1. KIT – The cooperation of Forschungszentrum Karlsruhe GmbH and Universität Karlsruhe (TH) Institute for Neutron Physics and Reactor Technology Evaluation of n+Cr cross section data up to 200 MeV neutron energy including covariances P.Pereslavtsev, A. Konobeyev, L. Leal, U. Fischer

2. 23-26 March 2010, IAEA, Vienna 2 Objectives Improvements of the nuclear model simulations based on the TALYS code. Calculations of the covariances up to 200 MeV using Unified Monte Carlo approach. Inclusion in the files the new data for resonance region. Preparation of the neutron transport data files for Cr-50,53,54 isotopes for incident energies up to 200 MeV. Benchmarking of the newly developed neutron data files. Compilation of the integral experimental data on Cr. MCNP benchmark transport calculations. Correction of the evaluated data if necessary.

3. 23-26 March 2010, IAEA, Vienna 3 Nucelar model calculations TALYS-1.0 code was used for the nuclear modles calculations up to 200 MeV incident neutron energies GDH model for the preequlibrium reactions was included in the code The detailes are reported by A. Konobeyev (EFFDOC-1102) GDH model is included in TALYS as an option (preeqmode 5) TALYS executable and source files are available Global OMPs for deuterons, tritons, helions and alphas are used instead of folding approach Generalised superfluid model for level densities The set of the best model parameters was found on the basis of the optimization procedure (Monte Carlo simulations)

4. 23-26 March 2010, IAEA, Vienna 4 Quality assurance of the evaluated data TALYS code for the nuclear model calculations Well proved nuclear models Inclusion of the new resonance data Detailed comparison with available experimental data Cross sections for individual channels Differential cross sections (angular, energy, energy-angular distributions) Cross check of the evaluated data within the covariances calculations Particle transport calculations for comparison with integral experimental data and feedback for the evaluated data

5. 23-26 March 2010, IAEA, Vienna 5 Total and elastic scattering cross sections

6. 23-26 March 2010, IAEA, Vienna 6 Results of the evaluation for 50 Cr (partial cross sections)

7. 23-26 March 2010, IAEA, Vienna 7 Results of the evaluation for 52 Cr (partial cross sections)

8. 23-26 March 2010, IAEA, Vienna 8 Results of the evaluation for 53 Cr (partial cross sections)

9. 23-26 March 2010, IAEA, Vienna 9 Results of the evaluation for 54 Cr (partial cross sections)

10. 23-26 March 2010, IAEA, Vienna 10 Gas production data (protons)

11. 23-26 March 2010, IAEA, Vienna 11 Gas production data (alphas)

12. 23-26 March 2010, IAEA, Vienna 12 Particle emission spectra (neutrons)

13. 23-26 March 2010, IAEA, Vienna 13 Particle emission spectra (photons)

14. 23-26 March 2010, IAEA, Vienna 14 Charged particle emission spectra (alphas)

15. 23-26 March 2010, IAEA, Vienna 15 Evaluated data file content (promising) MF1MF2MF3MF4MF6MF8 MF10 MF12MF14MF33MF40 MT= 2, 51-70 MT= 5 (n, p, d, t, h, , recoils,  - spectra), 102 MT= 5 MT= 5 (subsections for each recoil) MT= 51-70 MT= 1, 2, 51-70, 102 MT= 5 (subsections for each recoil) MT=451, general information MT=151, resonance parameters MT= 1, 2, 5, 51-70, 102

16. 23-26 March 2010, IAEA, Vienna 16 Evaluated data file content (conventional) MF1MF2MF3MF4MF6MF8 MF10 MF12MF14MF33 MT= 2, 51-70 MT= … MT= 51-70 MT=451, general information MT=151, resonance parameters MT= 1,2,4,5,16,17,22,28,5,51-70,102,103,104,105,106,107

17. 23-26 March 2010, IAEA, Vienna 17 OKTAVIAN benchmark: neutron leakage spectra

18. 23-26 March 2010, IAEA, Vienna 18 OKTAVIAN benchmark: neutron flux integrals

19. 23-26 March 2010, IAEA, Vienna 19 Conclusions The neutron transport files are available for all stable Cr isotopes for neutron energies up to 200 MeV GDH model for the preequilibrium reactions was included as an option in TALYS code The set of the optimal models paramers and nuclear models for TALYS calculations was obtained for Cr-50,53,54 isotopes Very good description of the avalable experimental data was achieved The calculations of the covariances are being finalized. The newly evaluated resonance parameters will be supplied by L. Leal The ENDF-6 files are expected to be prepared by the end of April 2010 The benchmark calculations were done