Impurity transport in tokamak plasmas, theory, modelling and comparison with experiments

C Angioni - Plasma Physics and Controlled Fusion, 2021 - iopscience.iop.org
In this paper, the theory of collisional and turbulent transport of impurities in tokamak
plasmas is reviewed. The results are presented with the aim of providing at the same time a …

Plasma performance and operational space without ELMs in DIII-D

C Paz-Soldan, DIII-D Team - Plasma Physics and Controlled …, 2021 - iopscience.iop.org
Abstract A database of DIII-D plasmas without edge-localized modes (ELMs) compares the
operating space and plasma performance of stationary no-ELM regimes found in …

Experimental conditions to suppress edge localised modes by magnetic perturbations in the ASDEX Upgrade tokamak

W Suttrop, A Kirk, V Bobkov, M Cavedon… - Nuclear …, 2018 - iopscience.iop.org
Access conditions for full suppression of edge localised modes (ELMs) by magnetic
perturbations (MP) in low density high confinement mode (H-mode) plasmas are studied in …

H-mode grade confinement in L-mode edge plasmas at negative triangularity on DIII-D

A Marinoni, ME Austin, AW Hyatt, ML Walker… - Physics of …, 2019 - pubs.aip.org
Plasmas with a negative triangularity shape have been created on the DIII-D tokamak that,
despite maintaining standard L-mode edge radial profiles, reach volume averaged pressure …

Prospects of core–edge integrated no-ELM and small-ELM scenarios for future fusion devices

E Viezzer, ME Austin, M Bernert, KH Burrell… - Nuclear Materials and …, 2023 - Elsevier
One of our grand challenges towards fusion energy is the achievement of a high-
performance plasma core coupled to a boundary solution. The high confinement mode (H …

Discovery of stationary operation of quiescent H-mode plasmas with net-zero neutral beam injection torque and high energy confinement on DIII-D

KH Burrell, K Barada, X Chen, AM Garofalo… - Physics of …, 2016 - pubs.aip.org
Recent experiments in DIII-D [JL Luxon et al., in Plasma Physics and Controlled Nuclear
Fusion Research 1996 (International Atomic Energy Agency, Vienna, 1987), Vol. I, p. 159] …

Stationary QH-mode plasmas with high and wide pedestal at low rotation on DIII-D

X Chen, KH Burrell, TH Osborne, WM Solomon… - Nuclear …, 2016 - iopscience.iop.org
A stationary, quiescent H-mode (QH-mode) regime with a wide pedestal and improved
confinement at low rotation has been discovered on DIII-D with reactor relevant edge …

Rotational shear effects on edge harmonic oscillations in DIII-D quiescent H-mode discharges

X Chen, KH Burrell, NM Ferraro, TH Osborne… - Nuclear …, 2016 - iopscience.iop.org
In the quiescent H-mode (QH-mode) regime, edge harmonic oscillations (EHOs) play an
important role in avoiding transient edge localized mode (ELM) power fluxes by providing …

Grassy-ELM regime with edge resonant magnetic perturbations in fully noninductive plasmas in the DIII-D tokamaka

R Nazikian, CC Petty, A Bortolon, X Chen… - Nuclear …, 2018 - iopscience.iop.org
Resonant magnetic perturbations (n= 3 RMPs) are used to suppress large amplitude ELMs
and mitigate naturally occurring'grassy'-ELMs in DIII-D plasmas relevant to the ITER steady …

Inference of experimental radial impurity transport on Alcator C-Mod: Bayesian parameter estimation and model selection

F Sciortino, NT Howard, ES Marmar, T Odstrcil… - Nuclear …, 2020 - iopscience.iop.org
We present a fully Bayesian approach for the inference of radial profiles of impurity transport
coefficients and compare its results to neoclassical, gyrofluid and gyrokinetic modeling …