Abstract
• First overview of the EUROfusion materials property handbook. • Review paper summarizing years of research on fusion materials. • First overview of Tungsten and optical and dielectric materials databases. • Strategic direction for EUROfusion materials data gathering presented. The development of a specific materials database and handbook, for engineering design of in-vessel components of EU-DEMO, is an essential requirement for assessing the structural integrity by design. For baseline in-vessel materials, including EURFOER97, CuCrZr, Tungsten as well as dielectric and optical materials, this development has been ongoing for several years within the Engineering Data and Design Integration sub-project of the EUROfusion Materials Work Package. Currently the database is insufficient to ensure reliable engineering design and safety or hazard analysis and mostly does not yet exist in established nuclear codes. In this paper the current status of EU-DEMO database and handbook for key in-vessel materials is provided. This comprises practical steps taken to obtain the raw data, screening procedures and data storage, to ensure quality and provenance. We discuss how this procedure has been utilized to produce materials handbook chapter on EUROFER97 and the critical challenges in data accumulation for CuCrZr and Tungsten, planned mitigations and the implications this has on structural design. Finally, key elements and methodology of our strategy to develop the materials database and handbook for the in-vessel materials are outlined, including concepts to accommodate sparse irradiated materials data and links to EU-DEMO engineering design criteria.
Highlights
The development of DEMOnstration reactors, that prove the scientific and technical viability of fusion reactors, is of paramount importance to realizing commercially viable fusion power for humanity
Examine the current status and plans for the materials handbook and database for the key structural (EUROFER97), armor (Tungsten), heat sink (CuCrZr) and optical and dielectric materials considered for the EU-DEMO in-vessel components
Neutron irradiation flux is significant in EU-DEMO in-vessel components and has many significant effects on the properties of materials and irradiation aged materials properties must be considered in the materials property handbooks to enable design of EU-DEMO [36]
Summary
The development of DEMOnstration reactors, that prove the scientific and technical viability of fusion reactors, is of paramount importance to realizing commercially viable fusion power for humanity. The organization, collection, collation, quality checking and dissemination of structural, armor, heat sink and optical/dielectric invessel materials test data is underway within EUROfusion’s Power Plant Physics and Technology programme, in the Engineering Design and Data Integration sub-project of the Materials work package. This is being realised through development of a specific materials database and handbook for these in-vessel materials. Examine the current status and plans for the materials handbook and database for the key structural (EUROFER97), armor (Tungsten), heat sink (CuCrZr) and optical and dielectric materials considered for the EU-DEMO in-vessel components. We summarize the current status and strategy within EUROfusion to obtain the required materials properties to enable the engineering design of EU-DEMO in-vessel components; highlighting the proposed approaches to cover fusion specific properties within EUDEMO project timeframes and progressively improve confidence in the engineering design
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