UKAEA Papers

Showing 11 - 20 of 1892 UKAEA Paper Results
2022
UKAEA-CCFE-PR(22)13

A local flux expansion method has been proposed for estimating the strike point position for the advanced divertor configuration on MAST Upgrade tokamak. The paper discusses the application and assesses the performance of the technique on a long-legged divertor plasma configuration on an operating device – the DIII-D tokamak. A comparison of …

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The published version of this paper is currently under embargo and will be available on 07/03/2024
2022
UKAEA-CCFE-PR(22)12

In many fields of the natural sciences, from biology to physics, advanced data analysis tools are acquiring more and more importance to investigate difficult problems. A typical application is synchronization experiments, which involve coupled quantities, a “target” and a “driver”, with quasi-periodic behaviours. Unfortunately, in comple…

Preprint
2022
UKAEA-CCFE-PR(22)11

Solid titanium beryllide blocks will be used for neutron multiplication in the in the helium-cooled pebble bed (HCPB) blanket concept of EU DEMO. A combination of hot extrusion of Be-Ti powders and subsequent hot isostatic pressing (HIP) of the obtained Be-Ti composites has been proposed for manufacturing such blocks. This work is devoted to the st…

Preprint Published
2022
UKAEA-CCFE-PR(22)10

The EUROfusion materials research program for DEMO in-vessel components aligns with the European Fusion Roadmap and comprises the characterization and qualification of the in-vessel baseline materials EUROFER97, CuCrZr and tungsten, advanced structural and high heat flux materials developed for risk mitigation, as well as optical and dielectric fun…

Preprint Published
2022
UKAEA-RACE-PR(22)04

The nuclear industry has some of the most extreme environments in the world, with radiation levels and extremely harsh conditions restraining human access to many facilities. One method for enabling minimal human exposure to hazards under these conditions is through the use of gloveboxes which are sealed volumes with controlled access for perfor…

Preprint Published
2022
UKAEA-RACE-PR(22)02

In robotic teleoperation, the knowledge of the state of the remote environment in real-time is a paramount. Advances in the development of highly accurate 3D cameras able to provide high quality point clouds appear to be a feasible solution for generating live, up-to-date virtual environments. Unfortunately, the exceptional accuracy and high densit…

Preprint Published
2022
UKAEA-CCFE-PR(22)09

Experiments in ASDEX Upgrade (AUG) and JET with the ITER-like wall (JET-ILW) are performed to separate the pedestal and core contributions to confinement in H-modes with different main ion masses. A strong isotope mass dependence in the pedestal is found which is enhanced at high gas puffing. This is because the ELM type changes when going fro…

Preprint Published
2022
UKAEA-CCFE-PR(22)08

MAST-U has recently started operating with a Super-X divertor, designed to increase total flux expansion and neutral trapping, both predicted through simple analytic models and SOLPS calculations to reduce the plasma and impurity density detachment thresholds. In this study, utilising the SOLPS-ITER code, we are quantifying the possible gain allowe…

Preprint
2022
UKAEA-CCFE-PR(22)07

Self-ion irradiation of pure tungsten with 2 MeV W ions provides a way of simulating microstructures generated by neutron irradiation in tungsten components of a fusion reactor. Electron microscopy has been used to characterize defects formed in tungsten samples by ion irradiation and estimate their density and size distribution. Some of the sample…

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2022

Thermal evolution and high temperature annealing of dislocation microstructure of an irradiated metal, described by an ensemble of in…

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The published version of this paper is currently under embargo and will be available on 13/02/2024