Frank Schoofs Mike Gorley
A comprehensive, standardised approach to high heat flux testing of materials is proposed, which allows for standardised data capture and comparison of measurements across global testing sites and setups. A meta-analysis of data for tungsten, with data re-captured in that format, highlights interesting trends with respect to appropriate damage metr…
Preprint PurchaseGuoliang Xia Yueqiang Liu C. J. Ham Shuo Wang Li Li G. Y. Zheng J. X. Li N. Zhang X. Bai G. Q. Dong the HL-2M team
Effects of toroidal plasma flow, magnetic drift kinetic damping as well as feedback control, on the resistive wall mode instability in HL-2M tokamak are numerically investigated, using the linear stability codes MARS-F/K (Liu Y Q et al 2000 Phys. Plasmas 7 3681, Liu Y Q et al 2008 Phys. Plasmas 15…
Preprint PublishedMatti Coleman S. McIntosh
The European DEMO fusion power reactor (EU-DEMO) is still in the pre-conceptual design phase. The design strategy for the EU-DEMO hinges on investigating multiple reactor designs and technologies in parallel, progressively down-selecting these in the mid-2020’s, in preparation for the conceptual design phase. The present implementation of the str…
Preprint PublishedMarco Cecconello A. Sperduti I. Fitzgerald S. Conroy S. J. Holm M. Weiszflog
A Neutron Camera (NC) was used on the Mega Ampere Spherical Tokamak (MAST) to measure the DD neutron emissivity along four collimated lines of sight, two on-axis and two off-axis, all viewing the plasma in tangential direction. The encouraging results obtained suggested that an upgraded NC for MAST-U would provide fundamental information for the st…
Preprint PublishedAlessandro Geraldini Felix Parra Fulvio Militello
Using a kinetic model for the ions and adiabatic electrons, we solve a steady state, electron-repelling magnetic presheath in which a uniform magnetic field makes a small angle α
Preprint Publishedyiqiang wang Bin Liu Kun Yan Minshi Wang Saurabh Kabra Yu-Lung Chiu David Dye Peter D. Lee Yong Liu Biao Cai
The deformation responses at 77 and 293 K of a FeCoNiCr high-entropy alloy, produced by a powder metallurgy route, are investigated using in situ neutron diffraction and correlative transmission electron microscopy. The strength and ductility of the alloy are significant improved at cryogenic temperatures. The true ultimate tensile strengt…
Preprint Publishedyiqiang wang S. Kabra S. Y. Zhang C. E. Truman D. J. Smith
A long-term high-temperature testing stress rig has been designed and fabricated for performing in situ neutron diffraction tests at the ENGIN-X beamline, ISIS facility in the UK. It is capable of subjecting metals to high temperatures up to 800°C and uniaxial loading under different boundary conditions including constant load, constant s…
Preprint PublishedO. Linder J. Citrin G.M.D. Hogeweij C. Angioni C. Bourdelle F.J. Casson E. Fable A. Ho F. Koechl M. Sertoli the EUROfusion MST1 Team the ASDEX Upgrade Team
Neoclassical and turbulent heavy impurity transport in tokamak core plasmas are determined by main ion temperature, density and toroidal rotation profiles. Thus, in order to reproduce experimental behaviour of W accumulation, integrated modelling of main ion heat and particle transport is a vital prerequisite. For the first time, the quasilinear …
Preprint PublishedD. A. Ryan Y. Q. Liu A. Kirk W. Suttrop B. Dudson M. Dunne M. Willensdorfer the ASDEX-Upgrade team and the EUROfusion MST1 team
It has been previously demonstrated in (Li et al 2016 Nuclear Fusion 56 126007) that the optimum upper/lower coil phase shift ΔΦopt for alignment of RMP coils for ELM mitigation depends sensitively on q95, and other equilibrium plasma parameters. Therefore, ΔΦopt is expected to vary widely during the current ramp …
Preprint PublishedS. L. Dudarev Pui-Wai Ma
Density functional theory (DFT) calculations show that self-interstitial atom defects in nonmagnetic body-centred cubic (bcc) metals adopt strongly anisotropic configurations, elongated in the h111i direction1–4. Elastic distortions, associated with such anisotropic defect configurations, appear similar to the distortions around small prismatic d…
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