Elements of H-mode pedestal structure

RJ Groebner, S Saarelma - Plasma Physics and Controlled …, 2023 - iopscience.iop.org
This paper reviews current understanding of key physics elements that control the H-mode
pedestal structure, which exists at the boundary of magnetically confined plasmas. The …

W transport and accumulation control in the termination phase of JET H-mode discharges and implications for ITER

F Köchl, A Loarte, E De La Luna, V Parail… - Plasma Physics and …, 2018 - iopscience.iop.org
Tokamak operation with W PFCs is associated with specific challenges for impurity control,
which may be particularly demanding in the transition from stationary H-mode to L-mode. To …

A geometric model of ion orbit loss under the influence of a radial electric field

RW Brzozowski, F Jenko, R Bilato, M Cavedon… - Physics of …, 2019 - pubs.aip.org
A geometric approach is used to find the threshold energies for ion orbit loss in experimental
tokamak geometry, like that of ASDEX Upgrade. The effects of any pre-existing radial electric …

Effect of negative triangularity on the bulk ions co-current rotation caused by the ion orbit loss at the edge of the tokamak plasmas

R Wang, C Pan - Nuclear Fusion, 2022 - iopscience.iop.org
The ion orbit loss (IOL) can drive the bulk ions co-current rotation at the edge of the tokamak
plasmas. The effect of triangularity on the IOL is investigated by using an analytical tokamak …

Extended fluid transport theory in the tokamak plasma edge

WM Stacey - Nuclear Fusion, 2017 - iopscience.iop.org
Fluid theory expressions for the radial particle and energy fluxes and the radial distributions
of pressure and temperature in the edge plasma are derived from fundamental conservation …

[HTML][HTML] Calculation of the radial electric field from a modified Ohm's law

TM Wilks, WM Stacey, TE Evans - Physics of Plasmas, 2017 - pubs.aip.org
A modified Ohm's Law, derived from the conservation of deuterium and carbon ions and
electron momentum and the requirement for charge neutrality, yields an expression for the …

Application of Neural Ordinary Differential Equations for ITER Burning Plasma Dynamics

Z Liu, WM Stacey - arXiv preprint arXiv:2408.14404, 2024 - arxiv.org
The dynamics of burning plasmas in tokamaks are crucial for advancing controlled
thermonuclear fusion. This study introduces the NeuralPlasmaODE, a multi-region multi …

Experiment and simulation of ELM in NBI heated plasma on EAST tokamak

KN Geng, TF Tang, DF Kong, SB Zhang, T Zhang… - Nuclear …, 2021 - iopscience.iop.org
By scanning toroidal rotation with a combination of co-and counter-current direction neutral
beam injection (NBI) on the Experimental Advanced Superconducting Tokamak, it is found …

[HTML][HTML] Analysis of equilibrium and turbulent fluxes across the separatrix in a gyrokinetic simulation

I Keramidas Charidakos, JR Myra, S Parker, S Ku… - Physics of …, 2018 - pubs.aip.org
The SOL width is a parameter of paramount importance in modern tokamaks as it controls
the power density deposited at the divertor plates, critical for plasma-facing material …

A nodal model for tokamak burning plasma space-time dynamics

WM Stacey - Fusion Science and Technology, 2021 - Taylor & Francis
Fusion alpha heating introduces new phenomena into plasma dynamics and control. On the
worrisome side is the well-known fact that the σ υ fus≃ T ion 2 dependence of the …