UKAEA Papers

"A wall-aligned grid generator for 3D non-linear simulations of MHD instabilities in tokamak plasmas"

• S.Pamela
• G.Huijsmans
• A.J.Thornton
• A.Kirk
• S.F.Smith
• M.Hoelzl
• T.Eich
• JET Contributors
• the MAST Team
• the JOREK Team

Typically applied to non-linear simulations of MHD instabilities relevant to magnetically confined fusion, the JOREK code was originally developed with a 2D grid composed of isoparametric bi-cubic Bezier finite elements, that are aligned to the magnetic equilibrium of tokamak plasmas. To improve the applicability of these simulations, the grid-gene…

"Numerical Simulations of Edge Localised Modes in MAST-U Plasmas"

• Siobhan Smith
• Stanislas Pamela
• Howard Wilson
• Guido Huijsmans

Edge localised modes (ELMs) are magneto-hydrodynamic (MHD) instabilities that drive filamentary plasma eruptions in high confinement tokamak discharges [1]. Gaining an improved understanding of ELMs is important [2]; in future fusion reactors such as ITER, ELM heat fluxes will need to be limited to ensure durability of divertor materials [3]. A …

"A measurement of the cross section for production of He ions by electron impact excitation of ground state helium ions"

• DF Dance
• MFA Harrison
• ACH Smith

"Grazing incidence spectra of highly ionized oxygen in a theta-pinch"

• NJ Peacock

"Grazing incidence spectra of highly-ionized atoms from laboratory plasmas"

• BC Fawcett
• AH Gabriel
• BB Jones
• NJ Peacock

"Vacuum ultra-violet radiation from a magnetically compressed plasma"

• AH Gabriel
• GBF Niblett
• NJ Peacock

"Simulations of edge localised mode instabilities in MAST-U Super-X tokamak plasmas"

• S.F. Smith
• S.J.P. Pamela
• A. Fil
• M. Hoelzl
• G.T.A. Huijsmans
• A. Kirk
• D. Moulton
• O. Myatra
• A.J. Thornton
• H.R. Wilson

ELM simulations for the MAST-U Super-X tokamak have been obtained, using the JOREK code. The JOREK visco-resistive MHD model has been used to obtain comparisons of divertor configurations. The simulations show a factor 10 decrease in the peak heat flux to the outer target of the Super-X in comparison to a conventional divertor configuration. A roll…

"ELM burn-through predictions for MAST-U Super-X plasmas"

• S.F. Smith
• S.J.P. Pamela
• M. Hölzl
• G.T.A. Huijsmans
• A. Kirk
• D. Moulton
• A.J. Thornton
• H.R. Wilson

During edge localised modes (ELMs) high heat fluxes are incident on divertor targets, which future fusion devices will not withstand [1]. A solution to reduce the heat fluxes could be the new Super-X divertor, which will be tested on the MAST-U tokamak. The divertor has an increased connection length, magnetic flux expansion and is designed to reta…

"Novel Methods for Recording Stress-Strain Curves in Proton Irradiated Material"

• Albert D. Smith
• Jack M. Donoghue
• Alistair J.W. Garner
• David Lunt
• Allan Harte
• Keith Wilford
• Philip J. Withers
• Michael Preuss

Proton irradiation is often used as a proxy for neutron irradiation but the irradiated layer is typically

"DEVELOPING DEMO DESIGN CRITERIA"

• M. Kalsey
• M. Gorley
• P. Smith
• D. Samuel

There is currently a European collaboration that is working towards developing a Demonstration Fusion Reactor (European DEMO). This project is currently defining the high level plant architecture of a DEMO reactor, whilst developing conceptual design solutions for technically challenging systems. One such area of development is the design of Pla…