HJ. Sun T Wauters PJ. Lomas E. Lerche I. Monakhov C. Noble PC. De Vries K. Kirov I Coffey P Siren B Thomas A Boboc K Palamartchouk G Szepesi E. Joffrin B. Labit DC. McDonald JET Contributors
Ion Cyclotron wave (IC) assisted breakdown would be important for reducing risks to plasma initiation during the ITER pre-fusion operation phase under difficult vessel conditions. Hence, studies were performed at JET, at ITER relevant loop electric field — and in a regime, and , where plasma breakdown had not previously been achieved on JE…
Preprint PublishedMatthew J. Lloyd Jack Haley Bethany Jim Robert Abernethy Mark R. Gilbert Enrique Martinez Osman El-Atwani Duc Nguyen-Manh Michael P. Moody Paul A. J, Bagot David E. J. Armstrong
In this study, we compare the formation of radiation induced defects in W and W-Re-Os alloys, exposed to an equivalent dose of self-ion and neutron irradiation. Transmutation reactions in the neutron irradiated material are simulated in the ion implanted materials by alloying with representative quantities of Re and Os (1.4 and 0.1 at.% respecti…
PublishedDamian Sobieraj Jan S. Wróbel Mark R. Gilbert Andrey Litnovsky Krzysztof J. Kurzydłowski Duc Nguyen-Manh
Spinodal phase separation in SMART materials based on binary W-Cr with alloying 1 elements Y and Zr is systematically investigated by a combination of Density Functional Theory with Cluster Expansion Hamiltonian and large-scale Monte Carlo simulations with thermodynamic integration. Comparing alloying of Zr with those from Y, it is shown that there…
PublishedI. Casiraghi P. Mantica F. Koechl R. Ambrosino B. Baiocchi A. Castaldo J. Citrin M. Dicorato L. Frassinetti A. Mariani P. Vincenzi P. Agostinetti L. Aucone L. Balbinot S. Ceccuzzi L. Figini G. Granucci P. Innocente T. Johnson H. Nyström M. Valisa
An intensive integrated modelling work of main scenarios of the new tokamak DTT (Divertor Tokamak Test facility) with the Single Null divertor configuration has been performed using first-principle quasi-linear transport models, in support to the design of the device and to the definition of its scientific work-programme. First results of this i…
PublishedPrzemyslaw Klups Daniel Haley Andrew London Hazel Gardner James Famelton Benjamin M. Jenkins Paul A.J. Bagot Michael P. Moody.
One of the main capabilities of Atom Probe Tomography (APT) is the ability to not only identify but characterise early stages of precipitation at scales that are not achievable by other techniques. The most popular method, based on the Density-Based Spatial Clustering of Applications with Noise (DBSCAN), is used extensively in many branches of r…
PurchaseAndrew Ralph Warwick Rhys Thomas Max Boleininger Ömer Koç Gyula Zilahi Gabor Ribarik Zoltan Hegedues Ulrich Lienert Tamas Ungar Christopher Race Michael Preuss Philipp Frankel Sergei Lvovich Dudarev
Zirconium alloys are widely used as the fuel cladding material in pressurised water reactors where a significant population of defects and dislocations is produced by exposure to neutrons. We present and interpret synchrotron microbeam X-ray diffraction measurements of proton- irradiated Zircaloy-4, where we identify a transient peak and the sub…
PublishedWei Wang Ruiqiang Zhang Amir A Shirzardi Daniel S Balint Lee Aucott Jun Jiang
Thermally-induced cracking typically occurs during the cooling stage of various manufacturing processes, and is commonly seen in multiphase or the joints of dissimilar materials due to mismatch in their thermo-mechanical properties, such as thermal expansion, elastic-plastic deformation and, in some cases, phase transformation. However, the underly…
Preprint PublishedA. Quadling D. Bowden C. Hardie A. Vasanthakumaran
The STEP environment will include magnetic, thermal, mechanical and environmental loads far greater than those seen in the Joint European Torus campaigns of the past decade or currently contemplated for ITER. Greater still are the neutron peak dose rates of 10-6displacements per atom, per second, which in-vessel materials in STEP are …
PreprintN. Mantel D. Bowden S.S. Herashchenko M. Fursdon A. D. L. Hancock I.E. Garkusha J. Roberts V.A. Makhlai A. von Mueller T. R. Barrett J.-H. You
In the conceptual design of EU-DEMO, damage to plasma facing components under disruption events is planned to be mitigated by specific sacrificial limiter components. A new limiter concept has been proposed using lattice structures fabricated with tungsten powder by additive manufacturing techniques. The major potential benefits of using a latti…
PublishedH Meyer the STEP Team
The programme to design plasma scenarios for the Spherical Tokamak for Energy Production (STEP), a reactor concept aiming at net electricity production, seeks to exploit the inherent advantages of the spherical tokamak (ST) while making conservative assumptions about plasma performance. This approach is motivated by the large gap between present-da…
Preprint