Abstract
The activities of the EUROfusion consortiums on the development of high quality nuclear data for fusion applications are presented. The activities, implemented in the Power Plant Physics and Technology (PPPT) programme of EUROfusion, include nuclear data evaluations for neutron and deuteron induced reactions and the production of related data libraries which satisfy the needs for nuclear analyses of the DEMO fusion power plant and the IFMIF-DONES neutron source. The activities are closely linked to the JEFF initiative of the NEA Data Bank. The evaluation work is complemented by extensive benchmark, sensitivity and uncertainty analyses to check the performance of the evaluated cross-section data and libraries against integral experiments.
Highlights
The European Fusion Programme aims at the realisation of fusion as energy source for the production of electricity, delivered to the grid, by the middle of the century [1]
The activities, implemented in the Power Plant Physics and Technology (PPPT) programme of EUROfusion, include nuclear data evaluations for neutron and deuteron induced reactions and the production of related data libraries which satisfy the needs for nuclear analyses of the demonstration plant (DEMO) fusion power plant and the IFMIF-DONES neutron source
3.3 Advanced methodologies for the evaluation of fast n + 56Fe neutron cross sections. This activity, jointly conducted by PSI, Würenlingen, Switzerland, and the University of Uppsala, Sweden, aims at providing, on the example of 56Fe neutron cross-section data, up-to-date methods for general purpose cross-section data evaluations for inclusion in nuclear data libraries. This includes an extension of the Total Monte Carlo (TMC) [17] approach with the Bayesian MC (BMC) method to find the best final evaluation, and the use of Gaussian processes to take into account model defects [18]
Summary
The European Fusion Programme aims at the realisation of fusion as energy source for the production of electricity, delivered to the grid, by the middle of the century [1]. Related development works are conducted within the Power Plant Physics and Technology (PPPT) programme of the EUROfusion consortium This includes, as central elements, the development of a fusion power demonstration plant (DEMO), and the high intense neutron source IFMIF-DONES (International Fusion Material Irradiation Facility- DEMO Oriented NEutron Source) for the material qualification. The EUROfusion consortium has implemented a dedicated activity on the development of high quality nuclear data to support neutronics in the PPPT programme This includes the evaluation of general purpose neutron cross-section data as required for design calculations using particle transport codes, the generation of new activation and displacement damage cross-section data libraries, and evaluation of deuteron cross-sections as required for the IFMIF-DONES accelerator. The focus is on the achievements obtained in the area of nuclear data evaluations, benchmarking and validation, activation and radiation damage, nuclear model and method improvements, and sensitivity/uncertainty assessments
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