20th European Fusion Theory Conference 2-5 October 2023, Padova - Italy

Session

Oral session 6 - Pedestal and PFCs

3 Oct 2023, 11:00

Sala Rossini (Caffè Pedrocchi)

Conveners

Oral session 6 - Pedestal and PFCs: O6

• Chair: Sarah Newton

22. Neoclassical transport in strong gradient regions (I.17)

Silvia Trinczek (Princeton University/Princeton Plasma Physics Laboratory)

03/10/2023, 11:00

Invited

We present a new model to describe neoclassical transport in strong gradient regions in tokamaks such as internal transport barriers and the pedestal [1]. Previous work on neoclassical transport across transport barriers assumed large density and potential gradients but a small temperature gradient [2], or neglected the gradient of the mean parallel flow [3]. Using a large aspect ratio and low...

20. Prediction of Electron Temperature Pedestals in the JET-ILW Database (O.7)

Leonard-Petru Turica (Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, OX13PU, UK, United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, OX14 3DB, UK, University College, Oxford, OX1 4BH, UK)

03/10/2023, 11:40

Oral

Making use of a large experimental database of pedestals of H-mode ELMy JET-ILW pulses [1], we propose several approaches to systematic prediction of the height of the electron-temperature pedestal and of the electron temperature at the top of the density pedestal, with the engineering parameters and the density profiles as inputs. Simulations of ETG turbulence in steep-gradient regions of the...

40. Characterizing Liquid Metal Performance in Tokamak Plasma-Facing Components Through Lorentz Force-Applied Turbulent Channel Flow and Stuart Number Analysis (O.8)

Atilla Altintas

03/10/2023, 12:05

Oral

Next-generation fusion reactors pose challenges for plasma-facing components (PFCs) made from solid materials due to the high heat and particle fluxes. To overcome these limitations, liquid-metal (LM) PFC concepts have been proposed recently, with electromagnetic restraint (Lorentz force) as a key mechanism to keep free-surface LM flows attached to reactor surfaces [1]. Therefore, the...