Comparison between experimental and numerical determination of neutron-induced activation in low-activation materials

Mario Pillon; M. Angelone; C. Arpesella; R. A. Forrest; J.-Ch. Sublet

doi:10.1117/12.267858

27 February 1997 Comparison between experimental and numerical determination of neutron-induced activation in low-activation materials

Mario Pillon, M. Angelone, C. Arpesella, R. A. Forrest, J.-Ch. Sublet

Author Affiliations +

Proceedings Volume 2867, International Conference Neutrons in Research and Industry; (1997) https://doi.org/10.1117/12.267858
Event: Fifth International Conference on Applications of Nuclear Techniques: Neutrons in Research and Industry, 1996, Crete, Greece

Abstract

The need for studies of the activation of materials in the neutron fluxes encountered in D-T fusion devices has long been recognized as a key area of fusion technology programs. In this paper a comparison between experimental and numerical results of the induced radioactivity in a low activation material, the SiC/SiC fiber ceramic composite, is presented. The SiC/SiC fiber ceramic composite is a candidate material for the DEMO phase of a commercial fusion power station. This material was exposed to the neutron flux produced by a D-T neutron generator and the induced activity was carefully measured using the Low Background Counting Facility in the Gran Sasso laboratory. The neutron flux and spectra at the irradiation position have been determined using foil activation and numerical calculations with the Monte Carlo Code MCNP. These quantities have been used as input values for the activation code FISPACT and the cross section library EAF 4.1, to calculate the induced activity. The material composition and its impurities have been taken from existing data. The results of the comparison are discussed, focusing on the validation of the cross sections and the activity coming from the impurities.

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Mario Pillon, M. Angelone, C. Arpesella, R. A. Forrest, and J.-Ch. Sublet "Comparison between experimental and numerical determination of neutron-induced activation in low-activation materials", Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); https://doi.org/10.1117/12.267858

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