I. Furno

Details der Publikationsliste

Zeitraum

1996 - 2009

Anzahl

155

Co-Autoren

Transition of MHD Kink-Stability Properties between Line-Tied and Non-Line-Tied Boundary Conditions (2008)

Sun, X, Intrator, T.P., Dorf, L, Furno, I, Lapenta, G

Magnetic flux tubes or flux ropes in plasmas are important in nature and the laboratory. Axial boundary conditions strongly affect flux rope behavior, but this has never been systematically...

Experimental Observation of the Blob-Generation Mechanism from InterchangeWaves in a Plasma (2008)

Furno, I., Labit, B., Podesta, M., Fasoli, A., Mueller, S.H., Poli, F.M., ...

The mechanism for blob generation in a toroidal magnetized plasma is investigated using time-resolved measurements of two-dimensional structures of electron density, temperature, and plasma...

The role of the density gradient on intermittent cross-field transport events in a simple magnetized toroidal plasma (2008)

Theiler, C., Diallo, A., Fasoli, A., Furno, I., Labit, B., Podesta, M., ...

Intermittent cross-field particle transport events (ITEs) are studied in the basic toroidal device TORPEX [TORoidal Plasma EXperiment, A. Fasoli et al., Phys. Plasmas 13, 055902 (2006)], with focus...

Physics Insight and Performance Benefit from Plasma Shaping Experiments in MHD and Energy Transport in the TCV Tokamak (2008)

Pochelon, A., Brunner, S., Camenen, Y., Coda, S., Graves, J., Marinoni, A., ...

The unique flexibility of TCV in plasma shaping has been exploited to address different aspects of tokamak physics in which the plasma shape may play a role. This paper summarizes the experiments...

A three dimensional probe positioner (2008)

Intrator, T., Sun, X., Dorf, L., Furno, I., Lapenta, G.

In order to sort out the physics that is important in many plasma experiments, data in three dimensions 3D are becoming necessary. Access to the usual cylindrical vacuum vessel is typically...

Statistical properties of electrostatic turbulence in toroidal magnetized plasmas (2007)

Labit, B., Diallo, A., Fasoli, A., Furno, I., Iraji, D., Mueller, S.H., ...

A unique parabolic relation is observed to link skewness and kurtosis of density fluctuation signals, measured over the whole cross-section of the simple toroidal device TORPEX for a broad range of...

Characterization of the electron distribution function in an electron-cyclotron driven toroidal plasma (2007)

Podesta, M., Diallo, A., Fasoli, A., Furno, I., Labit, B., Mueller, S.H., ...

The local properties of the electron energy distribution function are investigated in the electron-cyclotron wave driven toroidal device TORPEX (Fasoli et al 2006 Phys. Plasmas 13 055902). The...

Universal statistical properties of drift-interchange turbulence in TORPEX plasmas (2007)

Labit, B., Furno, I., Fasoli, A., Diallo, A., Mueller, S. H., Plyushchev, G., ...

A unique parabolic relation is observed to link skewness and kurtosis of around ten thousand density fluctuation signals, measured over the whole cross section of a toroidal magnetized plasma for a...

Current driven rotating kink mode in a plasma column with a non-line-tied free end (2006)

Furno, I., Intrator, T. P., Abbate, S., Madziwa-Nussinov, T., Light, A., Dorf, L., ...

First experimental measurements are presented for the kink instability in a linear plasma column which is insulated from an axial boundary by finite sheath resistivity. Instability threshold below...

Sawtooth behaviour in highly elongated TCV plasmas (2006)

Reimerdes, H., Furno, I., Hofmann, F., Martynov, A., Pochelon, A., Sauter, O.

The effect of plasma elongation kappa on the sawtooth behaviour is studied in ohmically heated TCV plasmas up to values of kappa = 2.8. Above a certain value of kappa, which varies from 2.2 to 2.6...

