JAEA-Conf 2011-002 - 日本原子力研究開発機構

JAEA-Conf 2011-002
2. Personal Perspective of Strategy on Nuclear Data Activities at JAEA
Tokio FUKAHORI
Nuclear Data Center, Nuclear Science and Engineering Directorate,
Japan Atomic Energy Agency
Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195 Japan
fukahori.tokio@jaea.go.jp
1. Introduction
The latest general purpose file of Japanese Evaluated Nuclear Data Library (JENDL)
has been released as JENDL-4 in 2010. The statistics of JENDL-4 is illustrated in Table 1
comparing with the latest versions of the major general purpose evaluated nuclear data files,
ENDF/B-VII.0 and JEFF-3.1.1. JENDL-4 was the one of the goals of the first period
mid-term research plan for Japan Atomic Energy Agency (JAEA) and the main target of
JENDL revision in this time was minor actinide (MA) and fission product (FP) nuclides.
The second period of mid-term research plan has started since 2010FY. In the plan, the
objective is “incident energy expansion of JENDL”.
The above objective can be achieved by producing special purpose files (JENDL
Intermediate Energy Nuclear Data Files) as JENDL High Energy File (JENDL/HE), JENDL
Photonuclear Data File (JENDL/PD), JENDL PKA/KERMA File (JENDL/PK), and so on.
Those files are applicable for accelerator related applications such as an accelerator-driven
nuclear waste transmutation system (ADS), International Fusion Material Irradiation Facility
(IFMIF), radiation therapies, and accelerator-driven BNCT. For this purpose, the nuclear
model code, CCONE which has been mainly used in the JENDL-4 evaluation, is planned to
be improved by adding some models to expand the incident energy region.
On the other hand, we never forget that the main user of nuclear data is nuclear
energy application, such as the fast breeder reactors (FBR, ex. “Monju”), the next generation
light water reactors (NGLWR), and the innovative reactors (ex. Generation IV). Recently
the importance is reported for the safety research of down-stream applications, which are
related to the (spent) fuel transportation, reprocessing, waste management, etc. Nuclear
security and nuclear forensics for nuclear non-proliferations are also new topics.
In this paper, personal perspective according to the assumption described above is
reported. Nuclear data needs and future nuclear data activities not only for JAEA and also
the others are considered.
2. Nuclear Data Needs
2.1 Fission and Fusion Reactor Developments
The main user of nuclear data is the energy applications, such as research and
developments for FBR, NGLWR, Innovative Reactors and Fusion Reactors. The NGLWR
concept is summarized in Table 2. For these requirements, higher burn-up calculation and
material science investigation are needed. For these applications, rather common nuclear
data are necessary for the burn-up calculations for inventory estimation as reactor physics,
PKA and/or DPA calculation for material science with radiation damage, and activation
library for clearances. Those nuclear data should be produced and merged into JENDL
general purpose file as the next version or revision of JENDL-4.