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Ambrogio Fasoli

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Publications associées (340)

Superdiffusive transport in laboratory and astrophysical plasmas

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

In the last few years it has been demonstrated, both by data analysis and by numerical simulations, that the transport of energetic particles in the presence of magnetic turbulence can be superdiffusive rather than normal diffusive (Gaussian). The term ‘su ...

Cambridge University Press2015

The negative triangularity tokamak: stability limits and prospects as a fusion energy system

Ambrogio Fasoli, Olivier Sauter, Laurent Villard, Andrei Martynov

The paper discusses edge stability, beta limits and power handling issues for negative triangularity tokamaks. The edge magnetohydrodynamic stability is the most crucial item for power handling. For the case of negative triangularity the edge stability pic ...

IOP Publishing Ltd2015

Nondiffusive transport regimes for suprathermal ions in turbulent plasmas

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

The understanding of the transport of suprathermal ions in the presence of turbulence is important for fusion plasmas in the burning regime that will characterize reactors, and for space plasmas to understand the physics of particle acceleration. Here, thr ...

Amer Physical Soc2015

TCV heating and in-vessel upgrades for addressing DEMO physics issues

Ambrogio Fasoli

TCV is presently undergoing major heating upgrades, installing a neutral beam for direct ion heating and increasing the electron cyclotron(EC) power injected in X-mode at the third harmonic(X3). The neutral beam is under construction at BINP-Plasma LLC(Rus ...

IOP Publishing Ltd2015

Approaching the investigation of plasma turbulence through a rigorous verification and validation procedure: A practical examplea)

Ambrogio Fasoli, Ivo Furno, Joaquim Loizu Cisquella, Paolo Ricci, Christian Gabriel Theiler, Fabio Riva, Federico David Halpern

In the present work, a Verification and Validation procedure is presented and applied showing, through a practical example, how it can contribute to advancing our physics understanding of plasma turbulence. Bridging the gap between plasma physics and other ...

American Institute of Physics (AIP)2015

Plasma turbulence, suprathermal ion dynamics and code validation on the basic plasma physics device TORPEX

Ambrogio Fasoli, Ivo Furno, Mario Ludovico Podesta, Francesca Maria Poli, Benoît Labit, Alexandre Dominique Bovet, Joaquim Loizu Cisquella, Gennady Plyushchev, Davoud Iraji, Paolo Ricci, Christian Gabriel Theiler, Kyle Gustafson, Fabio Avino

The TORPEX basic plasma physics device at the Center for Plasma Physics Research (CRPP) in Lausanne, Switzerland is described. In TORPEX, simple magnetized toroidal configurations, a paradigm for the tokamak scrape-off layer (SOL), as well as more complex ...

Cambridge University Press2015

Electromagnetic turbulent structures: A ubiquitous feature of the edge region of toroidal plasma configurations

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

Electromagnetic features of turbulent filaments, emerging from a turbulent plasma background, have been studied in four different magnetic configurations: the stellarator TJ-II, the Reversed Field Pinch RFX-mod, a device that can be operated also as a ohmi ...

Amer Inst Physics2015

Upgrade of the TCV tokamak, first phase: Neutral beam heating system

Stefano Alberti, René Chavan, Basil Duval, Damien Fasel, Ambrogio Fasoli, Timothy Goodman, Yves Martin, Olivier Sauter, Alexander Karpushov, Matthieu Toussaint

Experiments on TCV are designed to complement the work at large integrated tokamak facilities (such as JET) to provide a stepwise approach to extrapolation to ITER and DEMO in areas where medium-size tokamaks can often exploit their experimental capabiliti ...

Elsevier Science Sa2015

Experimental turbulence studies for gyro-kinetic code validation using advanced microwave diagnostics

Ambrogio Fasoli, Stefano Coda, Laurie Porte, Zhouji Huang

For a comprehensive comparison with theoretical models and advanced numerical turbulence simulations, a large spectrum of fluctuation parameters was measured on the devices ASDEX Upgrade, TCV, and Tore-Supra. Radial profiles of scale-resolved turbulence le ...

IOP Publishing Ltd2015

Advances in the physics basis for the European DEMO design

Ambrogio Fasoli, Marco Wischmeier, Hartmut Zohm, Emiliano Fable, Javier García Hernández, Emanuele Poli, Bernhard Sieglin

In the European fusion roadmap, ITER is followed by a demonstration fusion power reactor (DEMO), for which a conceptual design is under development. This paper reports the first results of a coherent effort to develop the relevant physics knowledge for tha ...

