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UKAEA-CCFE-PR(26)4302026
In the paper we present validated integrated modelling of JET experiments in which fusion performance is driven by reactions between fast ions and intrinsically present metal wall impurities. A steady-state L-mode plasma with dominant proton-beryllium fusion and neutron yields of up to ≈ 6 x 1013 s-1 is developed in He and D…
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UKAEA-STEP-PR(26)122025
The Spherical Tokamak for Energy Production (STEP) is the UK’s flagship program to design a prototype fusion power plant capable of delivering net electricity to the grid. Due to geometric constraints in spherical tokamaks, STEP is being developed for fully non-inductive operation, relying primarily on microwav…
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UKAEA-CCFE-PR(26)4632025
Experiments at the MAST-U tokamak, supported by simulations, investigate the exhaust benefits of the “Super-X Double-Null” magnetic configuration, particularly whether its elongated, strongly wall-baffled divertor legs enable a broader detachment window than conventional, short-legged designs. This study presents SOLPS-ITER simulations of Su…
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UKAEA-CCFE-PR(26)4252025
A new low energy ion source was developed. ExTEnD (Exposure to Low Energy Deuterium) uses an electrical discharge to create a plasma from which ions can be extracted via a biased sample stage – offering a simple and accessible setup to perform low energy ion exposure for hydrogen retention studies. Careful selection of operating conditions allowe…
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UKAEA-CCFE-PR(26)4242025
The generation and accumulation of dust in future nuclear fusion reactors pose challenges related to safety, waste management and environmental impact. Dust, flakes and droplets form because of plasma-facing component erosion, with highly tritiated and activated materials accumulating in-vessel and during decommissioning activities. Estimations for…
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UKAEA-RACE-PR(26)092025
Industrial applications involving hazardous materials often require inspection within confined interiors, posing significant engineering challenges due to restricted access and complex geometries. Long-reach mechatronic systems are essential for these tasks, yet their kinematic design is typically ad hoc. This paper presents a task-driven design sy…
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UKAEA-CCFE-PR(26)4212025
The competing requirements of fusion breeder blankets and the high dimensionality of their design space necessitate a systematic treatment to map the variations in performance against given objective metrics and to understand the operational envelope. In this endeavour, a digital engineering pipeline for design evaluation and optimisation has be…
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UKAEA-CCFE-PR(26)4192025
Materials used in commercial D-T fusion reactors will be exposed to irradiation and a mixture of helium and hydrogen plasma. Modeling the microstructural evolution of such materials requires the use of large-scale molecular dynamics simulations. The focus of this study is to develop a fast EAM potential for the interactions among the three elements…
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UKAEA-CCFE-PR(26)4182025
Future fusion power plants require structural materials that can withstand extreme operating conditions, including high coolant outlet temperatures, mechanical loading, and radiation damage. Reduced-activation ferritic martensitic (RAFM) steels are a primary candidate as a structural material for such applications. This study demonstrates the succe…
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UKAEA-CCFE-PR(26)4172025
Two ferritic Oxide Dispersion Strengthened (ODS) steels Fe-12Cr-YWT and Fe-14Cr-YWT were irradiated in the High Flux Reactor (HFR) up to 3 dpa at a nominal temperature of 600°C. Tensile tests at room and elevated temperatures as well as microstructural investigations using transmission electron microscopy (TEM) and atom probe tomography (APT) were…
Showing 1 - 10 of 438 UKAEA Paper Results