RADIATION IN PLASMA TARGET INTERACTION EVENTS TYPICAL FOR ITER TOKAMAK DISRUPTIONS

Plasma wall interactions under conditions simulating ITER hard disrupt ions and ELMs are studied at the plasma gun facilities 2MK-200 CUSP an d MK-200 UG at Troitsk. The experimental data for carbon plasma shield s are used for validation of the theoretical modeling of the plasma wa ll interaction. The important features of the non-LTE plasma shield su ch as temperature and density distribution, its evolution and the conv ersion efficiency of the energy of the plasma stream into total and so ft x-ray radiation from highly ionized evaporated target material and the energy balance are reproduced quite well. Thus a realistic modelli ng of ITER disruptive plasma wall interaction using the validated mode ls is now possible.