Evaluation of gamma heating for "Joyo" MK-II core

Watari, Yoshio*; not registered; not registered

The Analysis on the Gamma heating of the 0'th cycle of "Joyo" MK-II Core has been performed. In advance of this analysis, the followings have been performed. (1)The Cross Sections for the Gamma heating analysis have been prepared based on JENDL-IIB-70 and the second Gamma production data which was made from ENDF-B/IV. These Cross Sections include the Neutron Cross Section, the second Gamma production Cross Section and the Gamma transport cross section. The number of the energy groups is 7 for the Neutron, and 20 for the Gamma ray. (2)The analysis on the experiment of the Gamma heating in the FCA X-2. This FCA X-2 is the mock-up of the "Joyo" MK-II core. The analysis has been performed based on the RZ-geometry and the XY-geometry. The Gamma source was calculated with the Neutron Diffusion theory and the Gamma transport calculation was performed with SN-Code(PS).