The NEA and the Nuclear Data Services. Hans Henriksson, OECD/NEA Data Bank

Transcription

1 The NEA and the Nuclear Data Services Hans Henriksson, OECD/NEA Data Bank

2 Contents The Nuclear Energy Agency Nuclear data services from the NEA Data Bank Evaluated data working parties and HPRL Experimental data in EXFOR Extracting n-, d- and p-induced EXFOR data for EASY Computer tools: Janis display program Evaluated data: JEFF, EFF/EFF Benchmark experiments and SINBAD Summary and outlook EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 2

3 The NEA mission The mission of the NEA is to assist its member countries in maintaining and further developing the scientific, technological and legal bases for safe, environmentally friendly and economical use of nuclear energy for peaceful purposes. The NEA works as a forum for international co-operation and as a centre of excellence which helps member countries with technical expertise. The NEA s current membership countries in Europe, North America and the Asia-Pacific region. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 3

4 NEA organisation and the Data Bank The NEA Data Bank consists of: Nuclear Data Services Computer Program Services Thermochemical Database for actinides, fission and activation products Reactor Physics Computer Systems EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 4

5 NSC and the Data Bank Working methodology: Working parties on strategic issues. Example is WPEC Horizontal projects (externally funded): Radioactive waste management, Nuclear Safety, Generation IV international forum (GIF). Future directives: To be established by consensus between OECD member countries. Discussed with research establishments, regulators, universities, international organisations. This gives a forum flavour to the NEA committees. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 5

6 The NEA suite of nuclear data services JEFF, EAF MCJEFF3.1 Janis, MCNP Experimental data: EXFOR SINBAD Conferences, workshops EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 6

7 Working Party on International Nuclear Data Evaluation Co-operation (WPEC) Established to promote the exchange of information on nuclear data evaluations, measurements, nuclear model calculations, validation. Provides a framework for co-operative activities between the participating projects. Assesses needs for nuclear data improvements and initiates joint evaluation and/or measurement efforts. Examples of subgroup: High Priority Request List coordinated by A. Plompen Nuclear data needs for Generation-IV, M. Salvatores EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 7

8 NEA High Priority Request List Place where data users meet data producers NEA website: Submission of requests Viewing/searching list Review and approval of request NEA WPEC Subgroup-C External referees Requests for evaluations High priority: General: with Quantitative justification with More qualitative justification Tied to a project (e.g. ITER or IFMIF) including project life span. Your input is most welcome: Requests at present: 3 high priority, and 1 general. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 8

9 Experimental reaction data in EXFOR EXFOR contains about 16,000 experiments from 1935, divided in about 120,000 different reactions. International network of nuclear reaction data centres (NRDC) meet annually to discuss EXFOR. The core centres are: NEA-DB (Int. org.), BNL/NNDC (USA), IAEA/NDS (Int. org.) and CJD/IPPE (Russia). Additional specialised centres in China, Hungary, Japan, Korea, Russia and Ukraine. Neutron- as well as charged-particle data Feedback to the NRDC of corrections is very welcome! Final note: Please, refer to the EXFOR work number in articles. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 9

10 Incident particles in EXFOR 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Other Other Proton Proton Neutron Neutron Total Since Other Carbon Lithium Alpha Deuteron Gamma Proton Neutron EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 10

11 EXFOR for EASY and EAF Preparation of experimental data for EAF: EXFOR sorted on experiment (Work and subwork) EAF in EASY sorted on Z and A of target This results in: A complete list of all (relevant) reactions in EXFOR, and assignment of codes for EAF. Restructuring of EXFOR where all available data are collected per target: \ZA\Z001\A003 (for 3 H) Files with a list of entries are created (e.g. Z001A003.ACC) EAF data files are stored: SIG (contains data on 3 H) Maintenance to keep track of modifications to EXFOR EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 11

12 Summary of EXFOR conversion The latest update of the experimental neutron-induced data in EASY resulted in about 1.3 Gb of data. Some numbers: 557 targets 42,850 measured reactions (996 distinct reactions) Data from about 23,000 experiments The data could be stored on two CDs (the limit is reached). The preparation of experimental data has recently included experimental deuteron- and proton-induced data. Proton data: 339 targets in about 28,000 reactions from 6,300 experiments (605 distinct reactions) Deuteron data: 262 targets in 4,300 reactions from 1,700 experiments (187 distinct reactions) EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 12

13 JANIS: JAva-based Nuclear Information Software Visualisation and manipulation of experimental and evaluated nuclear data through remote access to the NEA databases or to local data. The program contains: Information from main evaluated data libraries (EFF and JEFF, JENDL, ENDF/B, CENDL, BROND ) Experimental data from EXFOR Display tools for comparing data and calculate parameters JANIS is free of charge. Request a DVD, or download directly from the NEA: Newest version, JANIS-2.2.1, integrated with the NEA Web retrieval pages EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 13

14 JANIS examples: Browser EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 14

15 JANIS examples: EXFOR EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 15

16 JANIS examples: Plotting EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 16

17 Comparison and calculation EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 17

18 EXFOR web retrieval and JANIS EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 18

19 Evaluated data retrieval and Janis Further questions: EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 19

20 The JEFF Project: Collaboration between fission (JEF) and fusion (EFF/EAF) nuclear data evaluators EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 20

