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Impact of plasma triangularity and collisionality on electron heat transport in TCV L-mode plasmas
Related publications (81)
High density experiments in TCV ohmically heated and L-mode plasmas
Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Benoît Labit, Laurie Porte, Alexander Karpushov, Antoine Pochelon, Roland Behn
Recent experiments have been performed on the Tokamak a configuration variable (TCV) to investigate the confinement properties of high density plasmas and the mechanism behind the density limit. In a limiter configuration with plasma elongation kappa = 1.3 ...
Iop Publishing Ltd2015Trapped-Electron Runaway Effect
In a tokamak, trapped electrons subject to a strong electric field cannot run away immediately, because their parallel velocity does not increase over a bounce period. However, they do pinch toward the tokamak center. As they pinch toward the center, the t ...
Cambridge University Press2015Inboard and outboard radial electric field wells in the H- and I-mode pedestal of Alcator C-Mod and poloidal variations of impurity temperature
We present inboard (HFS) and outboard (LFS) radial electric field (Er) and impurity temperature (Tz) measurements in the I-mode and H-mode pedestal of Alcator C-Mod. These measurements reveal strong Er wells at the HFS and the LFS midplane in both regimes ...
International Atomic Energy Agency2014Collisions in Global Gyrokinetic Simulations of Tokamak Plasmas using the Delta-f Particle-In-Cell Approach
The present work takes place within the general context of research related to the development of nuclear fusion energy. More specifically, this thesis is mainly a numerical and physical contribution to the understanding of turbulence and associated transp ...
EPFL20133rd harmonic ECRH absorption enhancement by 2nd harmonic heating at the same frequency in a tokamak
Stefano Coda, Timothy Goodman, Joan Decker, Silvano Gnesin
The fundamental mechanisms responsible for the interplay and synergy between the absorption dynamics of extraordinary-mode electron cyclotron waves at two different harmonic resonances (the 2nd and 3rd) are investigated in the TCV tokamak. An enhanced 3rd ...
2012A new approach to plasma profile control in ITER
Jonathan Bryan Lister, Sun Hee Kim
Advanced tokamak operation in ITER, such as the steady-state and hybrid modes, requires an active realtime feedback control of plasma profiles to achieve the advanced regimes for sustained operation. In this work, we have explored a potentially robust cont ...
Elsevier Science Sa2012A potentially robust plasma profile control approach for ITER using real-time estimation of linearized profile response models
Jonathan Bryan Lister, Sun Hee Kim
An active plasma profile control approach for ITER, which is potentially robust by being tolerant to changing and uncertain physics, has been explored in this work, using a technique based on real-time estimation of linearized profile response models. The ...
2012Ubiquity of non-diffusive momentum transport in JET H-modes
Henri Weisen, Yann Camenen, Mikhail Maslov
A broad survey of the experimental database of neutral beam heated baseline H-modes and hybrid scenarios in the JET tokamak has established the ubiquity of non-diffusive momentum transport mechanisms in rotating plasmas. As a result of their presence, the ...
Int Atomic Energy Agency2012Identifying the role of non-adiabatic passing electrons in ITG/TEM microturbulence by comparing fully kinetic and hybrid electron simulations
Stephan Brunner, Julien Stanislas Pierre Dominski
The response of passing electrons in Ion Temperature Gradient (ITG) and Trapped Electron Mode (TEM) microinstability regimes is investigated in tokamak geometry making use of the flux-tube version of the gyrokinetic code GENE [Jenko et al. 2000 Phys. Plasm ...
IOP Publishing Ltd2012High Density Plasma Heating in the Tokamak à Configuration Variable
The Tokamak à Configuration Variable (TCV) is a medium size magnetic confinement thermonuclear fusion experiment designed for the study of the plasma performances as a function of its shape. It is equipped with a high power and highly flexible electron cyc ...
EPFL2011