Structural analysis of a superconducting central solenoid for the Tokamak Physics Experiment

摘要

The Tokamak Physics Experiment (TPX) concept design uses superconducting coils to accomplish magnetic confinement. The central solenoid (CS) magnet is divided vertically into 8 equal segments which are powered independently. The eddy current heating from the pulsed operation is too high for a case type construction; therefore, a (open quotes)no case(close quotes) design has been chosen. This (open quotes)no case(close quotes) design uses the conductor conduit as the primary structure and the electrical insulation as a structural adhesive. This electrical insulation is the (open quotes)weak link(close quotes) in the coil winding pack structure and needs to be modeled in detail. A global finite element model with smeared winding pack properties was used to study the CS magnet structural behavior. The structural analysis results and peak stresses will be presented.