C. Angioni

Details der Publikationsliste

Zeitraum

1998 - 2009

Anzahl

302

Co-Autoren

Radio-frequency power injection and impurity profile control in JET (2009)

Valisa, M., Angioni, C., Carraro, L., Coffey, I., Giroud, C., Predebon, I., ...

36th European Physical Society Conference on Plasma Physics, Sofia, Bulgaria, June 29-July 3, 2009

On the extrapolation to ITER of discharges in present tokamaks (2007)

Peeters, A. G., Angioni, C., Sips, A. C. C.

An expression for the extrapolated fusion gain G = Pfusion /5 Pheat (Pfusion being the total fusion power and Pheat the total heating power) of ITER in terms of the confinement improvement factor (H)...

The toroidal momentum pinch velocity (2007)

Peeters, A. G., Angioni, C., Strintzi, D.

In this letter a pinch velocity of toroidal momentum is shown to exist for the first time. Using the gyro-kinetic equations in the frame moving with the equilibrium toroidal velocity, it is shown...

Particle and impurity transport in the Axial Symmetric Divertor Experiment Upgrade and the Joint European Torus, experimental observations and theoretical understanding - art. no. 055905 (2007)

Angioni, C., Carraro, L., Dannert, T., Dubuit, N., Dux, R., Fuchs, C., ...

Experimental observations on core particle and impurity transport from the Axial Symmetric Divertor Experiment Upgrade [O. Gruber, H.-S. Bosch, S. Gunter , Nucl Fusion 39, 1321 (1999)] and the Joint...

Particle and impurity transport in the Axial Symmetric Divertor Experiment Upgrade and the Joint European Torus, experimental observations and theoretical understanding (2007)

Angioni, C., Carraro, L., Dannert, T., Dubuit, N., Dux, R., Fuchs, C., ...

Experimental observations on core particle and impurity transport from the Axial Symmetric Divertor Experiment Upgrade [O. Gruber, H.-S. Bosch, S. Gunter , Nucl Fusion 39, 1321 (1999)] and the Joint...

Overview of ASDEX Upgrade results-development of integrated operating scenarios for ITER (2005)

Günter,S., Angioni,C., Apostoliceanu,M., Atanasiu,C., Balden,M., Becker,G., ...

This article based on the 2004 Fusion Energy Conference contribution (Vilamoura, Portugal, 1-6 November 2004)

Overview of ASDEX Upgrade results-development of integrated operating scenarios for ITER (2005)

Günter, S., Angioni, C., Apostoliceanu, M., Atanasiu, C., Balden, M., Becker, G., ...

This article based on the 2004 Fusion Energy Conference contribution (Vilamoura, Portugal, 1-6 November 2004)

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...

Sawtooth control in fusion plasmas (2005)

Graves, J. P., Angioni, C., Budny, R. V., Buttery, R. J., Coda, S., Eriksson, L. G., ...

Clear observations of early triggering of neo-classical tearing modes by sawteeth with long quiescent periods have motivated recent efforts to control, and in particular destabilize, sawteeth. One...

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...

Physics of transport in tokamaks (2004)

Garbet, X., Mantica, P., Angioni, C., Asp, E., Baranov, Y., Bourdelle, C., ...

This paper is an overview of recent results relating to turbulent particle and heat transport, and to the triggering of internal transport barriers (ITBs). The dependence of the turbulent particle...

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

Physics of Transport in Tokamaks (2004)

Garbet, X., Mantica, P., Angioni, C., Asp, E., Baranov, Y., Bourdelle, C., ...

Plasma Physics and Controlled Fusion Vol.46 Nr.12B, B557 - B574

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...

Theory-based modeling of particle transport in ASDEX Upgrade H-mode plasmas, density peaking, anomalous pinch and collisionality (2003)

Angioni,C., Peeters,A. G., Pereverzev,G. V., Ryter,F., Tardini,G.

The theoretical prediction of density profiles in tokamak plasmas plays a major role for the prediction of the plasma performance in a fusion reactor. The density peaking measured in plasmas in high...

Turbulent particle transport in magnetized plasmas (2003)

Garbet,X., Garzotti,L., Mantica,P., Nordman,H., Valovic,M., Weisen,H., ...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an...

