Publications related to Turbulence and bias-induced flows in simple magnetized toroidal plasmas

A comprehensive study of electrostatic turbulence and transport in the laboratory basic plasma physics device TORPEX

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Benoît Labit, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Fabio Avino, Kyle Gustafson, Alexandre Dominique Bovet, Davoud Iraji

TORPEX is a toroidal device located at the CRPP-EPFL in Lausanne. In TORPEX, a vertical magnetic field superposed on a toroidal field creates helicoidal field lines with both ends terminating on the torus vessel. The turbulence driven by magnetic curvature ...

2012

Nondiffusive Suprathermal Ion Transport in Simple Magnetized Toroidal Plasmas

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Kyle Gustafson

We investigate suprathermal ion dynamics in simple magnetized toroidal plasmas in the presence of electrostatic turbulence driven by the ideal interchange instability. Turbulent fields from fluid simulations are used in the nonrelativistic equation of ion ...

2012

Investigation of suprathermal ion transport in TORPEX

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Kyle Gustafson, Alexandre Dominique Bovet

In burning plasmas, fast ions may be generated by ion cyclotron resonance heating, neutral beam injection and fusion reactions. Fast ions will be responsible for a significant fraction of plasma heating and, in some scenarios, non-inductive current drive. ...

2012

Properties of convective cells generated in magnetized toroidal plasmas

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Christian Gabriel Theiler, Joaquim Loizu Cisquella

Convective cells for turbulence control, generated by means of biased electrodes, are investigated in the simple magnetized toroidal plasmas of TORPEX. A two-dimensional array of 24 electrodes is installed on a metal limiter to test different biasing schem ...

American Institute of Physics2012

Progressive steps towards global validated simulation of edge plasma turbulence

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Annamaria Mosetto

Simulations of edge turbulence are particularly challenging due to the presence of large amplitude fluctuations and to the coupling of equilibrium and fluctuating scales. While validating edge simulations is necessary to assess the accuracy of our understa ...

2012

Basic Investigation of Turbulent Structures and Blobs of Relevance for Magnetic Fusion Plasmas

Christian Gabriel Theiler

Similarly to neutral fluids, plasmas often exhibit turbulent behavior. Turbulence in plasmas is usually more complex than in neutral fluids due to long range interactions via electric and magnetic fields, and kinetic effects. It gives rise to many interest ...

EPFL2011

Global two-fluid simulations of tokamak SOL turbulence

Paolo Ricci, Federico David Halpern, Annamaria Mosetto

We present non-linear self-consistent global simulations of the SOL plasma dynamics using the Global Braginskii Solver (GBS) code. The code solves on the drift-reduced Braginkii equations, with cold ions. Studied originally for the simulation of the Simple ...

2011

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

Andreas Pitzschke

The tokamak à configuration variable (TCV) is unique in its ability to create a variety of plasma shapes and to heat the electron population in high density regimes using microwave power at the third harmonic of the electron cyclotron frequency. In the fra ...

EPFL2011

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Ambrogio Fasoli, Ivo Furno, Christian Gabriel Theiler, Nicola Vianello

In simple magnetized toroidal plasmas, field-aligned blobs originate from ideal interchange waves and propagate radially outward under the effect of

\grad B

and curvature induced

E \times B

drifts. We report on the first experimental two-dimensional me ...

2011

Turbulence Phase Space in Simple Magnetized Toroidal Plasmas

Paolo Ricci

Plasma turbulence in a simple magnetized torus (SMT) is explored for the first time with three-dimensional global fluid simulations. Three turbulence regimes are described: an ideal interchange mode regime, a previously undiscovered resistive interchange m ...

American Physical Society2010

Turbulence and bias-induced flows in simple magnetized toroidal plasmas

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A comprehensive study of electrostatic turbulence and transport in the laboratory basic plasma physics device TORPEX

Nondiffusive Suprathermal Ion Transport in Simple Magnetized Toroidal Plasmas

Investigation of suprathermal ion transport in TORPEX

Properties of convective cells generated in magnetized toroidal plasmas

Progressive steps towards global validated simulation of edge plasma turbulence

Basic Investigation of Turbulent Structures and Blobs of Relevance for Magnetic Fusion Plasmas

Global two-fluid simulations of tokamak SOL turbulence

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Turbulence Phase Space in Simple Magnetized Toroidal Plasmas

Investigation of suprathermal ion transport in TORPEX

Properties of convective cells generated in magnetized toroidal plasmas

Nondiffusive Suprathermal Ion Transport in Simple Magnetized Toroidal Plasmas

Basic Investigation of Turbulent Structures and Blobs of Relevance for Magnetic Fusion Plasmas

Progressive steps towards global validated simulation of edge plasma turbulence

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Global two-fluid simulations of tokamak SOL turbulence

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

Turbulence Phase Space in Simple Magnetized Toroidal Plasmas

A comprehensive study of electrostatic turbulence and transport in the laboratory basic plasma physics device TORPEX