Publications (11)
Three-dimensional boundary turbulence simulations of a RFX-mod plasma in the presence of voltage biasing
M. Giacomin, N. Vianello, R. Cavazzana +3
Three-dimensional turbulence simulations of a RFX-mod diverted plasma are performed in the presence of a biasing electrode. The simulations show a strong suppression of turbulent t…
A first principles explanation for the density limit in magnetized plasmas
M. Zuin, A. Carati, M. Marino +2
Fusion research on magnetic confinement is confronted with a severe problem concerning the electron densities ne to be used in fusion devices. Indeed, high densities are mandatory…
Density limit in a first principles model of a magnetized plasma in the Debye--Hückel approximation
A. Carati, M. Zuin, A. Maiocchi +3
A crucial problem concerning a large variety of fusion devices is that the confinement due to an external magnetic field is lost above a critical density, while a widely accepted f…
Drift-Alfven vortex structures in the edge region of a fusion relevant plasma
N. Vianello, M. Spolaore, E. Martines +5
Edge turbulent structures are commonly observed in fusion devices and are generally believed to be responsible for confinement degradation. Among their origin Drift-Alfven turbulen…
A microscopic instability in neutral magnetized plasmas
M. Marino, M. Zuin, A. Carati +2
We show that in a neutral magnetized plasma there exist microscopic oscillatory modes, with wavelengths of the order of magnitude of the mean interparticle distance, which become u…
Two-fluid boundary turbulence simulations in reversed field pinch plasmas
M. Giacomin, B. Momo, I. Predebon +2
Turbulent transport in magnetic confinement fusion devices governs the overall plasma confinement properties and regulates the plasma-material interaction at the first wall. In the…
Direct observation of current in type I ELM filaments on Asdex Upgrade
N. Vianello, V. Naulin, R. Schrittwieser +8
Magnetically confined plasmas are often subject to relaxation oscillations accompanied by large transport events. This is particularly the case for the high confinement regime of t…
Transition from order to chaos, and density limit, in magnetized plasmas
A. Carati, M. Zuin, A. Maiocchi +3
It is known that a plasma in a magnetic field, conceived microscopically as a system of point charges, can exist in a magnetized state, and thus remain confined, inasmuch as it is…
Lessons learned after three years of SPIDER operation and the first MITICA integrated tests
D. Marcuzzi, V. Toigo, M. Boldrin +139
ITER envisages the use of two heating neutral beam injectors plus an optional one as part of the auxiliary heating and current drive system. The 16.5 MW expected neutral beam power…
Spatiotemporal synchronization of drift waves in a magnetron sputtering plasma
E. Martines, M. Zuin, R. Cavazzana +5
A feedforward scheme is applied for drift waves control in a magnetized magnetron sputtering plasma. A system of driven electrodes collecting electron current in a limited region o…
Resistive g-modes in a reversed field pinch plasma
M. Zuin, S. Spagnolo, R. Paccagnella +5
First direct experimental evidence of high frequency, high toroidal mode number (n>20), magnetic fluctuations due to unstable resistive interchange modes (g-modes) resonant in the…