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UKAEA-CCFE-PR(26)4652024
Deuterium retention was measured in beryllium samples from the JET ITER-like wall limiter tiles that were in the JET vessel for one and three campaigns (in vessel during 2015-2016 and 2011-2016, respectively), using thermal desorption spectroscopy, ion beam analysis and secondary ion mass spectrometry. It was found that overall retention increas…
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UKAEA-CCFE-PR(26)4592024
Parametric study of main flow characteristics in magnetohydrodynamic flow in the exit pipe from a liquid metal blanket has been performed. The flow in such a duct occurs in a nonuniform, decreasing magnetic field. The duct wall is electrically conducting. The wall conductance ratio, c, and the gradient of the field, γ, have been varied in a wide r…
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UKAEA-CCFE-PR(26)4612024
Self-passivating W-11.4Cr-0.6Y (in wt.%) alloy is the plasma-facing armour material candidate in fusion power plants. In the present work, the as-sintered material, fabricated via ball milling and field-assisted sintering, was annealed at 1000℃ for varying durations to induce phase decomposition. This process leads to the transformation of the in…
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UKAEA-CCFE-PR(26)4602024
In Joint European Torus with beryllium as a main impurity in the plasma, the confined fusion α-particle diagnosing was based on detection of γ-rays due to the 9Be(α,nγ)12C nuclear reaction. The same diagnostic approach was accepted in the earlier International Thermonuclear Experimental Reactor designed with B…
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UKAEA-CCFE-PR(26)4572024
The Yacora solver has been used to generate two novel molecular rate databases for use in SOLPS-ITER. The reduced Yacora database utilises updated cross-sectional data, whilst the full Yacora database includes the same updated cross-sectional data in addition to the inclusion of vibrational reactions such as off-diagonal vibrational electron-impact…
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UKAEA-STEP-PR(24)232024
Electron Bernstein waves (EBWs) are theorised to efficiently drive current in spherical tokamak power plants, e.g. Spherical Tokamak for Energy Production (STEP). At high temperatures (Te ≳4keV), relativistic effects can significantly impact wave propagation. This work presents relativistic calculations of EBW wave propagation, damping, and curre…
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UKAEA-CCFE-PR(26)4582024
engineering components. Within the nuclear fusion energy industry, a remote laser welding technique will be extensively employed for the assembly and maintenance of in-vessel components, predominantly constructed from Eurofer97 steel. The welding process introduces significant re…
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UKAEA-CCFE-PR(26)4562024
A Gas Electron Multiplier (GEM) based detector was exploited for the first time on the MASTU tokamak during the 2023 campaign to investigate Soft X-Ray (SXR) radiation (1-20keV) emitted from the plasma. SXR radiation carries essential information on electron temperature and density, impurity presence, and Magneto-hydrodynamic (MHD) activities, m…
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UKAEA-CCFE-PR(26)4552024
The linear MHD peeling-ballooning stability analysis on the ELM-free phase of MAST Upgrade H-mode plasma is presented. In contrast to other similar discharges, #47018 is found to have significantly higher and wider pedestal during an ELM-free H-mode phase that lasts for approximately 80ms, which is made possible by the reduced core MHD mode acti…
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UKAEA-STEP-PR(26)102024
Tungsten-based compounds are prized for exceptional properties crucial in nuclear fusion applications. Commonly cemented carbides can not be used in nuclear fusion applications due to the environmental, nuclear and high temperature limitations of cobalt and its alloys. This work proposes the use of small additions of low activation metals as alt…
Showing 11 - 20 of 2583 UKAEA Paper Results