Density peaking, anomalous pinch, and collisionality in Tokamak plasmas (2003)

Angioni,C., Peeters,A. G., Pereverzev,G. V., Ryter,F., Tardini,G.

The existence of an anomalous particle pinch in magnetized tokamak plasmas is still questioned. Contradictory observations have been collected so far in tokamaks. Clear experimental evidence that...

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...

Control of the sawtooth instability by electron cyclotron heating and current drive in the TCV and ASDEX Upgrade tokamaks (2003)

Goodman,T. P., Mück,A., Angioni,C., Henderson,M. A., Sauter,O., Ryter,F., ...

Recently, there has been increased interest in avoiding the destabilization of neoclassical tearing modes (NTMs) by controlling the sawtooth instability which frequently provides a large enough seed...

Effects of localized electron heating and current drive on the sawtooth period (2003)

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

Localized electron heating and current drive, like those produced by electron cyclotron heating (ECH) systems, are powerful tools for controlling the sawtooth period. They allow the direct...

Sawtooth, neo-classical tearing mode and error field studies in JET (2003)

Hender,T. C., Sauter,O., Alper,B., Angioni,C., De Baar,M. R., De Benedetti,M., ...

A range of ITER relevant plasma stability issues has been studied in the JET tokamak; these include the effects of fast particles on sawteeth, control of NTMs via sawtooth seeds, scaling of m=2, n=1...

Overview of ASDEX Upgrade results (2003)

Zohm,H., Angioni,C., Arslanbekov,R., Atanasiu,C., Becker,G., Becker,W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

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...

Theory-based modeling of particle transport in ASDEX Upgrade H-mode plasmas, density peaking, anomalous pinch and collisionality (2003)

Angioni, C., Peeters, A. G., Pereverzev, G. V., Ryter, F., Tardini, G., ASDEX Upgrade Team

The theoretical prediction of density profiles in tokamak plasmas plays a major role for the prediction of the plasma performance in a fusion reactor. The density peaking measured in plasmas in high...

Turbulent particle transport in magnetized plasmas (2003)

Garbet, X., Garzotti, L., Mantica, P., Nordman, H., Valovic, M., Weisen, H., ...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an...

Density peaking, anomalous pinch, and collisionality in Tokamak plasmas (2003)

Angioni, C., Peeters, A. G., Pereverzev, G. V., Ryter, F., Tardini, G., ASDEX Upgrade Team

The existence of an anomalous particle pinch in magnetized tokamak plasmas is still questioned. Contradictory observations have been collected so far in tokamaks. Clear experimental evidence that...

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...

Control of the sawtooth instability by electron cyclotron heating and current drive in the TCV and ASDEX Upgrade tokamaks (2003)

Goodman, T.P., Mück, A., Angioni, C., Henderson, M.A., Sauter, O., Ryter, F., ...

Recently, there has been increased interest in avoiding the destabilization of neoclassical tearing modes (NTMs) by controlling the sawtooth instability which frequently provides a large enough seed...

Effects of localized electron heating and current drive on the sawtooth period (2003)

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

Localized electron heating and current drive, like those produced by electron cyclotron heating (ECH) systems, are powerful tools for controlling the sawtooth period. They allow the direct...

Sawtooth, neo-classical tearing mode and error field studies in JET (2003)

Hender, T. C., Sauter, O., Alper, B., Angioni, C., De Baar, M. R., De Benedetti, M., ...

A range of ITER relevant plasma stability issues has been studied in the JET tokamak; these include the effects of fast particles on sawteeth, control of NTMs via sawtooth seeds, scaling of m=2, n=1...

Overview of ASDEX Upgrade results (2003)

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Overview of ASDEX upgrade results (2003)

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., ...

Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model...

Overview of JET results (2003)

Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...

Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...

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...

Turbulent particle transport in magnetized plasmas (2003)

Garbet, X., Garzotti, L., Mantica, P., Nordman, H., Valovic, M., Weisen, H., ...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an...

Effects of localized electron heating and current drive on the sawtooth period (2003)

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

Localized electron heating and current drive, like those produced by electron cyclotron heating (ECH) systems, are powerful tools for controlling the sawtooth period. They allow the direct...

