Open Access
ND 2007
Article Number 261
Number of page(s) 4
Section Fusion applications
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07403

Monte Carlo analyses of blanket neutronics experiments at FNS with latest nuclear data libraries

S. Sato1, K. Ochiai1, M. Wada2, M. Yamauchi1, H. Iida1, T. Nishitani3 and C. Konno1

1  Japan Atomic Energy Agency, Tokai 319-1195, Japan
2  Japan Computer System, Mito 310-0805, Japan
3  Japan Atomic Energy Agency, Naka 311-0193, Japan

Published online: 21 May 2008

A series of neutronics experiments with mockups relevant to solid breeder water cooled blanket at FNS/JAEA have been analyzed with MCNP-4C, FENDL-2.1 and JENDL-3.3. Divergences of calculation results to experimental ones (C/Es) on tritium production rates (TPRs) from unity increase in the experiment with a neutron reflector made of SS316. These also increase at boundary between the breeder and beryllium layers. This suggests that there are some problems in back-scattering cross section data of nuclei included in SS316 and beryllium. The divergence can be improved by installation of water at this boundary. The C/Es on integrated TPRs are within 7% in experiments without a reflector.

© CEA 2008