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

Oscillations of Electron Temperature and Their Interplay with MHD in the Presence of Internal Transport Barriers on TCV

Timothy Goodman, Antoine Pochelon, Olivier Sauter, Henri Weisen, Stefano Coda, Igor Klimanov, Emiliano Fable

2006

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

ITER und der Weg zur Nutzung der Fusionsenergie

Henri Weisen

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

Peaked density profiles in low collisionality H-modes in JET, ASDEX Upgrade and TCV

Henri Weisen

2006

Quasi-Vertical Launch Third Harmonic Electron Cyclotron Resonance Heating of H-mode on TCV

Gilles Arnoux, Stefano Alberti, Yves Martin, Richard Pitts, Olivier Sauter, Henri Weisen, Andrea Scarabosio, Laurie Porte, Yann Camenen, Alessandro Bortolon, Barbora Bruant Gulejová, Mikhail Maslov

2006

10-channel far-infrared polarimeter for the tokamak configuration variable

Patrick Blanchard, Roland Behn, Henri Weisen

A new far-infrared polarimeter diagnostic for the tokamak a configuration variable (TCV) is under construction at CRPP. It uses two FIR lasers at 432.5 mu m, optically pumped by a 120 W continuous wave CO2 laser. The two FIR cavities will be detuned such t ...

2006

Studies of high frequency hot ion instabilities by means of correlation ECE on Tore Supra

Timothy Goodman, Henri Weisen

High frequency (> 100 kHz) modes have been observed for the first time in combined LHCD and ICR-heated minority H (D) plasmas on Tore Supra by means of a correlation ECE diagnostic and by fluctuation reflectometers. These modes have been identified as the ...

2006

Determination of the Radial Profile of Hydrogen Isotope Composition in TCV plasmas

Basil Duval, Henri Weisen, Christian Schlatter, Alexander Karpushov

2005

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

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

2005

Overview of transport, fast particle and heating and current drive physics using tritium in JET plasmas

Henri Weisen

Results are presented from the JET Trace Tritium Experimental (TTE) campaign using minority tritium (T) plasmas (n(T)/n(D) < 3%). Thermal tritium particle transport coefficients (D-T, nu(T)) are found to exceed neo-classical values in all regimes, except i ...

IOP Publishing Ltd2005

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