Experimental characterization of drift-interchange instabilities in a simple toroidal plasma (2006)

Poli, F.M., Brunner, S., Diallo, A., Fasoli, A., Furno, I., Labit, B., ...

Low frequency electrostatic instabilities are investigated on TORPEX [Fasoli, Labit, McGrath, Muller, Podesta, and Poli, Bull. Am. Phys. Soc. 48, 119 (2003)], a toroidal device for basic plasma...

Fast ion source and detector for investigating the interaction of turbulence with suprathermal ions in a low temperature toroidal plasma - art. no. 10F503 (2006)

Plyushchev, G., Diallo, A., Fasoli, A., Furno, I., Labit, B., Mueller, S.H., ...

A specific experimental apparatus consisting of an ion source and a detector for the investigation of the interaction between suprathermal ions and drift-wave turbulence is developed on the toroidal...

Probabilistic analysis of turbulent structures from two-dimensional plasma imaging (2006)

Mueller, S.H., Diallo, A., Fasoli, A., Furno, I., Labit, B., Plyushchev, G., ...

A method is presented to construct object-related structure observables, such as size, mass, shape, and trajectories from two-dimensional plasma imaging data. The probability distributions of these...

Kink instability of flux ropes anchored at one end and free at the other (2006)

Lapenta, G., Furno, I., Intrator, T., Delzanno, G. L.

The kink instability of a magnetized plasma column (flux rope) is a fundamental process observed in laboratory and in natural plasmas. Previous theoretical, experimental, and observational work has...

Fast ion source and detector for investigating the interaction of turbulence with suprathermal ions in a low temperature toroidal plasma (2006)

Plyushchev, G., Diallo, A., Fasoli, A., Furno, I., Labit, B., Muller, S. H., ...

A specific experimental apparatus consisting of an ion source and a detector for the investigation of the interaction between suprathermal ions and drift-wave turbulence is developed on the toroidal...

Collisionality and shear dependences of density peaking in JET and extrapolation to ITER (2005)

Weisen, H., Zabolotsky, A., Angioni, C., Furno, I., Garbet, X., Giroud, C., ...

Results from an extensive database analysis of JET density profiles in stationary conditions show that the density peaking factor n(e0)/< n(e)> in JET H modes increases from near 1.2 at high...

A new method for the inversion of interferometry data using basis functions derived from singular value decomposition of local measurements in tokamak plasmas (2005)

Furno, I., Weisen, H., Carey, C., Angioni, C., Behn, R., Fable, E., ...

A novel method for inverting time-resolved line-integrated interferometric plasma density measurements is described. The method uses singular value decomposition of local density profiles from...

Application of the singular value decomposition method for inversion of interferometer measurements in fusion plasmas (2004)

Carey, C. S., Furno, I., Weisen, H., Behn, R., Fable, E., Angioni, C.

We present applications of a recently developed method, the singular value decomposition inversion (SVD-I), for inverting line integrated multichannel interferometer measurements in fusion devices....

INSTITUTE OF PHYSICS PUBLISHING PLASMA PHYSICS AND CONTROLLED FUSION (2004)

I Furno, H Weisen, C Carey, C Angioni, R Behn, E Fable, ...

A new method for the inversion of interferometry data using basis functions derived from singular value decomposition of local measurements in tokamak plasmas

Recent results from the electron cyclotron heated plasmas in Tokamak à Configuration Variable (TCV) (2003)

Henderson,M. A., Alberti,S., Angioni,C., Arnoux,G., Behn,R., Blanchard,P., ...

In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal...

An overview of recent results from the TCV Tokamak (2003)

Goodman,T. P., Ahmed,S. M., Alberti,S., Andrèbe,Y., Angioni,C., Appert,K., ...

The TCV tokamak ( R = 0.88 m, κ = 2.5, are produced at low normalized current using far off-axis EC heating (ECH) and ECCD to broaden the current profile. Third harmonic heating is used to heat the...

