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KAERI / NDELKAERI / NDEL1st RCM FENDL-3 CRP IAEA Dec 2-6
Nuclear Data Evaluation Activities in KAERI
Hyeong Il Kim*
Nuclear Data Evaluation Lab.,Korea Atomic Energy Research Institute
*E-mail: [email protected]
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Table of Contents
Introduction
Evaluation Procedure Extension of EMPIRE-II ECISPLOT
Benchmark tests for FENDL-2.1
Recent Evaluation Results Neutron induced reactions (W) Charged particle induced reactions (Al)
Summary and Further Works
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Introduction
Nuclear Data Evaluation Lab. (NDEL) Staffs (8+1)
Evaluation (4), Processing & Benchmark (4), and Secretary (1)
Recent achievements Evaluation (contributed to ENDF/B-VII.0)
32 FPs collaborated with BNL 124 Photonuclear Evaluations ( IAEA-CRP)
Processing (contributed to NEA/DB) MATXS-format 150-group neutron libraries for fast reactors:
KAFAX-E70 (ENDF/B-VII.0), KAFAX-F31 (JEFF-3.1), and KAFAX-J33 (JENDL-3.3),
Benchmark Integral tests for ENDF/B-VII.0, JEFF-3.1, JENDL-3.3 and so on. Al, Fe, Ni, Si, and W (FENDL-2.1)
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Cont’d
Recent Activities related with FENDL Library Motivated by our benchmark results for FENDL-2.1
Oktavian (Al, Si, Ni, Fe, W) FNS, Criticality benchmark (W)
New 182,183,184,186W evaluations up to 20 MeV (EMPIRE-II) Individual channels were in good agreements with
measurements. Integral measurements are reproduced well. They are being extended to 150 MeV including the
covariance files. d- and p- induced reactions for 27Al (Talys)
In addition, doing the evaluations for n-, d-, and p- induced reactions on Si, Ni and Fe
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Evaluation Procedure
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Evaluation, Processing and Benchmark
Nuclear Reaction codes EMPIRE-II (Neutron), TALYS (Charged Particles) Initial Input data taken from RIPL-II ( next RIPL-III) OMP optimized by ECISPLOT Nuclear models by comparison with measurements
Evaluation Check Not only individual channels but also the Integral tests Almost no manual works to produce the ENDF-6 formatted
files except the complaints by checking codes from time to time
Extension of EMPIRE to resonance module in collaboration with BNL
Processing (Njoy-99.161) Benchmark (MCNPX-2.5.0)
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Determination of covariances: Uncertainties compiled in the Atlas used as a basis Missing uncertainties are estimated Correlations between resonance parameters can be introduced Ensuring consistency between uncertainties assigned to parameters for the first few
resonances and experimental uncertainties for the thermal cross sections
The resonance module: Reads data from the electronic version of the Atlas Makes statistically justified guesses for unknown parameters Uses average resonance properties to construct unresolved resonance region Allows manual adjustment of parameters, their uncertainties, energy ranges,
average quantities Creates ENDF-6 files MF = 2 and MF = 32
EMPIRE-II Resonance module with Covariance
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Graphical User Interface (GUI)
Extension of EMPIRE-II (cont’d )
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Extension of EMPIRE-II (cont’d )
Graphical analysis of resonance energies - helps to determine the upper boundary of the resolved resonance region.
Plot of the Porter-Thomas distribution - helps to determine the average resonance parameters such as a level spacing and neutron strength functions for s- and p-waves.
Comparison of cross sections with experimental data and ENDF/B-VII.0 for Total cross sections
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ECISPLOT
Fitting or searching OMP parameters using the results of ECIS cal.
