used to perform numerical analyses. A special care was taken to adapt the geometry and mesh of the FE model to reduce the heat transfer error to an acceptable level. Thermal loading on DEMO components and refrigeration power for the base case scenario with actively cooled thermal shields was determined. Besides the base case, the sensitivity analysis with passive CTS was performed.
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