21 Summary of JEFF-3.1, released in May 2005 Incident neutron data (381 isotopes) from JEFF-3.0 and JEF-2.2, including EFF evaluations JENDL-3.3 ENDF/B-VI.8 and ENDF/B-VII New data on structural materials: Ti, Fe, Cr, Ni, W, Pb, Bi JEFF-3.1/A (The European Activation File, EAF-2003) with 774 different targets from 1 H to 257 Fm. (12,600 reactions) Thermal scattering law data Incident proton data (26 isotopes) Radioactive Decay Data and Fission yield files (JEFF-3.1/RDD and JEFF- 3.1/FY) Processed JEFF-3.1 data for MCNP, 11 temp. MCJEFF3.1 EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 21

22 European Fusion and Activation Files (EFF/EAF) The NEA give support to the EFF/EAF project, combining several EFDA tasks on evaluated nuclear data for fusion, co-ordinated by: Robin Forrest (evaluations and theoretical tools) Paola Batistoni (experiments for benchmarking and validation) The project focuses on transport (EFF) and activation (EAF) calculations including nuclear data evaluations and library production, verification of data, development of codes, validation of nuclear data through integral experiments. Several European institutions contribute to the EFF/EAF project through association contracts. EFF/EAF meetings are organised two times per year by the NEA. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 22

23 Recent EFF tasks carried out: Experimental data Irradiation of a Test Blanket Module (TBM) mock-up at FNG, ENEA, Italy Activation experiments have been conducted both in 14 MeV and white IFMIF-like spectra including irradiation of materials such as: Steels (AISI-316, F82H, MANET, Eurofer-97), Fe, V-alloys, Cu, CuCrZr, Al, SiC, Li 4 OSi 4, Cr, Ta, Pb, Y, La, Sn and Be Divertor and First Wall materials such as W and Mo EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 23

24 Recent EFF tasks carried out: Evaluations / Calculations Evaluations of W, Pb, Ta, Be, and Si for energies up to 150 MeV. Cross sections were calculated with the ECIS-96 and GNASH codes Covariance data were generated by means of the Bayesian code GLUCS Calculational tools have been developed for the Monte Carlo based calculation of sensitivities and uncertainties (S&U) using both point detector and track length estimators, implemented in MCSEN. MCSEN is well qualified for S&U analyses of fusion devices such as ITER as well as neutronics benchmark experiments. The method was already applied for the tritium production measurements in the HCPB breeder blanket mock-up experiment EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 24

25 Future development in EFF/EAF New cross section evaluations for EFF: 55 Mn and 52 Cr up to 150 MeV. Covariances of oxygen will be investigated theoretically. Calculations aimed for EAF on Cu and Mn. Completion of EAF-2007 including deuteron- and proton-induced activation data to enable calculations on IFMIF. Further code development on MCSEN for reactor applications towards ITER. Benchmarking of recent EFF evaluations such as Pb and V. Activity measurements on for example Cr and La. Experiments on the Helium Cooled Lithium-Lead blanket concept are planned to follow the HCPB measurements. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 25

26 JEFF-3.1 feedback and outlook Recent feedback of the neutron library include: (Trivial) format errors, (e.g. 23 Na and 240 Pu) Too many data points for certain processing codes ( 52 Cr) Inconsistencies between total and partial cross sections ( 57 Fe) Discontinuity for the resonance regions ( 58 Co) New evaluations on photonuclear data have been proposed from the CEA. Evaluations of delayed neutron data for photo-fission. New evaluated 235 U and 238 U files to be ready soon. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 26

27 NEA collections of integral experiments Independent verification and validation using quality assurance methods International benchmark exercises, workshops and meetings Integral Experiments for code and Data Validation: SINBAD (radiation shielding & dosimetry) ICSBEP (criticality experiments for fuel cycle facilities) IRPhE (reactor physics experiments) IFPE (Fuel performance experiments) EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 27

28 SINBAD - Scope and Objectives Compilation of experiments for validation and benchmarking of codes and nuclear data used for radiation transport and shielding: reactor shielding, dosimetry (38) accelerator shielding (13) fusion blanket neutronics (27) SINBAD data include benchmark information on: experimental facility and radiation source; benchmark geometry and material composition; detection system, measured data, and an error analysis. Distributed by the RSICC and the NEA Data Bank. New contributions on benchmark experiment data, assistance in review and feedback information are welcome. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 28

29 Summary and outlook The NEA administrates and facilitates access to data and codes for nuclear energy applications. WPEC organises international co-operation in nuclear data, e.g. HPRL EXFOR is the main database of experimental nuclear reaction data. JANIS visualises and compares evaluated and experimental data directly from Web retrieval of for example EXFOR and JEFF. The JEFF-3.1 suite of libraries was released in May 2005 and processed data for MCNP, ACE libraries, are available at the NEA. JEFF Report 21 to be published this year. The next release, JEFF-3.2, will improve fission product evaluations, photo-nuclear data, minor actinide evaluations, and more covariance data. EAF-2007, basis for the next JEFF activation library. EAF-2007, Prague 2-4 Oct, 2006 NEA Nuclear Data Services, H. Henriksson 29