Concept

Penning trap

Related publications (130)

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

Real time control of the plasma current and elongation in tokamaks using ECRH actuators

Stefano Coda, James Paley

Real time control of the plasma elongation and plasma current using electron cyclotron resonance heating (ECRH) actuators has been demonstrated on TCV. Tokamak plasmas may be elongated by off-axis ECRH. The associated flattening of the current density prof ...

Plasma Phys. Control. Fusion2007

Fast-ion dynamics in the TEXTOR tokamak measured by collective Thomson scattering

Laurie Porte

Here we present the first measurements by collective Thomson scattering of the evolution of fast-ion populations in a magnetically confined fusion plasma. 150 kW and 110 Ghz radiation from a gyrotron were scattered in the TEXTOR tokamak plasma with energet ...

2006

Measurement of the instability threshold for toroidal Alfven eigenmodes in JET plasmas with forward and reversed magnetic field

Ambrogio Fasoli, Duccio Testa

In this paper we have investigated the effect of reversing the direction of the magnetic field and plasma current, hence the ion del B-drift direction, on the instability threshold of toroidal Alfven eigenmodes with toroidal mode number (n) in the range ve ...

2006

Electron heat transport studies

Yann Camenen

Electron transport in fusion plasmas is intensively studied in coordinated experiments and great progress in physics understanding has been achieved during the past years. A threshold in normalized gradient explains most of the observations, both in steady ...

2006

Design of a tangential phase contrast imaging diagnostic for the TCV tokamak

Stefano Coda, René Chavan, Alessandro Marinoni

A core density fluctuation imaging diagnostic is being developed for the TCV tokamak, employing a 7 cm wide CO2 laser beam transmitted through the plasma in a near-toroidal direction. The proposed system employs the phase contrast method and can resolve wa ...

2006

Plasma breakdown using second-harmonic EC waves in helical devices

Plasma breakdown using second-harmonic electron cyclotron (EC) waves has been studied experimentally in three helical devices, Heliotron J, TJ-II and CHS. Recent technological progress on electron cyclotron heating (ECH) systems enables us to determine wha ...

2006

Linear stability analysis of microinstabilities in electron internal transport barrier non-inductive discharges

Olivier Sauter, Yann Camenen, Alberto Bottino, Emiliano Fable

The role of the current profile and ion and electron temperature ratio in Tokamak A Configuration Variable (TCV) electron internal transport barrier (eITB) noninductive discharges is inspected by means of the linear gyrokinetic global code LORB5 (Bottino e ...

2006

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

Electron heat transport in shaped TCV L-mode plasmas

Olivier Sauter, Stefano Coda, Timothy Goodman, Laurie Porte, Alexander Karpushov, Antoine Pochelon, Yann Camenen, Roland Behn, Alberto Bottino

Electron heat transport experiments are performed in L-mode discharges at various plasma triangularities, using radially localized electron cyclotron heating to vary independently both the electron temperature T-e and the normalized electron temperature gr ...

2005

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