Riccardo Roccella, from the ITER Organization, will present the following two talks from 2-3 PM on Friday, July 14, in room 214 Mudd.
1. ITER Procedures for Electromagnetic Analyses
Very high mechanical loads act on the ITER vacuum vessel and in-vessel components during electromagnetic (EM) transients (mainly plasma disruptions) because of the interaction between the currents induced in the conducting structures by those EM transients and the external high magnetic fields, typical of the tokamak operations. For the design of many ITER components the EM loads are the most challenging and thus great care must be taken in their assessment. While the plasma disruptions are mainly simulated (based on extrapolations of measurements done in existing tokamaks) by means of 2D axis-symmetric codes the load assessment on the structures is usually carried out with 3D FE analyses. The accuracy of the method used to interface the plasma simulation and FE codes has been proven critical for the reliability of the EM analysis results.
This talk will give an overview of the procedures used to interface the plasma simulation and finite element codes and to assess mechanical loads caused by poloidal field variation, toroidal field variation and halo currents associated with plasma disruptions, on tokamak structures.
