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Measurement of Reaction Rate Distribution in Partial Mockups for the ITER TBM with DT Neutrons

S. Sato et al.

Fusion Science and Technology / Volume 56 / Number 1 / July 2009 / Pages 227-231

Tritium, Safety, and Environment / Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 1) /

In the previous studies, the calculated TPRs were overestimated by more than 10 % compared with the measured values in the experiment with a neutron source reflector. In order to confirm that these overestimation are found on other reactions, reaction rate distributions are measured on 197Au(n,)198Au and 93Nb(n,2n)92mNb in the ITER TBM mockups with and without a reflector by the activation foil method with DT neutron irradiation experiments. Analyses are performed with MCNP-4C and FENDL-2.1. The ratios of the calculation results to the experimental ones with a reflector are slightly larger than those without a reflector on the reaction rate of 197Au(n,)198Au.

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