The NEA's nuclear data evaluation co-operation activities involve the following evaluation projects: ENDF (United States), JENDL (Japan), ROSFOND/BROND (Russia), JEFF (other Data Bank member countries) and CENDL (China) in close co-operation with the Nuclear Data Section of the International Atomic Energy Agency (IAEA).
The working party was established to promote the exchange of information on nuclear data evaluations, measurements, nuclear model calculations, validation, and related topics, and to provide a framework for co-operative activities between the participating projects. The working party assesses nuclear data improvement needs and addresses these needs by initiating joint evaluation and/or measurement efforts.
WPEC mandate (last update, May 2016)
Expert Groups
| B | Recommended Definition of a General Nuclear Database Structure | |
| Chair: D. Brown | ||
| C | High Priority Request List (HPRL) | |
| Chair: E. Dupont |
Subgroups
| 49 | Reproducibility in Nuclear Data Evaluation | Status: Starting |
| Co-ordinators: D. Rochman and M. Herman Monitors: D. Brown, O. Iwamoto and A. Koning |
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| 48 | Advances in Thermal Scattering Law Analysis | Status: Starting |
| Co-ordinator: G. Noguère Monitor: A. Hawari |
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| 47 | Use of Shielding Integral Benchmark Archive and Database for Nuclear Data Validation | Status: Ongoing |
| Co-ordinator: I. Kodeli Monitors: O. Cabellos, L. Leal |
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| 46 | Efficient and Effective Use of Integral Experiments for Nuclear Data Validation | Status: Ongoing |
| Co-ordinators: M. Salvatores and G. Palmiotti Monitors: A. Plompen and M. Herman |
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| 45 | Validation of Nuclear Data Libraries (VaNDaL) Project | Status: Ongoing |
| Co-ordinators: M. White and D. Bernard Monitor: A. Trkov |
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| 44 | Investigation of Covariance Data in General Purpose Nuclear Data Libraries | Status: Ongoing |
| Co-ordinators: V. Sobes and C. de Saint Jean | ||
| 43 | Code infrastructure to support a modern general nuclear database (GND) structure | Status: Ongoing |
| Co-ordinators: J. Conlin and C. Mattoon Monitor: F. Malvagi |
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| 42 | Thermal Scattering Kernel S(α,β): Measurement, Evaluation and Application | Status: Closed |
| Co-ordinator: G. Noguère | ||
| 41 | Improving nuclear data accuracy of Am-241 and Np-237 capture cross-sections | Status: Closed |
| Co-ordinator: H. Harada | ||
| 40 | Collaborative International Evaluated Library Organisation (CIELO) Pilot Project | Volume 40 (2019) |
| Co-ordinator: M. Chadwick | ||
| 39 | Methods and approaches to provide feedback from nuclear and covariance data adjustment for improvement of nuclear data files |
Status: Closed |
| Co-ordinators: G. Palmiotti and M. Salvatores | ||
| 38 | Beyond the ENDF format: A modern nuclear database structure | Status: Closed |
| Co-ordinator: D. McNabb | ||
| 37 | Improved fission product yield evaluation methodologies | Status: Closed |
| Co-ordinator: R.W. Mills | ||
| 36 | Evaluation of experimental data in the resolved resonance region | Status: Closed |
| Co-ordinator: P. Schillebeeckx | ||
| 35 | Scattering angular distribution in the fast energy range | Status: Closed |
| Co-ordinator: T. Kawano | ||
| 34 | Coordinated evaluation of Plutonium-239 in the resonance region | Volume 34 (2014) |
| Co-ordinator: C. De Saint-Jean | ||
| 33 | Methods and issues for the combined use of integral experiments and covariance data | Volume 33 (2013) |
| Co-ordinators: G. Palmiotti and M. Salvatores | ||
