Concept

Découpage plasma

Publications associées (294)

Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas

Henri Weisen, Yann Camenen, Mikhail Maslov

A broad survey of the experimental database of neutral beam heated plasmas in the JET tokamak has established the theoretically expected ubiquity, in rotating plasmas, of a convective transport mechanism which has its origin in the vertical particle drift ...

2012

Ubiquity 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 Agency2012

Observations on turbulence and beam-ion driven modes in TEXTOR

Stefano Coda, Mattia Albergante, Cornelis Adrianus de Meijere

At a sufficiently weak toroidal magnetic field, neutral beam injection heated, limited plasmas in the TEXTOR tokamak exhibit bursts of beam-ion driven 'fishbone' and Alfven modes, which are characterized for the first time using the multi-antenna reflectom ...

Iop Publishing Ltd2012

Characterization of Kinetic Processes in Nano Pulsed SDBD

Christoph Hollenstein, Peter Ott, Pénélope Leyland, Philip Peschke, Sami Goekce

The plasma produced by a nano pulsed surface dielectric barrier discharge (SDBD) is investigated experimentally by means of time-resolved optical emission spectroscopy. The relative populations of the most intense radiating species is determined with an in ...

2012

Edge-localized mode control by electron cyclotron waves in a tokamak plasma

Olivier Sauter, Stefano Coda, Timothy Goodman, Yves Martin, Jean-Marc Moret, Duccio Testa, Federico Alberto Alfredo Felici, Jonathan Rossel

Electron cyclotron resonance heating is applied to the edge of a high-confinement (H-mode) plasma featuring type I edge-localized modes (ELMs) in the TCV tokamak. As the deposition location is shifted gradually in a highly controlled manner towards the pla ...

2012

A Far-Infrared Polarimeter Diagnostic for the Measurement of the Poloidal Magnetic Field in the TCV Tokamak

Information about the poloidal field inside the plasma and about the current density profile is essential for the understanding of the behavior of tokamak plasmas. The poloidal field outside the plasma edge is easily measured by a set of magnetic coils, wh ...

EPFL2011

A multi-criteria decision method for sustainability assessment of the use phase of machine tool systems

Paul Xirouchakis, Ian Anthony Stroud, Ioan Oliver Avram

In recent years, going green has become a strategic priority in manufacturing which has evolved from the growing awareness of the need for environmentally friendly processes and products. Recent trends in developing new machining strategies able to support ...

Springer-Verlag2011

Fast Imaging of Blob Motion in TORPEX Plasmas

Ambrogio Fasoli, Ivo Furno, Davoud Iraji

To complement electrostatic probe measurements of plasma turbulence and study plasma structures with high spatial resolution, a nonperturbative direct imaging system has been developed on TORPEX. This system includes a fast framing Photron-APX-RS camera an ...

2011

Observations of core toroidal rotation reversals in Alcator C-Mod ohmic L-mode plasmas

Basil Duval, Alessandro Bortolon

Direction reversals of intrinsic toroidal rotation have been observed in Alcator C-Mod ohmic L-mode plasmas following modest electron density or toroidal magnetic field ramps. The reversal process occurs in the plasma interior, inside of the q = 3/2 surfac ...

2011

Balancing current drive and heating in DIII-D high noninductive current fraction discharges through choice of the toroidal field

Holger Reimerdes

In order to maintain stationary values of the stored energy and the plasma current in a tokamak discharge with all of the current driven noninductively, the sum of the α-heating power and the power required to provide externally driven current must be equa ...

2011

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