Recent results from the electron cyclotron heated plasmas in Tokamak à Configuration Variable (TCV) (2003)

Henderson, M. A., Alberti, S., Angioni, C., Arnoux, G., Behn, R., Blanchard, P., ...

In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal...

An overview of recent results from the TCV Tokamak (2003)

Goodman, T. P., Ahmed, S. M., Alberti, S., Andrèbe, Y., Angioni, C., Appert, K., ...

The TCV tokamak ( R = 0.88 m, κ = 2.5, are produced at low normalized current using far off-axis EC heating (ECH) and ECCD to broaden the current profile. Third harmonic heating is used to heat the...

Recent results from the electron cyclotron heated plasmas in Tokamak a Configuration Variable (TCV) (2003)

Henderson, M. A., Alberti, S., Angioni, C., Arnoux, G., Behn, R., Blanchard, P., ...

In noninductively driven discharges, 0.9 MW second harmonic (X2) off-axis co-electron cyclotron current drive deposition is combined with 0.45 MW X2 central heating to create an electron internal...

An overview of results from the TCV tokamak (2003)

Goodman, T. P., Ahmed, S. M., Alberti, S., Andrebe, Y., Angioni, C., Appert, K., ...

The Tokamak Configuration Variable (TCV) tokamak (R = 0.88 m, a < 0.25 m, B < 1.54 T) programme is based on flexible plasma shaping and heating for studies of confinement, transport, control and...

Observation of inward and outward particle convection in the core of electron cyclotron heated and current driven plasmas in the Tokamak a Configuration Variable (2003)

Furno, I., Weisen, H.

In the Tokamak a Configuration Variable [F. Hofmann, J.B. Lister, M. Anton et al., Plasma Phys. Controlled Fusion 36, B277 (1994)], inward or outward convection in the core of electron cyclotron...

Incomplete reconnection in sawtooth crashes in ASDEX Upgrade (2002)

Letsch,A., Zohm,H., Ryter,F., Suttrop,W., Gude,A., Porcelli,F., ...

The temporal evolution of the sawtooth crash in ASDEX Upgrade Ohmic and ECRH heated discharges is analysed using a heuristic reconnection model to simulate measured ECE signals. The method turns out...

Incomplete reconnection in sawtooth crashes in ASDEX Upgrade (2002)

Letsch, A., Zohm, H., Ryter, F., Suttrop, W., Gude, A., Porcelli, F., ...

The temporal evolution of the sawtooth crash in ASDEX Upgrade Ohmic and ECRH heated discharges is analysed using a heuristic reconnection model to simulate measured ECE signals. The method turns out...

Shape dependence of sawtooth inversion radii and profile peaking factors in TCV L mode plasmas (2002)

Weisen, H., Furno, I., Alberti, S., Angioni, C., Appert, K., Behn, R., ...

Sawtooth inversion radii and profile peaking factors of a large variety of ohmic and ECH heated L mode plasmas, including, elongations up to 2.6 and triangularities between -0.5 and 0.75, have been...

Incomplete reconnection in sawtooth crashes in ASDEX Upgrade (2002)

Letsch, A., Zohm, H., Ryter, F., Suttrop, W., Gude, A., Poreelli, F., ...

The temporal evolution of the sawtooth crash in ASDEX Upgrade Ohmic and ECRH heated discharges is analysed using a heuristic reconnection model to simulate measured ECE signals. The method turns out...

Effect of ELMS on the measurement of vertical plasma position in TCV and JET (2002)

Hofmann, F., Furno, I., Gerasimov, S., Martin, Y., Milani, F., Nave, M. F. F., ...

The effect of ELMS on the vertical position observer in TCV has been investigated and a new, optimized, observer which minimizes the influence of ELMS has been constructed. The new observer has been...

Particle transport with high power central ECH and ECCD in TCV (2001)

Weisen, H., Furno, I.

A coupled heat and particle transport phenomenon, leading to particle depletion from the plasma core is observed in a variety of plasma conditions with centrally deposited electron cyclotron heating...

