Publications de Costanza Zucca

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On the Tokamak a Configuration Variable (TCV), electron internal transport barriers (eITBs) can be formed during a gradual evolution from a centrally peaked to a hollow current profile while all external actuators are held constant. The formation occurs ra ...

Starting from a standard single null X-point configuration, a second order null divertor (snowflake (SF)) has been successfully created on the Tokamak à Configuration Variable (TCV) tokamak. The magnetic properties of this innovative configuration have bee ...

Electron internal transport barriers (elTBs) are generated in the TCV tokamak with strong electron cyclotron resonance heating in a variety of conditions, ranging from steady-state fully noninductive scenarios to stationary discharges with a finite inducti ...

Electron internal transport barriers (eITBs) are obtained in TCV with different heating and current drive schemes. They are sustained in steady-state conditions for several energy confinement and current redistribution times. In these scenarios, the densit ...

Generation of a swing electron cyclotron current drive (swing ECCD), i.e. driving alternated, symmetric, positive or negative local ECCD, during a single discharge and at constant total input EC power, was performed at the Tokamak a Configuration Variable ...

The rapid formation of an electron internal transport barrier (eITB) is observed during a slow evolution (similar or equal to 200 ms) from a centrally peaked to a hollow current density profile, while all external actuators remain constant. The time consta ...

A two-fields model that self-consistently describes the coupled, spectral dynamics of flute mode large-scale flows turbulence is presented. This model has a characteristic form of a 'predator-prey' system, in which the populations of flute mode quanta (pre ...

Neoclassical tearing modes (NTMs) are magnetic islands which increase locally the radial transport and therefore degrade the plasma performance. They are self-sustained by the bootstrap current perturbed by the enhanced radial transport. The confinement de ...

Simulations of the plasma current density evolution in electron internal transport barrier discharges on the Tokamak a Configuration Variable (TCV) have been performed, in order to determine the relationship between the safety-factor profile and the electr ...

The aim of the present work is to provide a better insight on the magnetic shear profile modification in the Switched ECCD experiments. Modelling of the plasma current density is carried on by the ASTRA transport code employed in both predictive and interp ...

Improved electron energy confinement in tokamak plasmas, related to internal transport barriers, has been linked to nonmonotonic current density profiles. This is difficult to prove experimentally since usually the current profiles evolve continuously and ...

Important ingredients of the advanced-tokamak route to fusion have been explored in depth in the Tokamak a Configuration Variable [F. Hofmann, J. B. Lister, M. Anton , Plasma Phys. Controlled Fusion 36, B277 (1994)] over the past two years. Using a uniquel ...

This paper considers the heating mix of ITER for the two main scenarios. Presently, 73MWof absorbed power are foreseen in the mix 20/33/20 for ECH, NBI and ICH. Given a sufficient edge stability, Q = 10 the goal of scenario 2 can be reached with 40MW power ...

Costanza Zucca

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Safety factor profile requirements for electron ITB formation in TCV

Snowflake Divertor Plasmas on TCV

The physics of electron internal transport barriers in the TCV tokamak

Inward thermodiffusive particle pinch in electron internal transport barriers in TCV

Modulation of electron transport during Swing ECCD discharges in TCV

Rapid electron internal transport barrier formation during magnetic shear reversal in fully non-inductive TCV discharges

Nonlinear dynamics of flute modes and self-organization phenomena in turbulent magnetized plasma

On the Requirements to Control Neoclassical Tearing Modes in Burning Plasmas

Current density evolution in electron internal transport barrier discharges in TCV

Studies of Electron Transport and Current Diffusion in Switched ECCD experiments on TCV

Inductive current density perturbations to probe electron internal transport barriers in tokamaks

High-bootstrap, noninductively sustained electron internal transport barriers in the Tokamak a Configuration Variable

Partial Stabilization and Control of Neoclassical Tearing Modes in Burning Plasmas

On the heating mix of ITER

The role of MHD in the sustainment of electron internal transport barriers and H-mode in TCV confinement during flat-top eITB plasmas on TCV

Towards q-profile reconstruction through fast-MHD analysis on TCV

The Physics of Electron Internal Transport Barriers in the TCV Tokamak

Physics of steady-state electron internal transport barriers on TCV

Physics analysis of the ITER ECW system for optimized performance

Co- and Counter - viewing oblique ECE measurements during ECH and ECCD on the TCV tokamak