UKAEA Journals

Triestino Minniti Frank Schoofs Llion Marc Evans Winfried Kockelmann J.H. You Heather Lewtas

The divertor target plates are the most exposed in-vessel components to high heat flux loads in a fusion reactor due to a combination of plasma bombardment, radiation and nuclear heating. Reliable exhaust systems of such a huge thermal power required a robust and durable divertor target with a sufficiently large heat removal capability and lifetime…

TJM Boyd DE Evans J Katzenstein

DE Evans MJ Forrest J Katzenstein

DE Evans MJ Forrest J Katzenstein

AW DeSilva DE Evans MJ Forrest

Llion Evans L. Margetts P.D. Lee C.A.M. Butler E. Surrey

Functional materials’ properties are influenced by microstructures which can be changed during manufacturing. Experimental characterisation is often time consuming and expensive. A technique is presented which digitises graphite foam via X-ray tomography and converts it into image-based models to determine properties in silico. By simulating a la…

Llion Evans T. Minniti M. Fursdon M. Gorley T. Barrett F. Domptail E. Surrey W. Kockelmann A.v. Müller F. Escourbiac A. Durocher

Within a tokamak fusion energy device, the performance and lifespan of a divertor monoblock under high heat flux cycles is of particular interest. Key to this is the quality of manufacture, especially the material joining interfaces. Presented here is a comparative study between X-ray and neutron tomography to investigate the quality of manufacture…

L.M. Evans J.D. Arregui-Mena P. M. Mummery R. Akers E. Surrey A. Shterenlikht M. Broggi L. Margetts

The extreme environments found within the nuclear sector impose large safety factors on modelling analyses to ensure components operate in their desired manner. Improving analysis accuracy has clear value of increasing the design space that could lead to greater efficiency and reliability. Novel materials for new reactor designs often exhibit non-…

Ll.M. Evans L. Margetts V. Casalegno L.M. Lever J. Bushell T. Lowe A. Wallwork P. Young A. Lindemann M. Schmidt P.M. Mummery

The thermal performance of a carbon fibre composite-copper monoblock, a sub-component of a fusionreactor divertor, was investigated by finite element analysis. High-accuracy simulations were createdusing an emerging technique, image-based finite element modelling, which converts X-ray tomogra-phy data into micro-structurally faithful models, captur…

I.T. Chapman M. Becoulet T. Bird J. Canik M. Cianciosa W.A. Cooper T. Evans N. Ferraro C. Fuchs M. Gryaznevich Y. Gribov C. Ham J. Hanson G. Huijsmans A. Kirk S. Lazerson Y. Liang I. Lupelli R.A. Moyer C. Nührenberg F. Orain D. Orlov,

The three dimensional plasma boundary displacements induced by applied nonaxisymmetric magnetic perturbations have been measured in ASDEX Upgrade, DIII-D, JET, MAST and NSTX. The displacements arising from applied resonant magnetic perturbations (RMPs) are measured up to ±5% of the minor radius in present day machines. Good agreement can be found …