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UKAEA-CCFE-PR(26)4312026
Knowledge of the mechanical properties of materials is required for the design and analysis of engineering products, however, the characterisation of heterogeneous properties using traditional techniques is limited by spatial resolution or insufficient reliability. This paper presents a novel methodology for the characterisation of hete…
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UKAEA-CCFE-PR(26)4282026
This paper presents simulations of alpha-particle transport in ITER driven by static 3D magnetic field perturbations in the high-performance 15 MA Q = 10 baseline scenario, specifically resonant magnetic perturbations (RMPs) arising from edge-localized mode (ELM) control coils, combined with toroidal field ripple (TFR) and effects from ferromagn…
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UKAEA-CCFE-PR(26)4202026
The contributions in magnetic fusion theory presented at the 30th IAEA Fusion Energy Conference (FEC 2025) are summarized. This summary provides information on novel ideas and briefly reviews the most recent advances along the main avenues of the research, such as plasma integrated modelling, computational physics and application of arti…
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UKAEA-CCFE-PR(26)4722025
Alfven eigenmodes driven by positive energy gradients in the alpha particle distribution have been observed in JET deuterium-tritium hybrid JET pulses heated only by neutral beam injection. Coherent low frequency magnetic fluctuations were detected in D-T pulses, but were absent in pure D reference pulses, indicating that the modes were destabil…
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UKAEA-CCFE-PR(26)4672025
Clean energy from nuclear fusion requires the development of an efficient technology for hydrogen isotope separation capable of high separation efficiency with lower energy costs and lower tritium inventory. Isotope separation using adsorbents such as zeolites and MOFs shows great promise due to their high isotope selectivity, but are limited to…
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UKAEA-CCFE-CP(26)432025
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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)4232025
The MAST Upgrade Super-X divertor protects plasma-facing components from heat fluxes during steady-state operation and transient events. This paper examines heat loads from sawtooth events with energies of ΔWsawtooth ≈ 2–9 kJ in lower single null plasmas. The impact of deuterium and nitrogen gas pressures on mitigating these transients is inve…
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UKAEA-CCFE-PR(26)4222025
Dedicated experiments were conducted on Alfvénic instabilities in the ion sub-cyclotron frequency range excited by energetic beam ions in the MAST-Upgrade tokamak. Losses of the beam ions associated with plasma instabilities were measured with a scintillator-type fast ion lost detector (FILD), which provided a 2D image of the losses as functions o…
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UKAEA-CCFE-PR(26)022025
Due to the extreme operating temperatures in nuclear fusion reactors, current materials exhibit a substantial mismatch in mechanical and thermal properties between the tungsten plasma-facing material and the CuCrZr heat sink cooling system. Therefore, a thermal barrier interlayer is required to guarantee continuous operation. In this work, (CrVW…
Showing 1 - 10 of 568 UKAEA Paper Results