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U. Fischer a) , A. Konobeyev a) , Yu. Korovin b) , D. Leichtle a) , U. v. Möllendorff a) , P. Pereslavtsev a) , I. Schmuck a) , S. P. Simakov a) , P. P. H. Wilson c) a) Association FZK-Euratom, Forschungszentrum Karlsruhe
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U. Fischera), A. Konobeyeva), Yu. Korovinb), D. Leichtlea), U. v. Möllendorffa), P. Pereslavtseva), I. Schmucka), S. P. Simakova), P. P. H. Wilsonc) a)Association FZK-Euratom, Forschungszentrum Karlsruhe b) Institute for Nuclear Power Engineering (INPE), Obninsk, Russia c) University of Wisconsin, Madison, USA Review of IEAF-2001 Cross Section Data Libraries for IFMIF Activation and Transmutation Analyses IAEA TC Meeting, Karlsruhe, October 4-6, 2005
History Collaboration of Forschungszentrum Karlsruhe (FZK) and Institute for Nuclear Power Engineering (INPE), Obninsk 1997-1999: Activation data files for Z=6-84 target nuclides based on EAF-97 MeV data for E<20 MeV 2000: Data file completion with Z<6 nuclides; addition of MF=2 resonance parameter skeleton 2001: IEAF-2001 based on EAF-99 data for E<20 MeV, processing & first applications tests. 2002: Validation analyses, IFMIF applications 2003: IEAF-2001 group data library for FISPACT • IEAF-2001 Objective • Development of nuclear data base required for transmutation activation analyses of IFMIF D-Li neutron source (En > 20 MeV) and other intermediate energy applications (En<150 MeV) U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Pre-equilibrium nucleon emission Modified geometry dependent hybrid (GDH) model Pre-compound cluster (d, t, 3He, a) and g-ray emission Code ALICE/ASH (INPE Obninsk) New approach for light mass nuclei (Z6) based on diffraction theory A. Konobeyev et al., Nucl. Sci. Eng. 139, 1-23 (2001) Adoption of EAF-99 data below 20 MeV J.-Ch. Sublet, J. Kopecky, R. Forrest, European Activation File EAF-99, Report UKAEA FUS 408, 1998 Evaluation Methodology Yu. Korovin, A. Yu. Konobeyev, P.E. Pereslavtsev et al, Journ. Nucl. Sci. Techn., Suppl. 2, p. 68-71 (August 2002) U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Neutron energy range: 10-5 eV En150 MeV 679 target nuclides: Z=1 (hydrogen) to 84 (polonium) 134.000 reaction cross-sections Standard ENDF-6 data format MT=5 (n, anything) data representation Lumped MT=5 excitation function stored in MF=3 section Reaction product yield vectors in MF=6 section (LAW=0) MF=2 resonance parameter skeleton to enable processing with NJOY ENDF Data File Features U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
GENDF group data library G-IEAF-2001/XS-256 Generated with NJOY/GROUPR based on version 99.0 Modifications required GENDF data format (minor changes; ZAT) NJOY/GROUPR: Minor changes for processing of MT=5, MF=6 (LAW=0) Major changes for automated processing of all sub-sections 256 energy group structure 175 VITAMIN-J energy groups below 20 MeV 1 MeV energy bins for 20 En 50 MeV, 2 MeV bins above Flat weighting spectrum Data File Processing U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
For use with ALARA activation code Analytical and Laplacian Adaptive Radioactivity Analysis Next generation activation code developed at University of Wisconsin-Madison (P. Wilson) Capable of handling an arbitrary number of reaction channels (282 needed for IEAF-2001 !) Reactions defined entirely by the library (no fixed reaction tables) Cannot be used by standard activation codes FISPACT (UKAEA Culham), ANITA (ENEA), …. Use of fixed reaction tables Group Data Library G-IEAF-2001/XS-256 U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Required for standard activation codes: Convert MT=5 (MF3/MF6) data to nuclide production cross-section data (MF3) Non-standard MT numbers (181) ENEA Bologna, IEAF-2001 for ANITA code Assume MT=5 as pseudo fission reaction FZK, Karlsruhe, for