| 32 | Unresolved resonance treatment for cross section and covariance representation | Volume 32 (2011) |
| Co-ordinator: L. Leal | ||
| 31 | Meeting nuclear data needs for advanced reactor systems | Volume 31 (2014) |
| Co-ordinator: H. Harada | ||
| 30 | Improvement of accessibility and quality of the EXFOR database | Volume 30 (2011) |
| Co-ordinator: A. Koning | ||
| 29 | Uranium-235 capture cross section in the keV to MeV energy region | Volume 29 (2011) |
| Co-ordinator: O. Iwamoto | ||
| 28 | Processing of covariance data in the resonance region | Status: Completed |
| Co-ordinator: M. Dunn | ||
| 27 | Prompt photon production from fission products | Status: Completed |
| Co-ordinator: R. Jacqmin | ||
| 26 | Uncertainty and target accuracy assessment for innovative systems using recent covariance data evaluations | Volume 26 (2008) |
| Co-ordinator: M. Salvatores | ||
| 25 | Assessment of fission product decay data for decay heat calculations | Volume 25 (2007) |
| Co-ordinator: T. Yoshida | ||
| 24 | Covariance data in the fast neutron region | Volume 24 (2011) |
| Co-ordinator: M. Herman | ||
| 23 | Evaluated data library for the bulk of the fission products | Volume 23 (2009) |
| Co-ordinator: P. Oblozinsky | ||
| 22 | Nuclear data for improved LEU-LWR reactivity predictions | Volume 22 (2006) |
| Co-ordinator: A. Courcelle | ||
| 21 | Assessment of neutron cross-section evaluations for the bulk of fission products | Volume 21 (2005) |
| Co-ordinator: P. Oblozinsky | ||
| 20 | Covariance matrix evaluation and processing in the resonance region | Volume 20 (2006) |
| Co-ordinator: T. Kawano | ||
| 19 | Activation cross-sections | Volume 19 (2005) |
| Co-ordinator: A. Plompen | ||
| 18 | Epithermal capture of Uranium-235 | Volume 18 (1999) |
| Co-ordinator: C. Lubitz | ||
| 17 | Status of pseudo-fission product cross-sections for fast reactors | Volume 17 (1998) |
| Co-ordinator: H. Gruppelaar | ||
| 16 | Effects of shape differences in the level densities of three formalisms on calculated cross-sections | Volume 16 (1998) |
| Co-ordinators: C.Y. Fu and M. Chadwick | ||
| 15 | Cross-section fluctuations and self-shielding effects in the unresolved resonance region | Volume 15 (1995) |
| Co-ordinator: F. Fröhner | ||
| 14 | Processing and validation of intermediate energy data files | Volume 14 (2000) |
| Co-ordinator: A. Koning | ||
| 13 | Intermediate energy data | Volume 13 (1998) |
| Co-ordinators: A. Koning and T. Fukahori | ||
| 12 | Nuclear models to 200 MeV for high-energy data evaluations | Volume 12 (1998) |
| Co-ordinator: M. Chadwick | ||
| 11 | Subgroup cancelled | |
| 10 | Evaluation method of inelastic scattering cross-sections for weakly absorbing fission-product nuclides | Volume 10 (2001) |
| Co-ordinator: M. Kawai | ||
| 9 | Fission neutron spectra | Volume 9 (2003) |
| Co-ordinator: D. Madland | ||
| 8 | Present status of minor actinide data | Volume 8 (1999) |
| Co-ordinator: T. Nakagawa and H. Takano | ||
| 7 | Nuclear data standards | Volume 7 (2006) |
| Co-ordinator: A. Carlson | ||
| 6 | Delayed neutron data | Volume 6 (2002) |
| Co-ordinator: A. d'Angelo | ||
| 5 | Plutonium-239 fission cross-section between 1 and 100 keV | Volume 5 (1994) |
| Co-ordinator: E. Fort | ||
| 4 | Uranium-238 capture and inelastic cross-sections | Volume 4 (1999) |
| Co-ordinator: M. Baba | ||
| 3 | Actinide data in the thermal range | Volume 3 (1994) |
| Co-ordinator: H. Tellier and H. Weigmann | ||
| 2 | Generation of covariance files for Iron-56 and natural Iron | Volume 2 (1994) |
| Co-ordinator: H. Vonach | ||
| 1 | Comparison of evaluated data for Chromium-52, Iron-56 and Nickel-58 | Volume 1 (1992) |
| Co-ordinator: C.Y. Fu |