IOP Publishing Ltd2015

Heat loads in inboard limited L-mode plasmas in TCV

Ambrogio Fasoli, Ivo Furno, Benoît Labit, Federico Nespoli

Infrared thermography is used in TCV to measure the heat flux deposited onto the graphite tiles of the inner wall. The heat flux radial profile is found to be well described by the sum of a main parallel component and a non negligible cross-field component ...

2015

Transport equation describing fractional Lévy motion of suprathermal ions in TORPEX

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

Suprathermal ions, created by fusion reactions or by additional heating, will play an important role in burning plasmas such as the ones in ITER or DEMO. Basic plasma experiments, with easy access for diagnostics and well-controlled plasma scenarios, are p ...

IOP Publishing Ltd2014

The new TORPEX in-vessel toroidal conductor for the generation of a poloidal magnetic field

Ambrogio Fasoli, Ivo Furno, Fabio Avino

TORoidal Plasma EXperiment (TORPEX) is a Simple Magnetized Torus featuring open helical magnetic field lines obtained from the superposition of a small vertical component on the main toroidal field. This work introduces the experimental setup developed to ...

Amer Inst Physics2014

Basic characterization of TORPEX electrostatic modes in closed field line configurations

Ambrogio Fasoli, Ivo Furno, Sébastien Jolliet, Paolo Ricci, Fabio Avino

Electrostatic coherent modes are studied in the TORPEX device [Fasoli et al., Plasma Phys. Controlled Fusion 52, 124020 (2010)], in closed flux surfaces. The accessibility to this magnetic geometry is provided by a current-carrying in-vessel toroidal condu ...

Amer Inst Physics2014

Pre-sheath density drop induced by ion-neutral friction along plasma blobs and implications for blob velocities

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

The pre-sheath density drop along the magnetic field in field-aligned, radially propagating plasma blobs is investigated in the TORPEX toroidal experiment [Fasoli et al., Plasma Phys. Controlled Fusion 52, 124020 (2010)]. Using Langmuir probes precisely al ...

Amer Inst Physics2014

Time-resolved measurements of suprathermal ion transport induced by intermittent plasma blob-filaments

Ambrogio Fasoli, Ivo Furno, Alexandre Dominique Bovet

Suprathermal ion turbulent transport in magnetized plasmas is generally non-diffusive, ranging from subdiffusive to superdiffusive depending on the interplay of the turbulent structures and the suprathermal ion orbits. Here, we present time-resolved measur ...

American Physical Society2014

Nonclassical Transport and Particle-Field Coupling: from Laboratory Plasmas to the Solar Wind

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

Understanding transport of thermal and suprathermal particles is a fundamental issue in laboratory, solar-terrestrial, and astrophysical plasmas. For laboratory fusion experiments, confinement of particles and energy is essential for sustaining the plasma ...

Springer2013

Three-dimensional measurements of non-diffusive fast ion transport in TORPEX

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

In the basic plasma physics device TORPEX, progress in the fundamental understanding of supra-thermal ion transport is achieved by extensive sets of three-dimensional (3D) data, together with numerical simulations of supra-thermal ion tracers in fluid turb ...

2013

Basic investigations of electrostatic turbulence and its interaction with plasma and suprathermal ions in a simple magnetized toroidal plasma

Ambrogio Fasoli, Ivo Furno, Sébastien Jolliet, Alexandre Dominique Bovet, Joaquim Loizu Cisquella, Paolo Ricci, Christian Gabriel Theiler, Fabio Riva, Kyle Gustafson, Fabio Avino, Nicola Vianello

Progress in basic understanding of turbulence and its influence on the transport both of the plasma bulk and of suprathermal components is achieved in the TORPEX simple magnetized torus. This configuration combines a microwave plasma production scheme with ...

IOP Publishing Ltd2013

Overview of the RFX-mod fusion science programme

Wilfred Anthony Cooper, Ambrogio Fasoli, Ivo Furno, Christian Gabriel Theiler, Fabio Avino, Elena Gaio, Nicola Vianello, Alberto Ferro

This paper reports the highlights of the RFX-mod fusion science programme since the last 2010 IAEA Fusion Energy Conference. The RFX-mod fusion science programme focused on two main goals: exploring the fusion potential of the reversed field pinch (RFP) ma ...

IOP Publishing Ltd2013

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