2009 KNS-AESJ Joint Session of Reactor Physics and Nuclear Data
The reactor physics and the nuclear datatechnical divisions of AESJ
“2009 KNS-AESJ Joint session of Reactor Physics and Nuclear Data” wasexecuted jointly with the reactor physics and the nuclear data technicaldivisions of Korea and Japan on Wednesday, March 25, 2009 in the 2009 annual
meeting (Tokyo Institute of Technology) of the Atomic Energy Society ofJapan.
Program;
12：30～14：30 at K hallReactor Physics•

Chairperson: Tetsuo MATSUMURA (CRIEPI)Current status of Accelerator-Driven System (ADS) in Kyoto University CriticalAssembly (KUCA)•(KURRI) Cheolho Pyeon

Status of Direct Whole Core Transport Calculation by DeCART(SNU) Han Gyu JOO•Lumped CMR Scheme for VHTR Core Calculations(KAERI) Jin Young CHO

Nuclear Data

Chairperson: Masayuki IGASHIRA （Tokyo Institute of Technology）•Present Status of JENDL-4(JAEA) Keiichi SHIBATA•Nuclear Data Evaluation for the Next Generation Nuclear Systems(KAERI) Young Ouk LEE

Discussion about cooperation of Korea-Japan
Chairperson:

Tetsuo MATSUMURA (CRIEPI) andMasayuki IGASHIRA （Tokyo Institute of Technology）

Contents;
1. Reactor physics
Dr. C. Pyeon (KURRI) reported that thecommission of ADS was achieved for thefirst time in KURRI (Kyoto University
Research Reactor Institute) on March 4,
2009. Protons of 100MeV accelerated by

the FFAG(Fixed Field Alternating Gradient) were transported andinjected into the tungsten target equipped in A-assembly of KUCA, andspallation reactions were induced, then ADS system were initiated by
the spallation neutrons. He introduced that KURRI will continue theadjustment of the proton accelerator, and accumulate the testing dataof the ADS system.

Professor Dr. Han Gyu JOO (Seoul National Universities) introduced theDeCART code that enables to analyze three
dimensional whole core with transport
calculation. The DeCART code ischaracterized with nodal SP3 axial solver
and double heterogeneity handlingcapability of the high-temperature gas
reactor. The procedures for the VHTR
reactor core calculation were introduced.

Dr. J Y CHO (KAERI) presented theanalytical result of the VHTR reactor corewith the DeCART code. Due to large He gas
hall of the VHTR reactor core for thecontrol rod insertion, the new scheme(LCMR) was introduced to calculationconvergence. Three kinds of benchmark
problems were analyzed, and an excellent
analytical performance was shown.

2.Nuclear Data
Dr. K. Shibata (JAEA) presented thedevelopment status of JENDL-4. In JENDL-4,improvements are especially performed on
the nuclear data of FP and MA nuclides andwill be released by the end of Japanesefiscal year 2009. For the actinide nuclides, the special file
(JENDL/AC-2008) including 79 nuclides has already been released, andexcellent results were obtained with the benchmark analyses of the fastreactor. It was reported that the resolved resonance parameters of 122 FP
nuclides were reviewed and had been evaluated.

Dr. Y O LEE (KAERI) presented the outline of
the nuclear data evaluation research inSouth Korea. Developments of the nuclear
data evaluation tool and evaluation study
were advanced to contribute to nuclear data
file such as ENDF/B-VII internationally.

3. Discussion about cooperation of Korea-Japan

Finally, the chairpersons instituted the subjects about the action policy
and development strategy on relation of Korea-Japan in the future, basedon details of current Korea-Japan relation on the reactor physics and thenuclear data research. It was confirmed that discussing should be continued
in the future.
In the frame of the session of AESJ annual meeting program in two hours,
five technical presentations of Korea and Japan were carried out. However,
the time for the discussion was not enough. It is concluded that the roleof the beginning of the cooperation between Korea-Japan on the reactor
physics and the nuclear data research was achieved in this joint session.