Overview of TCV results (2001)

Weisen, H., Alberti, S., Angioni, C., Appert, K., Bakos, J., Behn, R., ...

The TCV tokamak (R = 0.88 in, a < 0.25 in, BT < 1.54 T) is equipped with six 0.5 MW gyrotron sources operating at 82.7 GHz for second harmonic X mode ECH. By distributing the ECCD current sources...

Steady-state fully noninductive operation with electron cyclotron current drive and current profile control in the tokamak a configuration variable (TCV) (2001)

Sauter, O., Angioni, C., Coda, S., Gomez, P., Goodman, T. P., Henderson, M. A., ...

Fully noninductive, steady-state electron cyclotron current drive (ECCD) has been demonstrated for the first time in experiments carried out in the tokamak a configuration variable (TCV) [O. Sauter ,...

Modelling of macroscopic magnetic islands in tokamaks (2001)

Porcelli, F., Airoldi, A., Angioni, C., Bruschi, A., Buratti, P., Califano, F., ...

The article presents experimental and theoretical investigations on the dynamics of saw-teeth and neoclassical tearing modes in tokamak plasmas. The main findings of these investigations are: (1) The...

Plasma shape effects on sawtooth/internal kink stability and plasma shaping using electron cyclotron wave current profile tailoring in TCV (2001)

Pochelon, A., Hofmann, F., Reimerdes, H., Angioni, C., Behn, R., Duquerroy, R., ...

The effect of plasma shaping (triangularity and elongation) on sawtooth stability is addressed as well as the technique of current profile broadening using off-axis ECH to enlarge the operational...

Divertor geometry effects on detachment in TCV (2001)

Pitts, R. A., Duval, B. P., Loarte, A., Moret, J. M., Boedo, J. A., Coster, D., ...

Experimental observations and some preliminary results from B2-Eirene code modelling of divertor detachment in the TCV tokamak are reported, with emphasis on the aspects of this detachment related to...

Stability and energy confinement of highly elongated plasmas in TCV (2001)

Hofmann, F., Behn, R., Coda, S., Goodman, T. P., Henderson, M., Lavanchy, P., ...

The operating space of the TCV tokamak has been extended to higher elongation, kappa = 2.8, and higher normalized current, I-N = I-p/aB = 3.6MA/mT, than were previously attainable. This has been...

Understanding sawtooth activity during intense electron cyclotron heating experiments on TCV (2001)

Furno, I., Angioni, C., Porcelli, F., Weisen, H., Behn, R., Goodman, T. P., ...

Different types of central relaxation oscillations are observed in the presence of ECH depending on the location of the deposited power. In the TCV tokamak, normal sawteeth, i.e. triangular sawteeth...

Steady-state fully noninductive current driven by electron cyclotron waves in a magnetically confined plasma (2000)

Sauter, O., Henderson, M. A., Hofmann, F., Goodman, T., Alberti, S., Angioni, C., ...

A steady-state, fully noninductive plasma current has been sustained for the first time in a tokamak using electron cyclotron current drive only. In this discharge, 123 kA of current have been...

Model for humpback relaxation oscillations (2000)

Porcelli, F., Angioni, C., Behn, R., Furno, I., Goodman, T., Henderson, M. A., ...

An interpretation of non-standard, central MHD events in the TCV tokamak during localized ECRH is presented. It is shown that the non-standard behaviour is a consequence of specific features in the...

High-power ECH and fully non-inductive operation with ECCD in the TCV tokamak (2000)

Coda, S., Goodman, T. P., Henderson, M. A., Hofmann, F., Pietrzyk, Z. A., Sauter, O., ...

Experiments with high-power electron cyclotron heating (ECH) and current drive (ECCD) in the TCV tokamak are discussed. Power up to 2.7 MW from six gyrotrons is delivered to the tokamak at the...

