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ITER Computational Shield Benchmark

Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft. EFF-DOC-975. ITER Computational Shield Benchmark. U. Fischer, A. Serikov Association FZK-Euratom Forschungszentrum Karlsruhe.

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ITER Computational Shield Benchmark

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  1. Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft EFF-DOC-975 ITER Computational Shield Benchmark U. Fischer, A. Serikov Association FZK-Euratom Forschungszentrum Karlsruhe IAEA TM on Nuclear Data Library for Advanced Systems – Fusion Devices. Vienna, October 31 – November 2, 2007

  2. Background • FENDL-2.1 • Revision to FENDL-2.0 (1995/96) • Compiled November 2003, see report INDC(NDS)-451 • Working libraries prepared by IAEA/NDS, see INDC(NDS)-467 (2004) • New reference data library for ITER neutronics calculations • ITER nuclear analyses service – enabling activities (CAD – MCNP benchmark) • QA specification document for ITER neutronic analyses • Need for • Qualification  benchmark analyses • Validation  fusion benchmark experiments • Start with computational benchmark typical for ITER applications U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  3. ITER Computational Shield Benchmark • ITER 1D blanket/shield/VV/TF-coil configuration • Set up as part of the FENDL-1 benchmarking efforts Reference: M. Sawan, FENDL Neutronics Benchmark: Specifications for the calculational and shielding benchmark, INDC(NDS)-316, December 1994 • Applied for benchmarking of FENDL-1.0 multigroup data against ENDF/B-V data using ONEDANT discrete ordinates code Reference: M. Sawan, Results of the neutronics and shielding calculational benchmark, IAEA Advisory Group Meeting on Completion of FENDL-1, Del Mar, CA, December 5-9, 1995 • Suitable computational benchmark for ITER neutronics calculations • Benchmarking of FENDL-2.1 vs. FENDL-2.0 and –1.0 (MC data) • No benchmark results available for FENDL-1.0/2.0 MC data • Need to re-run benchmark for those data too! U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  4. FENDL Data Evaluations U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  5. FENDL-2.1 Original Data Sources U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  6. ITER Computational Shield Benchmark Vertical cross-section Horizontal cross-section U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  7. ITER Computational Shield Benchmark Inboard radial build U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  8. Total neutron fluxes U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  9. Total neutron flux profile (FENDL-2.1) U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  10. Total neutron flux profiles: FENDL-2.1 vs. 2.0 Relative difference (F2.1 – F2.0)/F2.1  100 U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  11. Neutron flux spectra: FENDL-2.1 vs. 2.0 Relative difference (F2.1 – F2.0)/F2.1 U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  12. Total photon flux profiles: FENDL-2.1 vs. 2.0 Relative difference (F2.1 – F2.0)/F2.1 U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  13. Outboard nuclear heating profile: FENDL-2.1 vs. 2.0 Relative difference (F2.1 – F2.0)/F2.1 U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  14. Helium production in SS-316 (FENDL-2.1) Total and elemental decomposition Ni U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  15. Helium production in SS-316: FENDL-2.1 vs. 2.0 Relative differences (F2.1 – F2.0)/F2.1 Ni U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  16. Helium production cross-sections of Fe FENDL-2.0 vs. 2.1 FENDL-2.0 FENDL-2.1 U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  17. Hydrogen production in SS-316: FENDL-2.0 vs. 2.1 Relative differences (F2.1 – F2.0)/F2.1 U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  18. Hydrogen production cross-sections of Fe FENDL-2.1 vs. 2.0 FENDL-2.1 FENDL-2.0 (total) U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  19. Hydrogen production cross-sections of Fe FENDL-2.0: total vs. partials (n,p) total (n,n’p) U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

  20. Conclusions • FENDL-2.1 vs. 2.0 • No significant differences of calculated neutron fluxes except for region of TF coil (deep penetration) where FENDL-2.1 results are 10-12 % higher. • Similar trend is observed for photon fluxes and nuclear heating. • Significant discrepancies found for He and H production data • FENDL-2.0 total gas production cross-sections not reliable, use partials • FENDL-2.1 total gas production cross-sections consistent with partials • Differences in He production data severe, indication of deficient cross-sections in FENDL-2.0 • Differences in hydrogen production correspond to differences in neutron fluxes (using partial production cross-sections) • Experimental validation of gas production data required ! U. Fischer, A. Serikov, ITER computational shield benchmark - IAEA TM, Vienna, October 31- November 2, 2007

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