Automatic Fit: Simulated Annealing (SA) Manual Fit Reads C4 formatted files for experimental data Reads and writes the RIPL-2 format for OMP
Directly used as inputs of EMPIRE and TALYS
Being still developed Fast for spherical OMP but slow for CC OMP
Going to Parallel computing
Available new formula
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Benchmark tests for FENDL-2.1
< Distribution of materials by original source of evaluation in FENDL-2.1 >< Distribution of materials by original source of evaluation in FENDL-2.1 >
Material Library
22H, H, 33H, H, 44He, He, 66Li, Li, 77Li, Li, 99Be, Be, 1010B, B, 1111B, B, 1616O, O, 1919F, F, 28-3028-30SiSi, , 3131P, S, P, S, 35,3735,37Cl, K, Cl, K, 50,52-5450,52-54Cr, Cr, 54,57,5854,57,58FeFe, , 5959Co, Co, 61,62,6461,62,64NiNi, , 63,6563,65Cu, Cu, 9797Au, Au, 206-208206-208Pb, Pb, 209209Bi, Bi, 182-182-
184,186184,186WW
ENDF/B-VI.8ENDF/B-VI.8
11H, H, 33He, He, 2323Na, Na, 46-5046-50Ti, Ti, 5555Mn, Mn, 92,94-98,10092,94-98,100Mo, Mo, 181181Ta, VTa, V JENDL-3.3JENDL-3.3
Mg, Ca, GaMg, Ca, Ga JENDL-3.2JENDL-3.2
1212C, C, 1414N, Zr, N, Zr, 9393NbNb JENDL-FFJENDL-FF
2727AlAl, , 5656FeFe, , 5858NiNi, , 6060NiNi JEFF-3.0 (EFF)JEFF-3.0 (EFF)
1515N, SnN, Sn BROND-2.1BROND-2.1
Oktavian
Pulsed sphere experiments for neutron and gamma-ray leakage spectra at the D-T neutron source facility of Osaka University
Benchmarks for Ni, Fe, Al, Si, and W spheres taken from SINBAD
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Gamma leakage spectrum (Al)
100 10110-4
10-3
10-2
10-1
100
L
ea
kag
e S
pe
ctru
m (
/Me
V/S
ou
rce
)
Energy (MeV)
OKTAVIAN-Al (Gamma) ENDF/B-VII.0 JEFF-3.1 JENDL-3.3 FENDL-2.1 Gamma Measurement
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Gamma leakage spectrum (Si)
0 1 2 3 4 5 6 7 8 9 1010-3
10-2
10-1
100
L
ea
kag
e S
pe
ctru
m (
/Me
V/S
ou
rce
)
Energy (MeV)
OKTAVIAN-Si (Gamma) ENDF/B-VII.0 JEFF-3.1 JENDL-3.3 FENDL-2.1 Gamma Measurement
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Neutron leakage spectrum (Ni)
0 2 4 6 8 10 12 14 1610-3
10-2
10-1
100
L
ea
kag
e S
pe
ctru
m (
/Me
V/S
ou
rce
)
Energy (MeV)
OKTAVIAN-Ni ENDF/B-VII.0 JEFF-3.1 JENDL-3.3 FENDL-2.1 High Energy Measurement
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Neutron leakage spectrum (W)
10-1 100 10110-2
10-1
100
101
L
ea
kag
e S
pe
ctru
m (
/leth
arg
y/S
ou
rce
)
Energy (MeV)
OKTAVIAN-W (Neutron) ENDF/B-VII.0 JEFF-3.1 JENDL-3.3 FENDL-2.1 Neutron Measurement
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Tungsten Evaluation
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Capture cross sections
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(n,2n) cross sections
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Neutron Production
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Oktavian
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FNS
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Criticality Benchmark
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Charged particle induced reactions
d-, p- and a- induced reactions TALYS-0.72 (=>TALYS-1.0) Incident energy: up to 150 MeV Modified OMP
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Proton Induced Reactions
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Production cross sections induced by proton
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Residual Cross Sections induced by Proton
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Deuteron Induced Reactions
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Alpha induced reactions
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Summary and Further works
Summary Evaluation based on EMPIRE-II, TALYS, ECISPLOT codes Performed Benchmark tests for 5 materials in the FENDL-2.1
library. Completed evaluations on four tungsten isotopes up to 20 MeV
and extending 150 MeV including covariance files. Calculated p-, d-, and a- induced reactions for 27Al.
Further works Short term: Evaluations for n-, d-, p- induced reactions on Al, Si,
Ni, and Fe Long Term: Pre-emptive improvement of nuclear data for future
nuclear R&D applications