3D electromagnetic analyses during plasma disruption for the Tore Supra lower hybrid passive active multi-junction launcher

A Passive Active Multijunction (PAM) Lower Hybrid heating and Current Drive (LHCD) antenna has been installed on Tore Supra in 2009. The design and the fabrication of this antenna based on the passive-active multijunction concept is a major part of the CIMES project (components for the injection of mater and energy in steady-state) on Tore Supra. The antenna made of copper and stainless steel has to withstand important electromagnetic forces due to eddy currents during plasma disruption. 3D electromagnetic analyses have been performed with the ANSYS code to calculate the eddy currents and the electromagnetic forces.