Low-Activation Reinforced Concrete Design Methodology (2) - Multi-group X-Sec. Library for Precise Activation Analysis -

摘要

Precise estimation method for residual radioactivity and decommissioning cost is indispensable to decide adoption of low-activation material. For this precise estimation, both accurate estimation of thermal neutron flux and accurate activation cross section of structural material is necessary. In this paper, we show new cross section library that has multi-group structure in thermal energy. These libraries are processed from evaluated cross section library JENDL 3.3 by using NJYOY 99.83. Cross section library for S_N transport calculation and activation calculation are prepared. These libraries are tested by JPDR experiment, and found to give better result than single thermal group treatment.