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(ITERP2/03) ITER Relevant Neutronics Experiments at FNS

Y. Ikeda¹, C. Konno², F. Maekawa², Y. Kasugai¹, Y. Uno², M. Wada² and H. Takeuchi²

¹ Center for Neutron Science,² Department of Materials Science;
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-1195 Japan

Abstract.  Under the ITER R&D Task framework, a series of experimental measurements and analyses have been conducted at Fusion Neutronics Source (FNS) Facility at JAERI, on various neutronics issues addressed from the critical nuclear design of ITER. The experiments comprised items of (1) bulk shielding of the ITER shield blanket configuration including the superconducting magnet layer, (2) streaming effects simulating a gap in two adjacent blanket modules, and (3) nuclear heating and induced radioactivity. Overall validity of design calculation, consequently, is assured in most cases by the C/E values. This paper deals with an overview of neutronics work at FNS/JAERI.

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