B D Dudson J Allen T Body B Chapman C Lau L Townley D Moulton J Harrison B Lipschultz
A new 1D divertor plasma code, SD1D, has been used to examine the role of recombination, radiation, and momentum exchange in detachment. Neither momentum or power losses by themselves are found to be sufficient to produce target ion flux rollover in detachment; radiative power losses are required to a) limit and reduce the ionization source and …
Preprint PublishedJordan Cavalier Nicolas Lemoine Frederic Brochard Vladimir Weinzettl Jakub Seidl Scott Silburn Patrick Tamain Renaud Dejarnac Jiri Adamek Radomir Panek
Following the lead of [Nguyen Van Yen Nucl. Fus. 52 (2012) 013005 (11pp)], this article tackles the problem of tomographic inversion with one camera assuming a constant emissivity of light along the magnetic field lines. In this way, the 3D problem reduces to 2D by helical symmetry, allowing for the reconstruction of any poloidal plane in the …
Preprint PublishedChris Hardie Andrew J. London Joven J. H. Lim Rob Bamber Tonci Tadic Marin Vuksic Stjepko Fazinic
The effects of radiation damage on materials are strongly dependant on temperature, making it arguably the most significant parameter of concern in nuclear engineering. Owing to the challenges and expense of irradiating and testing materials, material property data is often limited to few irradiation conditions and material variants. A new techniqu…
Preprint PublishedErmile Gaganidze Ferenc Gillemot Ildiko Szenthe Mike Gorley Michael Rieth Eberhard Diegele
The current paper reports the work of the EUROfusion Material Database and Handbook group within the MAT-EDDI (Materials – Engineering Data and Design Integration) subproject of the EUROfusion consortium. A special emphasis is put on the building of the EUROfusion RAFM steel database accounting around 3000 raw materials data records. A dat…
Preprint PublishedA. Fernandez-Caballero M. Fedorov J.S. Wrobel P.M. Mummery D. Nguyen
Configuration entropy is believed to stabilize disordered solid solution phases in multicomponent systems at elevated temperatures over intermetallic compounds by lowering the Gibbs free energy. Traditionally the …
Preprint PublishedJames Harrison C. Theiler B. Lipschultz A. Perek R. Maurizio B. Linehan W. A. J. Vijvers B. P. Duval B. Labit U. Sheikh K. Verhaegh S. Henderson A. Karpushov O. Fevrier H. de Oliviera H. Reimerdes A. Merle X. Feng the TCV team and the EUROfusion MST1 team
Recent experiments on TCV have made significant progress toward partial detachment of the outer divertor in neutral beam heated H-mode plasmas. The heating power required to enter H-mode was measured in a range of divertor configurations, finding that, in the vicinity of the PL-H/ne curve, the threshold power is largely independent of the poloidal …
Preprint PublishedKrassimir Kirov Yu. Baranov I.S. Carvalho C.D. Challis J. Eriksson D. Frigione L. Garzotti J. Graves P. Jacquet D.L. Keeling E. Lerche P.J. Lomas C. Lowry M. Mantsinen F. Rimini and JET Contributors
Fast ion synergistic effects were studied by predictive modelling of JET best performing pulses for various levels of Neutral Beam (NB) and Radio Frequency (RF) power. Calculated DD neutron yields were analysed with the intention of separating the impact of sheer synergistic effects due to changes in fast ion (FI) distribution function (DF) from su…
Preprint PublishedDavid Andres Roberto Lacalle Sergio Cicero Jose A. Alvarez
The Master Curve approach allows the full characterisation of the ductile to brittle transition region (DBTR) of ferritic steels to be performed with a reduced number of tests. In this paper, the approach has been combined with the application of the small punch (SP) tests. Modified SP specimens have been successfully employed to estimate the fract…
Preprint PublishedLee Packer P. Batistoni S. C. Bradnam S. Conroy Z. Ghani M. R. Gilbert E. Laszynska I. Lengar C.R.Nobs M. Pillon S. Popovichev P. Raj I.E. Stamatelatos T. Vasilopoulou A. Wojcik-Gargula R. Worrall JET Contributors
This paper reports new activities conducted as part of the JET technology programme under the WP-JET3 ACT sub-project collaboration. The aim of the sub-project is to take advantage of the significant 14 MeV neutron fluence expected during JET operations to irradiate samples of materials that will used in the manufacturing of main ITER tokamak compo…
Preprint Publishedyiqiang wang Mike Gorley Saurabh Kabra Elizabeth Surrey
Eurofer 97 is the main structural material targeted for the DEMO reactors which will be operated under magnetic fields. It is therefore imperative to understand the effect of magnetic fields on the mechanical properties of the Eurofer 97. Here we preform 30 uniaxial tensile tests with and without a 1.5 T magnetic field at room temperature. The stat…
Preprint Published