1 / 20

ITER Computational Shield Benchmark

This document provides an overview of the ITER Computational Shield Benchmark conducted from October 31 to November 2, 2007, during the IAEA Technical Meeting in Vienna. The benchmark assesses the performance of the revised nuclear data library, FENDL-2.1, against its predecessor, FENDL-2.0. The analysis includes neutron and photon fluxes, helium and hydrogen production in stainless steel, and validation of computational methodologies for ITER applications. The results highlight marginal differences in calculated neutron fluxes, particularly in deep penetration areas of the TF coil.

chione
Télécharger la présentation

ITER Computational Shield Benchmark

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related