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 …

Internal transport barrier in tokamak and helical plasmas

K Ida, T Fujita - Plasma Physics and Controlled Fusion, 2018 - iopscience.iop.org
The differences and similarities between the internal transport barriers (ITBs) of tokamak and
helical plasmas are reviewed. By comparing the characteristics of the ITBs in tokamak and …

Metal impurity transport control in JET H-mode plasmas with central ion cyclotron radiofrequency power injection

M Valisa, L Carraro, I Predebon, ME Puiatti… - Nuclear …, 2011 - iopscience.iop.org
The scan of ion cyclotron resonant heating (ICRH) power has been used to systematically
study the pump out effect of central electron heating on impurities such as Ni and Mo in H …

Quantitative comparison of experimental impurity transport with nonlinear gyrokinetic simulation in an Alcator C-Mod L-mode plasma

NT Howard, M Greenwald, DR Mikkelsen… - Nuclear …, 2012 - iopscience.iop.org
Nonlinear gyrokinetic simulations of impurity transport are compared to experimental
impurity transport for the first time. The GYRO code (Candy and Waltz 2003 J. Comput. Phys …

Peaking and hollowness of low-Z impurity profiles: an interplay between ITG and TEM induced turbulent transport

DI Palade - Nuclear Fusion, 2023 - iopscience.iop.org
The transport of low-Z impurities in fusion plasmas is dominated, in many regimes of interest,
by ion temperature gradient (ITG) and trapped electron mode (TEM) turbulence. We use a …

Understanding core heavy impurity transport in a hybrid discharge on EAST

S Shi, J Chen, C Bourdelle, X Jian, T Odstrčil… - Nuclear …, 2022 - iopscience.iop.org
The behavior of heavy/high-Z impurity tungsten (W) in the core of hybrid (high normalized
beta β N plasmas) scenario on EAST with international thermonuclear experimental reactor …

Control of core argon impurity profile by ECH in KSTAR L-mode plasmas

J Hong, SH Lee, J Kim, CR Seon, SG Lee… - Nuclear …, 2015 - iopscience.iop.org
Experiments on trace argon impurity transport in L-mode discharges were performed on
Korea superconducting tokamak advanced research (KSTAR) with electron cyclotron …

Natural poloidal asymmetry and neoclassical transport of impurities in tokamak plasmas

P Maget, J Frank, T Nicolas, O Agullo… - Plasma Physics and …, 2019 - iopscience.iop.org
The neoclassical transport of impurities is investigated for a plasma without toroidal rotation
nor anisotropic ion temperature. It is shown that a natural poloidal asymmetry of the impurity …

Understanding core tungsten (W) transport and control in an improved high-performance fully non-inductive discharge on EAST

S Shi, J Chen, C Bourdelle, X Jian, T Odstrčil… - Nuclear …, 2022 - iopscience.iop.org
The behavior of heavy/high-Z impurity tungsten (W) in an improved high-performance fully
non-inductive discharge on EAST with ITER-like divertor (ILD) is analyzed. It is found that W …

Study of impurity effects on CFETR steady-state scenario by self-consistent integrated modeling

N Shi, VS Chan, X Jian, G Li, J Chen, X Gao… - Nuclear …, 2017 - iopscience.iop.org
Impurity effects on fusion performance of China fusion engineering test reactor (CFETR) due
to extrinsic seeding are investigated. An integrated 1.5 D modeling workflow evolves plasma …