FISPACT code G-IEAF-2001/PY-256 MT=5/MF=3: pseudo fission product cross-section No other cross-section MT=5/MF=6: pseudo fission product yields Calculated on the basis of G-IEAF-2001/XS-256 data Stored on MF=8 as independent fission product yield data (MT=454) Group Data Library G-IEAF-2001/PY-256 U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Group Data Library G-IEAF-2001/PY-256 Major FISPACT modifications U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Integral activation experiment in white neutron field produced by 40 MeV deuteron beam on thick Li-target ("IFMIF-like" neutron spectrum) SS-316 steel, F82H steel, V and V-4Ti-4Cr alloy samples U. v. Möllendorff et al, Report FZKA 6764, 2002 ALARA/G-IEAF-2001/XS-256 vs. experiment Testing/qualification of data Testing and Validation (1) ALARA-calculations using G-IEAF-2001/XS-256 data • Fusion activation benchmark: Irradiation of reduced activation steel Eurofer in first wall of Fusion Demo reactor • ALARA/G-IEAF-2001/XS-256 vs. FISPACT/EAF-99 • (E 20 MeV: IEAF-2001 = EAF-99) • Validation of procedure U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
ALARA/IEAF-2001 vs. FISPACT/EAF-99 FISPACT/EAF-99: dashed with symbols ALARA/IEAF-2001: straight lines U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
ALARA/IEAF-2001 vs. FISPACT/EAF-99 Eurofer activation in Demo first wall FISPACT/EAF-99: dashed with symbols ALARA/IEAF-2001: straight lines U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
ALARA/IEAF-2001 vs. Experiment SS-316 IFMIF activation experiment U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
ALARA/IEAF-2001 vs. Experiment U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
FISPACT/G-IEAF-2001/PY-256 vs. FISPACT/EAF-99 using 175 group data G-IEAF-2001 data cut-off at 20 MeV (E 20 MeV: IEAF-2001 = EAF-99) Different computational procedures and group data, identical underlying neutron cross-sections. Agreement pre-requisite for application > 20 MeV FISPACT/G-IEAF-2001/PY-256 vs. ALARA/G-IEAF-2001/XS-256 benchmark calculations Validation of new procedure for whole energy range Use of v. Möllendorff et al. IFMIF activation experiment on SS-316 steel as benchmark Testing and Validation (2) FISPACT-calculations using G-IEAF-2001/FP-256 data U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
FISPACT/G-IEAF-2001/PY vs. ALARA/IEAF-2001/XS SS-316 IFMIF activation benchmark U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
FISPACT/G-IEAF-2001/PY vs. ALARA/IEAF-2001/XS SS-316 IFMIF activation benchmark U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
IEAF-2001: complete cross-section data library for activation and transmutation analyses (En 150 MeV, 1 Z 84) Two different working libraries, G-IEAF-2001/XS-256 & G-IEAF-2001/PY for application calculations with different approaches for inventory calculations (ALARA-, FISPACT-code) Different approaches validated through series of benchmark calculations Testing and qualification of IEAF- data performed for SS-316, V/V-alloy, Eurofer, W samples in IFMIF activation experiments In routine use for applications to IFMIF neutron source Available through NEA Data Bank & RSICC (ENDF data file & G-IEAF-2001/256-XS) Summary U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Update, improvements & extension of IEAF-2001 ? Benchmark results: need for improvements/revisions En 20 MeV: Improved data (EAF-2003/JEFF-3.0 A) Improved model codes / methodologies (e. g. GNASH, TALYS) New experimental cross-section data Extension to higher energies En > 150 MeV ? ( spallation) Strategy for updating: Activation data library for neutron energies up to 1 GeV to include spallation transmutation productions En > 150 MeV: Intranuclear cascade models New evaluation in energy range 20 En 150 MeV (GNASH) En 20 MeV: Use of JEFF-3.0 Outlook U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005