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Review of IEAF-2001 Cross Section Data Libraries for IFMIF Activation and Transmutation Analyses

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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Review of IEAF-2001 Cross Section Data Libraries for IFMIF Activation and Transmutation Analyses

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  1. 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

  2. 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

  3. 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 (Z6) 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

  4. Neutron energy range: 10-5 eV  En150 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. ALARA/IEAF-2001 vs. Experiment U. Fischer, Review IEAF-2001 Data Libraries IAEA TC Meeting, Karlsruhe, October 4-6, 2005

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

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