Multiphysics engineering analysis for high field side reflectometry

Highlights: • Global model for electromagnetic analysis of HFS-R developed. • Results of multiphysics simulations for HFS-R presented and discussed. • MD-UP-lin36 found to be most dangerous disruption scenario of HFS-R. • Vertical waveguide sections and 90°-bend found to be the most loaded parts of HFS-R. • Thermal stresses remain too high and indicate necessity of design modification. - Abstract: The High Field Side Reflectometry (HFS-R) is diagnostic equipment subjected to the conditions that are severe even for ITER and make development of the appropriate design challenging: magnetic field over 9T, highly non-uniform temperature field with temperatures up to 700 °C, long in-vessel waveguides. A special global electromagnetic finite element model for performing poloidal field variation, toroidal field variation and halo current analyses for HFS-R was developed. The most dangerous for the equipment loads were identified by performing electromagnetic, thermal and stress analyses. Results indicate that current design of the HFS-R in-vessel elements withstands the possible electromagnetic loads, but thermal stresses above the allowable indicate the necessity of further design modifications and elaboration of computational approach for thermal analysis.