Methods and approaches to provide feedback from nuclear and covariance data adjustment for improvement of nuclear data files

SG39 meeting, November 2014

This is the third formal Subgroup meeting held at the NEA, Issy-les-Moulineaux, France, 27-28 November 2014

Agenda

Summary record

List of Participants

Sensitivity methods

• Perturbation/sensitivity calculations with Serpent, M. Aufiero
• Comparison of deterministic and Monte Carlo sensitivity analysis of SNEAK-7A and FLATTOP-Pu Benchmarks, I. Kodeli

Integral experiments

• PROTEUS experiments: selected experiments sensitivity profiles and availability, M. Hursin, M. Salvatores (PROTEUS Experiments, HCLWR configurations)
• SINBAD Benchmark Database and FNS/JAEA Liquid Oxygen TOF Experiment Analysis, I.Kodeli

• Proposals and volunteers for re-analysis (ASPIS etc), I. Kodeli? , S. Pelloni?, G. Aliberti?
• STEK experiment Opportunity for Validation of Fission Products Nuclear Data, D. Da Cruz

• SEG (tailored adjoint flux shapes), M.Savatores (comments)
• IPPE transmission experiments (Fe, 238U), T.Ivanova?
• RPI semi-integral (Fe, 238U), G.Palmiotti (comments)
• New experiments, e.g. in connection with the new NSC Expert Group on “Improvement of Integral Experiments Data for Minor Actinide Management”: G.Palmiotti (Some comments from the Expert Group)
• Discussion on possible contributions to the analysis

Integral experiments

• Additional PSI adjustment studies accounting for nonlinearity, S. Pelloni
• Adjustment methodology issues, G. Palmiotti

Am-241 and fission product issues

• Am-241 validation for criticality-safety calculations, A. Barnes (Visio-conference)

• Isotopes to be investigated by SG39, G.Palmiotti, all

Covariance data

• Any new validation, improvement study, P. Archer
• "Covariance Data of JENDL-4.0 and ENDF/B-VII.1 by M. Ishikawa": Analysis and comments, K. Yokohama
• Need for new and complete covariance data. Feedback from CIELO expected (?)

Methodology

• Methodology studies: summary, K. Yokoyama, G. Palmiotti
• PIA: Progressive Incremental Adjustement, G.Palmiotti

• NUDUNA / MOCABA: Monte Carlo-Bayes procedures for improved predictions of integral functions of nuclear data, A. Hoefer
• Sensitivity Computation with Monte Carlo Methods: FLATTOP-Pu, FLATTOP-25, ZPR-9/34, and ZPR-6/10 MC sensitivities, E. Ivanov et al.

Data archive, plots etc.

• Update on comparison plots (NEA DataBank), O. Cabellos

Conclusions

• Issues and actions

Last update: 16 December 2014