-
UKAEA-CCFE-PR(26)4262025
The first results of studies of high-power (≥ 3 MW) H-mode discharges in double-null X-point-target (XPT) divertor configuration on MAST-U are presented. By combining the large strike point radius of the Super- X divertor with an additional X-point in the baffled outer divertor chambers, further exhaust benefits in strongly detached conditions…
-
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…
-
UKAEA-CCFE-PR(26)4242025
The generation and accumulation of dust in future nuclear fusion reactors pose challenges related to safety, waste management and environmental impact. Dust, flakes and droplets form because of plasma-facing component erosion, with highly tritiated and activated materials accumulating in-vessel and during decommissioning activities. Estimations for…
-
UKAEA-CCFE-CP(26)422023
Spherical tokamaks show great potential in being the basis for a compact fusion power plant. With a reduced aspect ratio and the benefit of increased plasma performance, spherical tokamaks provide a pathway for tokamak electricity production with reduced capital costs compared to conventional aspect ratio tokamak power plant designs. The…
-
UKAEA-CCFE-CP(26)412023
In 2021 JET exploited its unique capabilities to operate with T and D–T fuel with an ITER-like Be/W wall (JET-ILW). This second major JET D–T campaign (DTE2), after DTE1 in 1997, represented the culmination of a series of JET enhancements—new fusion diagnostics, new T injection capabilities, refurbishment of the T plant, increased auxiliary h…
-
UKAEA-CCFE-CP(26)402023
A key objective of fusion research is to develop pathways to integrate good confinement in the core and pedestal with strong dissipation of power and particles in the divertor through a combination of experimental demonstration and modelling. The MAST Upgrade spherical tokamak has unique capabilities to find solutions to this integration challeng…
-
UKAEA-CCFE-CP(26)392023
This paper sets out what needs to be considered when considering a Funded Decommissioning Programme (FDP). In the UK a FDP is submitted to the secretary of state for approval as a requirement for a nuclear site licensee to install or operate a nuclear power station. The United Kingdom Atomic Energy Authority (UKAEA) Spherical Tokamak for Energy …
-
UKAEA-CCFE-CP(26)382023
A pedestal density prediction model based on combining the transport in the pedestal to an ionization model is used to predict the density profile of tokamak H-mode pedestals. The transport model combines stiff ETG turbulence, KBM turbulence based on critical pressure gradient and a small neoclassical transport. The ionization aspect of the mode…
-
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 i…
-
UKAEA-RACE-PR(26)092025
Industrial applications involving hazardous materials often require inspection within confined interiors, posing significant engineering challenges due to restricted access and complex geometries. Long-reach mechatronic systems are essential for these tasks, yet their kinematic design is typically ad hoc. This paper presents a task-driven design sy…
Showing 1 - 10 of 2525 UKAEA Paper Results