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UKAEA-STEP-PR(24)132024
The purpose of the digital workstream is the shorten the pathway to delivering a working fusion pilot plant. As with any development pathway there are rate limiting steps in a programme, a fairly major challenge that is common across fusion concepts is the limited possibility of physical testing with conditions close to that of a first wall environ…
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UKAEA-STEP-PR(22)032022
We investigate the in-field critical current density Jc(B) of superconducting-normal-superconducting (SNS) Josephson junctions (JJs) and polycrystalline superconducting systems with grain boundaries modeled as Josephson-type planar defects, both analytically and through computational time-dependent Ginzburg-Landau (TDGL) simulations in two and thre…
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UKAEA-STEP-PR(23)042021
Understanding the properties of grain boundaries in polycrystalline superconductors is essential for optimizing their critical current density. Here, we provide computational simulations of 2D Josephson junctions (JJs) in low magnetic fields using time–dependent Ginzburg–Landau theory, since they can be considered a proxy for a grain boundar…
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UKAEA-STEP-PR(21)012021
Simulations based on time-dependent Ginzburg–Landau theory are employed to determine the critical current for a model system which represents a Nb–Ti-like pinning landscape at low drawing strain. The system consists of ellipsoids of normal metal, with dimensions 60ξ × 3ξ × 3ξ, randomly distributed throughout the superconducting bulk with t…
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