
UKAEACCFEPR(22)362022
There exists a large body of previous work using reduced twodimensional models of the SOL, which model fluctuations in the driftplane but approximate parallel transport with effective loss terms. Full size threedimensional simulations of SOL turbulence in experimental geometries are now possible, but are far more computationally expensive than …

UKAEACCFECP(23)162021
A comparison between different alternative divertor configurations, in terms of benefits and additional complexity is carried out for the European DEMO. A synergetic approach between different aspects of the problem, including physics and engineering, provides new insight on the capabilities of the new divertors to handle the exhausted power wit…

UKAEACCFEPR(21)452021
Transport processes around the magnetic Xpoint of tokamaks, such as turbulence and meanfield drifts, are scarcely understood and difficult to investigate in experiments. In this paper, we explore the dynamics in a newly developed Xpoint scenario on the basic toroidal plasma device TORPEX and use it to validate plasma edge turbulence codes. Insi…

UKAEACCFECP(20)1222020
A thorough physics and engineering analysis of alternative divertor configurations is carried out by examining benefits and problems by comparing the baseline single null solution with a Snowflake, an X and a SuperX divertor. It is observed that alternative configurations can provide margin and resilience against large power fluctuations, but the…

UKAEACCFEPR(19)572019
By mixing elements with favourable nuclear activation properties to create highentropy alloys, it may be possible to create a material that can withstand a nuclear fusion environment while minimising the radioactive waste produced. Such a material could be used in the extreme thermal and irradiation conditions of a fusion blanket. A suite of previ…

UKAEACCFECP(18)102018
Recent experiments on MagnumPSI exposed a lithiumfilled heat pipe to a hydrogen plasma beam to demonstrate the potential of radiatively cooled, high temperature heat pipes as modular, replaceable plasma facing components. Monitoring the temperature distribution over the full 20cm length of the pipe was a crucial element of the experiment, requiri…

UKAEACCFEPR(19)032018
A new 1D divertor plasma code, SD1D, has been used to examine the role of recombination, radiation, and momentum exchange in detachment. Neither momentum or power losses by themselves are found to be sufficient to produce target ion flux rollover in detachment; radiative power losses are required to a) limit and reduce the ionization source and …

UKAEACCFEPR(18)492018
Predicting strains, stresses and swelling in power plant components exposed to irradiation directly from the observed or computed defect and dislocation microstructure is a fundamental problem of fusion power plant design that has so far eluded a practical solution. We develop a model, free from parameters not accessible to direct evaluation or obs…

2012
Generic materialsrelated problems foreseen in connection with the operation of a fusion power plant present a major challenge for the development of magnetically confined fusion as a commercial power generation option. In this review, we focus on the predictive capabilities of firstprinciplesbased atomistic models for radiation defects and phase…

2006
Toroidal flow velocities of the order of the local sound speed and poloidal flows exceeding theoretical predictions have been observed in several tokamaks. Steady toroidal and poloidal flow effects are studied using dissipationless singlefluid and twofluid theory, with electron inertia neglected in the latter case. An exact analytic treatment of …
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