Control of sawteeth and triggering of NTMs with ion cyclotron resonance frequency waves in JET (2002)

Westerhof,E., Sauter,O., Mayoral,M. L., Howell,D. F., Mantsinen,M. J., Nave,M. F. F., ...

A new scenario to delay or prevent neoclassical tearing mode (NTM) onset is presented. By active sawtooth destabilization, short period and low amplitude sawteeth are generated, such that the...

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...

Control of sawteeth and triggering of NTMs with ion cyclotron resonance frequency waves in JET (2002)

Westerhof, E., Sauter, O., Mayoral, M. L., Howell, D. F., Mantsinen, M. J., Nave, M. F. F., ...

A new scenario to delay or prevent neoclassical tearing mode (NTM) onset is presented. By active sawtooth destabilization, short period and low amplitude sawteeth are generated, such that the...

Control of sawteeth and triggering of NTMs with ion cyclotron resonance frequency waves in JET (2002)

Westerhof, E., Sauter, O., Mayoral, M. L., Howell, D. F., Mantsinen, M. J., Nave, M. F. F., ...

A new scenario to delay or prevent neoclassical tearing mode (NTM) onset is presented. By active sawtooth destabilization, short period and low amplitude sawteeth are generated, such that the...

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...

Analysis of ion cyclotron heating and current drive at omega approximate to 2 omega(cH) for sawtooth control in JET plasmas (2002)

Mantsinen, M. J., Angioni, C., Eriksson, L. G., Gondhalekar, A., Hellsten, T., Johnson, T., ...

Ion cyclotron heating and current drive at omega approximate to 2omega(cH) in JET deuterium plasmas with a hydrogen concentration n(H)/(n(D)+n(H)) in the range of 5-15% are analysed, comparing...

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...

Neutral beam stabilization of sawtooth oscillations in JET (2002)

Angioni, C., Pochelon, A., Gorelenkov, N. N., McClements, K. G., Sauter, O., Budny, R. V., ...

Recent experiments in the Joint European Torus (JET) have provided evidence of sawtooth stabilization by fast ions arising from deuterium neutral beam injection (NBI). A possible theoretical basis...

Sawtooth, Neo-Classical Tearing Mode and Error Field Studies in JET (2002)

T.C. Hender, O. Sauter, B. Alper, C. Angioni, M. Baar, M. Benedetti, ...

A range of ITER relevant plasma stability issues have been studied in the JET tokamak; these include the effects of fast particles on sawteeth, control of NTMs via sawteeth seeds, scaling of (2,1)...

Experimental studies of electron transport (2001)

Ryter, F., Angioni, C., Beurskens, M., Cirant, S., Hoang, G. T., Hogeweij, G. M. D., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/43/12A/325

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 ,...

Experimental studies of electron transport (2001)

Ryter, F., Angioni, C., Beurskens, M., Cirant, S., Hoang, G. T., Hogeweij, G. M. D., ...

Electron transport in tokamaks has many different features which are briefly reviewed. The paper is focused on electron heat transport in conventional tokamak plasmas. An inter-machine comparison...

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...

Long-pulse improved central electron confinement in the TCV tokamak with electron cyclotron heating and current drive (2001)

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

Current profile tailoring by electron cyclotron heating (ECH) and current drive (ECCD) is used to improve central electron energy confinement in the TCV tokamak. Counter-ECCD on axis alone achieves...

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...

Central electron temperature enhancements due to sawtooth stabilization during counter electron cyclotron current drive in Tokamak a Configuration Variable (2000)

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

In the Tokamak a Configuration Variable (TCV), the central electron temperature obtained in discharges with counter (CNTR) electron cyclotron current drive (ECCD) is larger than with CO-ECCD or...

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...

Neoclassical transport coefficients for general axisymmetric equilibria in the banana regime (2000)

Angioni, C., Sauter, O.

Using the standard approach of neoclassical theory, a set of relatively simple kinetic equations has been obtained, suited for an implementation in a numerical code to compute a related set of...

Neoclassical conductivity and bootstrap current formulas for general axisymmetric equilibria and arbitrary collisionality regime (1999)

Sauter, O., Angioni, C., Lin-Liu, Y. R.

Expressions for the neoclassical resistivity and the bootstrap current coefficients in terms of aspect ratio and collisionality are widely used in simulating toroidal axisymmetric equilibria and...

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...