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UKAEA-CCFE-PR(25)3912023
Accurate computation of power deposition is expected to be critical for the successful design of plasma facing components (PFCs) in reactor-scale magnetic confinement devices. The work provides analysis and model computations to help explain the high levels of accuracy obtainable using relatively coarse meshing of PFCs to treat cases with shar…
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UKAEA-CCFE-CP(25)262023
Model-based plasma scenario development lies at the heart of the design and operation of future fusion powerplants. Including gyrokinetic turbulence in integrated models is essential for delivering a successful roadmap towards operation of ITER and the design of DEMO-class devices. Given the highly iterative nature of integrated models, fast mac…
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UKAEA-CCFE-CP(25)252024
The integrated modelling tool JINTRAC [1] was recently updated and now has the unique capability of fully consistent treatment of Deuterium and Tritium in the whole plasma volume. In this work this is utilized with coupled core-SOL-divertor simulations performed for the ITER 15MA/5.3T DT Q=10 scenario. The work is built on previous simulations publ…
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UKAEA-CCFE-PR(25)3882022
Iron is an essential element in construction materials for fission and fusion reactors. Due to its complexity, the evaluation of iron cross sections continues to represent a challenge for the international nuclear data community. A comprehensive validation of any new nuclear data evaluation (and the computational procedure) against experimental …
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UKAEA-CCFE-PR(25)3872022
We combine reachability analysis and probability bounds analysis, which allow for imprecisely known random variables (multivariate intervals or p-boxes) to be specified as the initial states of a dynamical system. In combination, the methods allow for the temporal …
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UKAEA-CCFE-PR(25)3862025
In high performance regimes short (sub ms) bursts of heat and particles from the core (edge localised modes, ELMs) happen cyclically increasing temporarily the heat flux by 2-3 orders of magnitude, and this can hardly be tolerated by large tokamaks. If ELMs happen when the target is detached the plasma temporarily reattaches and looses energy in th…
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UKAEA-CCFE-PR(25)3852025
The fusion research facility ITER is currently being assembled to demonstrate that fusion can be used for industrial energy production, while several other programmes across the world are also moving forward, such as EU-DEMO, CFETR, SPARK and STEP. The high engineering complexity of a tokamak makes it an extremely challenging device to optimise,…
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UKAEA-CCFE-PR(25)3842024
Radiation creep and swelling are the macroscopic irreversible deformation phenomena, occurring in materials exposed to energetic particle irradiation even at low temperatures. On the microscopic scale, energetic particles initiate collision cascades, generating and…
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UKAEA-RACE-PR(25)062025
We address the critical challenge of vibration con trol of flexible long-reach robot manipulators used in nuclear decommissioning. The research is motivated by the urgent need to ensure precision and safety during the deployment of robotic systems in confined and hazardous environments, such as the through-wall deployment (TWD) system for the Sella…
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UKAEA-CCFE-PR(25)3822025
The plasma energy and particle flows in double-null configurations during MAST L-mode discharges are investigated using the 3D plasma turbulence code STORM. The modelling reproduces key phenomena, such as in-out and up-down heat load asymmetries, despite not having a sophisticated neutral model. Turbulent energy transport, driven by ballooning-like…
Showing 101 - 110 of 2563 UKAEA Paper Results