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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-RACE-PR(26)122025
The current strategy for joining ITER diverter cooling pipes is to conduct semi-automated autogenous Tungsten Inert Gas (TIG) welding on thin-walled pipes using an inserted flat washer filler ring. In this approach, the positioning of the filler ring and the alignment the pipe stubs so far can only be achieved manually. However, it has limitatio…
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UKAEA-CCFE-PR(26)4682025
Diamond has several possible applications within fusion reactors, including windows, sensors/diagnostics and has shown promise as a plasma facing material. For some of these applications, polycrystalline diamond may be preferable to single crystal, meaning the impact of grain boundaries on retention mechanisms needs to be understood. As such, this …
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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-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)4692024
The European DEMOnstration Fusion Power Plant DEMO represents a significant milestone in the progression towards sustainable fusion energy and a critical phase between ITER and commercial fusion reactors, aiming to demonstrate sustained net positive electricity production. Thanks to its properties, tungsten is a promising material for divertor a…
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UKAEA-CCFE-PR(26)4622025
This work introduces a reduced model to predict the “resonance overlap threshold” governing transport of Fast Ions (FIs) by Toroidal Alfven Eigenmodes (TAEs) in tokamak plasmas. TAE-FI resonance occurs within distinct “resonance regions” of particle phase space, which grow wider when the TAE mode amplitude increases. If these resonance r…
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UKAEA-STEP-PR(26)112024
The high-temperature superconductors are being increasingly employed to construct electromagnets to generate strong magnetic field for a broad range of applications: from medical devices, electric motors, to future fusion reactors. These superconductors can experience a quench phenomenon which manifests itself as a fast increase of temperature i…
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UKAEA-CCFE-PR(26)4642024
Efficient data streaming is essential for real-time data analytics, visualization, and machine learning model training, particularly when dealing with high-volume datasets. Various streaming technologies and serialization protocols have been developed to cater to different streaming requirements, each performing differently depending on specific…
Showing 1 - 10 of 2584 UKAEA Paper Results