Electromagnetic loads and magnetoelastic stability of the in-vessel poloidal field coils of the T-15 upgrade

Abstract

Electromagnetic forces and possible magnetoelastic buckling caused by interaction with the toroidal magnetic field are analysed for the in-vessel poloidal field coils of the tokamak T-15 upgrade. Analytical expressions for the forces and critical currents have been derived. The analysis shows that the stiffness of the in-vessel coils provides the stability of the coils with sufficient safety margins.