M. Frisoni

Neutron irradiation effects on the ITER-EDA and ITER-RC first wall/blanket materials

Safety relevant effects of neutron irradiation (material activation, decay heat, radiation damage, heat deposition and gas production) on the in-vessel components materials of the ITER-EDA and the preliminary European ITER-RC designs are assessed. The integrated radiation transport and activation methodological approach based on the calculation sequence Vitamin(ENEA)-Scale-ANITA has been used. The first wall and shield blanket are water cooled and the structural material is AISI 316LN with Be as a protective layer material.

ITER divertor tungsten dusts activation characteristics: impact of the neutron spectra and activation libraries

The paper presents an assessment aimed to point out the impact of the neutron spectra and the activation libraries on the relevant tungsten activation characteristics (the specific activity and the decay heat). The analyses refer to the ITER divertor dome and they are based on the ITER Basic Performance Phase. The dome protective material is a 10 mm thick tungsten layer, the heat sink is Glidcop (water cooled). The dome support and the cassette body are in AISI 316LN (water cooled). The integrated radiation transport and activation methodological approach Vitamin-Scale-Anita has been applied, that includes the self-shielding treatment.