E. Lazzaro

Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions

S. Mazzi, J. García, D. Zarzoso, Ye. O. Kazakov et autres

fr, ua, it, si, gb, se, pt, pl, fi, jp, gr, es, de, us, hu, lv, ch (code pays fourni par la source)

Cherenkov probes and runaway electrons diagnostics

R. Kwiatkowski, M. Rabiński, Marek J. Sadowski, J. Żebrowski et autres

Abstract The beams of fast runaway electrons (RE), which are often produced during tokamak discharges, are particularly dangerous and can induce serious damages of the vacuum vessel and internal components of the machine. The proper and fast diagnostics of RE beams is …

pl (code pays fourni par la source)

Overview of the FTU results

G. Pucella, E. Alessi, L. Amicucci, B. Angelini et autres

Since the 2012 IAEA-FEC Conference, FTU operations have been largely devoted to runaway electrons generation and control, to the exploitation of the 140 GHz electron cyclotron (EC) system and to liquid metal limiter elements. Experiments on runaway electrons have shown that the …

it, ch, es (code pays fourni par la source)

Nonlinear 2-D effects in the control of magnetic Islands by ECCD

E. Lazzaro, D. Borgogno, Luca Comisso, D. Grasso

The stabilization of tearing magnetic islands by means of localized current driven by electron cyclotron waves, requires optimizing the efficiency of the injected helical current. The problem is conventionally addressed using 0-D model of the (generalized) Rutherford equation to find the dependence …

it (code pays fourni par la source)

N)TM Onset by Central EC Power Deposition in FTU and TCV Tokamaks

S. Nowak, P. Buratti, O. Sauter, E. Lazzaro et autres

The presence in plasmas of conventional and neoclassical tearing modes is a key problem for the\n confinement. The investigation of their onset is still an open issue to avoid plasma degradation and possible disruptions. The destabilization of the modes by on-axis or …

Nonlinear and Diamagnetic Effects in a Neoclassical Model of Magnetic Reconnection

E. Lazzaro, Luca Comisso, Marco Del Pra, J. Weiland

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Enzo Lazzaro, Luca Comisso, Marco Del Pra; Nonlinear and …

it (code pays fourni par la source)

Density response to modulated EC heating in FTU tokamak

A. Jacchia, S. Cirant, F. De Luca, P. Buratti et autres

Impact of ECRH Launcher Flexibility on NTM Stabilization and Advanced Scenarios in large toroidal configurations as JET plasmas

S. Nowak, A. Bruschi, G. Ramponi, S. Cirant et autres

A beam-tracing code is used for extensive beam-tracing, ECCD and ECRH profile calculations in ideal JET-like plasmas with the main aim of specifying such crucial parameters for the ECRH launcher as the poloidal and toroidal steering ranges, the permitted error in the …

nl, de (code pays fourni par la source)

Privileged negative- or low-magnetic-shear equilibria in auxiliarly heated tokamaks

E. Lazzaro, E. Minardi

In this paper, a point of view is assumed where the tokamak is treated as a thermodynamic system open to external interactions. Those stationary states of the plasma are considered that are associated with a stationary entropy, i.e. with equilibrium between the …

Electron Cyclotron Current Drive Gontrol of Neoclassical Nonlinear Tearing Modes

Silvana Nowak, S. Cirant, E. Lazzaro, Ramponi Gabriella

An important role of ECCD is that of maintaining MHD-stable operation by a well localized current driveattheq-2,312surfacestostabilizethem=2,n=l,m=3,n=2teaingmodes. Inparticular,we refer here to the Neoclassical Tearing Modes whose relevance for reactor-grade tokamaks has been pointed out as they could set the B limit of …

Mode Coupling effects on the Non-Linear Evolution of Tearing Modes in Tokamaks

M. F. F. Nave, R. Coehle, F. Serra, E. Lazzaro

Ponderomotive coupling and scattering of lower hybrid waves by density fluctuations in a tokamak plasma

C. Castaldo, E. Lazzaro, M. Lontano, А. М. Сергеев et autres

The nonlinear coupling of lower hybrid (LH) waves with low frequency density fluctuations, via ponderomotive (PM) forces, is numerically studied by means of a 2D code which solves the coupled equations for the slowly varying amplitude of the LH electric field and …

it, ru (code pays fourni par la source)