Publication

Control of sawteeth and triggering of NTMs with ion cyclotron resonance frequency waves in JET

Related publications (34)

Turbulent ion heating in TCV tokamak plasmas

The Tokamak à configuration variable (TCV) features the highest electron cyclotron wave power density available to resonantly heat (ECRH) the electrons and to drive noninductive currents in a fusion grade plasma (ECCD). In more than 15 years of exploitatio ...

EPFL2009

Electron Bernstein Wave Heating and Emission in the TCV Tokamak

Stefano Coda, Timothy Goodman, Laurie Porte, Antoine Pochelon, Yann Camenen, Loïc Curchod

Electron cyclotron resonance heating (ECRH) of high-density tokamak plasmas is limited because of reflections of the waves at so-called wave cutoffs. Electron Bernstein wave (EBW) heating (EBWH) via a double mode conversion process from ordinary (O)-mode, ...

American Nuclear Society2007

Current profile tailoring using localized electron cyclotron heating in highly elongated TCV plasmas

Olivier Sauter, Stefano Coda, Timothy Goodman, Stefano Alberti, Patrick Blanchard, Laurie Porte, Antoine Pochelon, Yann Camenen, Andrea Scarabosio, Gilles Arnoux

Radially localized electron cyclotron heating (ECH) at the 2nd harmonic (X2) is used to tailor the current profile through the modification of the temperature, and hence conductivity, profiles. The optimal conditions for current profile broadening are inve ...

2007

Third harmonic EC heating of ELMy H-mode in TCV

Yves Martin, Stefano Alberti, Laurie Porte

Ohmic H-mode discharges in the Tokamak Configuration Variable (TCV) have recently been heated for the first time by electron cyclotron (EC) waves at the 3rd harmonic (X3) at full power. New edge localized mode (ELM) behaviour has been found, with larger am ...

2006

Exploring a small sawtooth regime in Joint European Torus plasmas with counterinjected neutral beams

Stefano Coda, Jonathan Graves

During a recent reversed toroidal field (B-T) campaign at the Joint European Torus (JET), experiments were performed to investigate the effect on sawteeth of neutral beam injection (NBI)-driven toroidal plasma rotation counter to the direction of the toroi ...

2006

Chauffage de plasma par ondes électromagnétiques à la troisième harmonique de la fréquence cyclotron des électrons dans le tokamak TCV

Gilles Arnoux

The Tokamak à Configuration Variable (TCV) programme is based on flexible plasma shaping capabilities together with a powerful electron cyclotron wave (ECW) additional heating for studies of stability, confinement, transport, control and power exhaust. In ...

EPFL2005

Sawtooth control in fusion plasmas

Olivier Sauter, Stefano Coda, Timothy Goodman, Jonathan Graves, Andrei Martynov

Clear observations of early triggering of neo-classical tearing modes by sawteeth with long quiescent periods have motivated recent efforts to control, and in particular destabilize, sawteeth. One successful approach explored in TCV utilizes electron cyclo ...

2005

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

Studies of the 'Quiescent H-mode' regime in ASDEX Upgrade and JET

Richard Pitts

The stationary edge localized mode (ELM)-free 'Quiescent H-mode' (QH-mode) regime, obtained with counter neutral beam injection, is studied in ASDEX Upgrade and Joint European Torus. QH-mode plasmas have high pedestal and core ion temperatures together wit ...

2005

Ideal MHD stability of tokamak plasmas with moderate and low aspect ratio

The need of durable and abundant energy sources for future ages stimulates the studies of thermonuclear energy sources, based on hot plasma confinement by magnetic fields. The most developed concept of hot plasma trap is the tokamak, where the plasma confi ...

EPFL2005

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