"Profile consistency" features in strongly shaped Ohmic tokamak plasmas (1999)

Weisen, H., Behn, R., Furno, I., Moret, J. M., Sauter, O.

A large variety of shaped tokamak discharges have been created in the Tokamak a Configuration Variable (TCV) with main parameters B-T

Energy confinement and MHD activity in shaped TCV plasmas with localized electron cyclotron heating (1999)

Pochelon, A., Goodman, T. P., Henderson, M., Angioni, C., Behn, R., Coda, S., ...

Confinement in TCV electron cyclotron heated discharges was studied as a function of plasma shape, i.e. as a function of elongation, 1.1 < kappa < 2.15, and triangularity, -0.65 less than or equal to...

Experimental investigation of the effects of neon injection in TCV (1999)

Pitts, R. A., Refke, A., Duval, B. P., Furno, I., Joye, B., Lister, J. B., ...

This contribution describes the results of impurity seeding experiments using neon gas injection into the private fl zone of an ohmically heated TCV single null lower, deuterium fuelled, open...

Behaviour of central plasma relaxation oscillations during localized electron cyclotron heating on the TCV tokamak (1999)

Pietrzyk, Z. A., Pochelon, A., Goodman, T. P., Henderson, M. A., Hogge, J. P., Reimerdes, H., ...

During initial studies of ECRH in the TCV tokamak, non-standard central MHD activities, such as humpbacks and saturated and inverted sawteeth, have been observed while changing the heating location,...

Fast bolometric measurements on the TCV tokamak (1999)

Furno, I., Weisen, H., Mlynar, J., Pitts, R. A., Llobet, X., Marmillod, P., ...

The design and first results are presented from a bolometric diagnostic with high temporal resolution recently installed on the TCV tokamak. The system consists of two pinhole cameras viewing the...

'Profile consistency' features in shaped sawtoothing ohmic TCV plasmas (1998)

Weisen, H., Behn, R., Furno, I., Moret, J. M., Sauter, O.

A large variety of plasma conditions has been created in TCV (Tokamak a Configuration Variable, B-T < 1.5 T, R-0 = 0.88 m, a < 0.25 m). They include limited and diverted discharges with elongations...

Experimental and theoretical stability limits of highly elongated tokamak plasmas (1998)

Hofmann, F., Sauter, O., Reimerdes, H., Furno, I., Pochelon, A.

Stability limits of highly elongated, D-shaped plasmas have been measured in the TCV (tokamak a configuration variable) tokamak. It is found that the plasma current is limited by kink-type...

Effect of plasma shape on confinement and MHD behaviour in the TCV tokamak (1997)

Weisen, H., Moret, J. M., Franke, S., Furno, I., Martin, Y., Anton, M., ...

The energy confinement time of TCV ohmic L mode discharges depends strongly on plasma shape. For fixed average current and electron densities, confinement times increase with plasma elongation and...

Effect of plasma shape on confinement and MHD behaviour in TCV (1997)

Weisen, H., Alberti, S., Berry, S., Behn, R., Blanchard, P., Bosshard, P., ...

The TCV tokamak (B-T < 1.5 T, R approximate to 0.88 m, a < 0.25 m) has produced a wide variety of plasma configurations, both diverted and limited, with elongations kappa(a), ranging from 0.9 to...

Vertical instability in TCV: Comparison of experimental and theoretical growth rates (1997)

Hofmann, F., Dutch, M. J., Ward, D. J., Anton, M., Furno, I., Lister, J. B., ...

Growth rates of the axisymmetric mode in vertically elongated plasmas in the Tokamak a Configuration Variable (TCV) are measured and compared with numerically calculated growth rates for the...

Cross-field transport by instabilities and blobs in a magnetized toroidal plasma

Podesta, M., Fasoli, A., Labit, B., Furno, I., Ricci, P., Poli, F.M., ...

The mechanisms for anomalous transport across the magnetic field are investigated in a toroidal magnetized plasma. The role of plasma instabilities and macroscopic density structures (blobs) is...