M. Christensen E. Wimmer M.R. Gilbert C. Geller B. Dron D. Nguyen-Manh
Atomistic simulations using ab initio density functional theory and machine-learned potentials have been employed to map the structural, thermodynamic, and kinetic properties of the T-WOx system (x = 0 to 3). The simulations reveal that the T permeability is low in WO2 , intermediate in W, and relatively high in WO
Rory Spencer Lloyd Fletcher Mike Gorley Cory Hamelin Allan Harte
Constitutive behaviour of fusion-relevant steels in the post-necking regime is necessary for detailed design of future fusion device components. A Finite Element Model Updating (FEMU) procedure using Digital Image Correlation (DIC), a simulated DIC filter and novel constitutive law was developed. The effects of the DIC process and experimental nois…
PreprintK. K. KIROV F. AURIEMMA P. J. BONOFIGLO C. D. CHALLIS E. DE LA LUNA J. ERIKSSON D. GALLART J. GARCIA M. GORELENKOVA J. HOBIRK P. JACQUET A. KAPPATOU Y. KAZAKOV D. KEELING D. KING V. KIPTILY E. LERCHE C. MAGGI J. MAILLOUX M. MASLOV M. MANTSINEN P. MANTICA S. MENMUIR R. SHARMA P. SIREN Z. STANCAR D. VAN EESTER JET CONTRIBUTORS
This work studies the influence of RF waves in ICRH range of frequency on fusion alphas during recent JET D-T campaign. Fusion alphas from D-T reactions are born with energies of about 3.5MeV and therefore have significant Doppler shift enabling synergistic interaction between them and RF waves at broad range of frequencies including the ones fo…
PreprintNousheen Nawal Hanni Lux Member IEEE Rhian Chapman James R. Cowan Member APM
Being a novel technology, estimating costs for fusion power plants comes with large uncertainties. Cost uncertainties in prototypes arise from various sources and reduce with programme maturity (including the selection of a site), technical and design maturity, maturity of the commercial strategy (e.g., make vs. buy decisions, partnering de…
PreprintP Methven
This paper sets the context for those that follow in this Special Edition by describing why STEP (Spherical Tokamak for Energy Production) has been launched, what it aims to achieve (benefits) and, principally, how the whole programme will be delivered (strategy). The paper draws on work on major project delivery and organisation design and ap…
PreprintDaniel R. Mason Duc Nguyen-Manh Victor W. Lindblad Fredric G. Granberg Mikhail Yu. Lavrentiev
We describe the parameterization of a tungsten-hydrogen empirical potential designed for use with large-scale molecular dynamics simulations of highly irradiated tungsten containing hydrogen isotope atoms, and report test results. Particular attention has been paid to getting good elastic properties, including the relaxation volumes of small def…
PublishedL. Reali M.R. Gilbert M. Boleininger S.L. Dudarev
Effects of neutron irradiation on materials are often interpreted in terms of atomic recoils, initiated by neutron impacts and producing crystal lattice defects. We find that, in addition, there is a remarkable two-step process, strongly pronounced in heavy elements, involving the generation of energetic γ-photons in non-elastic collisions of n…
PublishedC.A. Middleton K. Amjad R.J. Greene E. Hack L. Harris A. Kupferschmid P.R. Lambert E.A. Patterson
A small, novel, integrated SHM system has been deployed during full-scale testing of a wing fatigue test and a fuselage pressurisation test. Complementary NDE measurement techniques were combined, with inputs from visible and infrared optical sensors, as well as resistance strain gauges. Sensor unitswere deployed at regions of interest and int…
PreprintF.Eriksson E.Tholerus G.Corrigan Y.Baranov X.Bonnin D.Farina L.Figini L.Garzotti S.H.Kim F.Koechl A.Loarte E.Militello Asp C.Olde V.Parail S.D.Pinches A.Polevoi P.Strand
To design a safe termination scenario for a burning ITER plasma is a challenge that requires extensive core plasma and divertor modelling. The presented work consists of coupled core/edge/SOL/divertor simulations, performed with the JINTRAC code, studying the Q=10 flat-top phase and exit phase of the ITER 15MA/5.3T DT scenario. The modelling uti…
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