Electromagnetic studies of effects produced by disruption events inside ITER European diagnostic port plugs

Abstract The ITER tokamak is an experimental system under construction with aim to reach a positive energy ratio. It includes an important number of diagnostic equipment built together in 3 series of ports (upper, equatorial, lower) for understanding of physics and reliable operations. The study of electromagnetic effects is crucial as the eddy currents produced by the magnetic flux transients induced by plasma disruptions, magnet fast discharge and plasma control actions, interact with the magnetic field and produce strong forces and moments on the Port systems. They need to be assessed to evaluate the structural integrity and fatigue of components and the results of such studies are normally a strong design driver. The article present the modifications done on the methodology of electromagnetic studies and the latest results, in the form of total Lorentz Forces and Moments as function of the time in two representative diagnostic ports (upper and equatorial).