Comparative study of deuterium retention in irradiated Eurofer and Fe–Cr from a new ion implantation materials facility

Hollingsworth, A.; Lavrentiev, M. Yu.; Watkins, Rebecca J.; Davies, A.; Davies, S.; Smith, Ronald C.; Mason, Daniel R.; Baron-Wiechec, A.; Köllő, Z.; Hess, J.; Jepu, I.; Likonen, J.; Heinola, K.; Mizohata, Kenichiro; Meslin, E.; Barthe, M.F.; Widdowson, A.; Grech, I. S.; Abraham, Karen; Pender, E.; McShee, A.; Martynova, Y.; Freisinger, M.; Backer, Andrée De

doi:10.1088/1741-4326/ab546e

Cited by 15 publications

(10 citation statements)

References 24 publications

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“…This important issue is receiving significant experimental attention, for example via thermal desorption spectroscopy (TDS) (e.g. [363,364] ), and innovative modelling approaches are being developed such as spatially-resolved SCD [344] .…”

Section: Discussionmentioning

confidence: 99%

Perspectives on multiscale modelling and experiments to accelerate materials development for fusion

Gilbert

Arakawa²,

Bergstrom

et al. 2021

Journal of Nuclear Materials

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Section: Discussionmentioning

confidence: 99%

Perspectives on multiscale modelling and experiments to accelerate materials development for fusion

Gilbert

Arakawa²,

Bergstrom

et al. 2021

Journal of Nuclear Materials

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“…The behaviour of tritium (and hydrogen generally) in materials is a complex scientific topic-and the take-up is affected by neutron damage making vacancies where T can be trapped. Recent theoretical and experimental studies for tungsten suggest the hydrogen trapping may saturate at low dose [70][71][72][73] but at a relatively large level (possibly reduced by adding small amounts of alloying Figure 6. Schematic of gas and fuel injection and pumping/purification cycle (after [75]).…”

Section: Integration Example 2: How To Provide Tritium To the Plasma ...mentioning

confidence: 99%

Towards a fusion power plant: integration of physics and technology

Morris

Akers

Cox

et al. 2022

Plasma Phys. Control. Fusion

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A fusion power plant can only exist with physics and technology acting in synchrony, over space (angstroms to tens of metres) and time (femtoseconds to decades). Recent experience with the European DEMO programme has shown how important it is to start integration early, yet go deep enough to uncover the integration impact, favourable and unfavourable, of the detailed physical and technological characteristics. There are some initially surprising interactions, for example, the fusion power density links the properties of materials in the components to the approaches to waste and remote maintenance in the context of a rigorous safety and environment regime. In this brief tour of a power plant based on a tokamak we outline the major interfaces between plasma physics and technology and engineering considering examples from the European DEMO (exhaust power handling, tritium management and plasma scenarios) with an eye on other concepts. We see how attempting integrated solutions can lead to discoveries and ways to ease interfaces despite the deep coupling of the many aspects of a tokamak plant. A power plant’s plasma, materials and components will be in new parameter spaces with new mechanisms and combinations; the design will therefore be based to a significant extent on sophisticated physics and engineering models making substantial extrapolations. There are however gaps in understanding as well as data – together these are termed “uncertainties”. Early integration in depth therefore represents a conceptual, intellectual and practical challenge, a challenge sharpened by the time pressure imposed by the global need for low carbon energy supplies such as fusion. There is an opportunity (and need) to use emerging transformational advances in computational algorithms and hardware to integrate and advance, despite the “uncertainties” and limited experimental data. We use examples to explore how an integrated approach has the potential to lead to consistent designs that could also be resilient to the residual uncertainties. The paper may stimulate some new thinking as fusion moves to the design of complete power plants alongside an evolving and maturing research programme.

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“…Fusion neutrons are likely to damage the structural material of a BB, creating vacancies and lattice dislocations. It has been argued that this will lead to dynamic trap creation in tungsten [42,43] and EUROFER [44].…”

Section: Standard Casementioning

confidence: 99%

Influence of hydrogen trapping on WCLL breeding blanket performances

et al. 2021

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Tritium transport simulations in water-cooled lithium lead (WCLL) breeding blankets have been performed with FESTIM. Fluid dynamics and heat transfer were coupled to evaluate how temperature and LiPb velocity fields affect tritium transport. The 2D WCLL model consisted of tungsten, EUROFER and liquid LiPb. Tritium inventories and permeation fluxes have been computed and the influence of trapping effects in solid domains was highlighted. It was evaluated that inclusion of trapping mechanisms increases inventory values by 15% and delays permeation to the cooling channels. A parametric study was conducted to investigate the impact of the uncertainty in the literature (2 orders of magnitude) regarding hydrogen solubility in LiPb on these quantities. Varying the lithium lead solubility over the range found in the literature was found to vary the EUROFER inventory by a factor of 25. Permeation fluxes to the coolant channels was found to vary over a factor of 3.

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Comparative study of deuterium retention in irradiated Eurofer and Fe–Cr from a new ion implantation materials facility

Cited by 15 publications

References 24 publications

Perspectives on multiscale modelling and experiments to accelerate materials development for fusion

Perspectives on multiscale modelling and experiments to accelerate materials development for fusion

Towards a fusion power plant: integration of physics and technology

Influence of hydrogen trapping on WCLL breeding blanket performances

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