Publications de Alexey Zabolotskiy

Particle and impurity transport in the Axial Symmetric Divertor Experiment Upgrade and the Joint European Torus, experimental observations and theoretical understanding

Henri Weisen, Alexey Zabolotskiy, Mikhail Maslov

Experimental observations on core particle and impurity transport from the Axial Symmetric Divertor Experiment Upgrade [O. Gruber, H.-S. Bosch, S. Gunter , Nucl Fusion 39, 1321 (1999)] and the Joint European Torus [J. Pamela, E. R. Solano, and JET EFDA Con ...

2007

Particle and impurity transport in electron-heated discharges in TCV

Basil Duval, Olivier Sauter, Henri Weisen, Christian Schlatter, Alexey Zabolotskiy, Alexander Karpushov, Emiliano Fable, Alessandro Bortolon, Mikhail Maslov

2006

Particle and Impurity Transport in Electron-Heated Discharges in TCV

Basil Duval, Olivier Sauter, Henri Weisen, Christian Schlatter, Alexey Zabolotskiy, Alexander Karpushov, Emiliano Fable, Alessandro Bortolon, Mikhail Maslov

2006

Particle and impurity transport in ASDEX Upgrade and JET, experimental observations and theoretical understanding

Henri Weisen, Alexey Zabolotskiy, Mikhail Maslov

2006

Density peakign in TCV and JET H-modes

Henri Weisen, Alexey Zabolotskiy, Laurie Porte, Mikhail Maslov

2006

Carbon transport in TCV

Basil Duval, Henri Weisen, Alexey Zabolotskiy, Alexander Karpushov, Alessandro Bortolon

2006

Density peaking in TCV and JET H-modes

Henri Weisen, Alexey Zabolotskiy, Laurie Porte, Mikhail Maslov

2006

Scaling of density peaking in JET H-modes and implications for ITER

Henri Weisen, Alexey Zabolotskiy, Mikhail Maslov

Results from an extensive profile database analysis of JET density profiles in H-mode show that the density peaking factor n(e0)/ < n(e) > in JET H-modes increases as the effective collisionality v(eff) congruent to 10(-14) RZ(eff)n(e)/T-e(2) drops from si ...

2006

Influence of particle sources on electron density peaking in TCV and JET

Henri Weisen, Alexey Zabolotskiy, Alexander Karpushov

Calculations of the particle flux caused by neutrals originating from the edge are performed for TCV and JET using the one-dimensional kinetic transport code Kn1D. The analysis, confirmed by experimental evidence, shows that for TCV and JET edge fuelling a ...

IOP Publishing Ltd2006

Density profile peaking in the presence of ECRH heating in TCV

Henri Weisen, Alexey Zabolotskiy

Experimental observations in stationary ECRH discharges in TCV show that additional heating has a strong effect on the electron density profile. In the absence of MHD activity or strong internal transport barriers, additional electron heating generally lea ...

2006

Inward thermodiffusive particle pinch in electron internal transport barriers in TCV

Timothy Goodman, Olivier Sauter, Henri Weisen, Stefano Coda, Alexey Zabolotskiy, Emiliano Fable, Costanza Zucca

Electron internal transport barriers (eITBs) are obtained in TCV with different heating and current drive schemes. They are sustained in steady-state conditions for several energy confinement and current redistribution times. In these scenarios, the densit ...

2006

Carbon transport in TCV

Basil Duval, Henri Weisen, Alexey Zabolotskiy, Alexander Karpushov, Alessandro Bortolon

2006

Density behavior during electron internal transport barriers in TCV fully non inductive discharges

Olivier Sauter, Henri Weisen, Alexey Zabolotskiy, Emiliano Fable, Alessandro Marinoni

2005

A new method for the inversion of interferometry data using basis functions derived from singular value decomposition of local measurements in tokamak plasmas

Roland Behn, Henri Weisen, Ivo Furno, Alexey Zabolotskiy, Emiliano Fable

A novel method for inverting time-resolved line-integrated interferometric plasma density measurements is described. The method uses singular value decomposition of local density profiles from Thomson scattering measurements obtained at low sampling rates ...

2005

Collisionality and shear dependences of density peaking in JET and extrapolation to ITER

Henri Weisen, Ivo Furno, Alexey Zabolotskiy

Results from an extensive database analysis of JET density profiles in stationary conditions show that the density peaking factor n(e0)/< n(e)> in JET H modes increases from near 1.2 at high collisionality to around 1.5 as the plasma collisionality decreas ...

IOP Publishing Ltd2005

Scaling of density peaking in JET H-modes

Henri Weisen, Alexey Zabolotskiy, Mikhail Maslov

2005

Safety factor profile requirements for electron ITB formation in TCV

Gilles Arnoux, Stefano Alberti, Kurt Appert, Roland Behn, René Chavan, Basil Duval, Damien Fasel, Ambrogio Fasoli, Timothy Goodman, Pierre-François Isoz, Pierre Lavanchy, Jonathan Bryan Lister, Xavier Llobet, Jean-Claude Magnin, Blaise Marlétaz, Philippe Marmillod, Yves Martin, Jean-Marc Moret, Albert Perez, Richard Pitts, Antoine Pochelon, Olivier Sauter, Markus Siegrist, Gilbert Tonetti, Minh Quang Tran, Henri Weisen, Jean-Philippe Hogge, Stefano Coda, Christian Schlatter, Andrei Martynov, Petri Nikkola, Alberto Bottino, Karin Schombourg, Alexey Zabolotskiy, Ugo Siravo, Marco Wischmeier, Jonathan Rossel, Pierre Etienne, Igor Klimanov, Jan Horacek, Andrea Scarabosio, Alexander Karpushov, , , , , , , , , , , ,

Particle transport in tokamak plasmas

Alexey Zabolotskiy

The transport of particles in magnetically confined plasmas is of great importance for the development of fusion energy. It will determine techniques for fuelling, for controlling impurity concentrations and for the removal of the alpha particles produced ...

EPFL2005