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Measurement of the Radial Profile of the Plasma Isotopic Composition in JET Plasmas Using Alfven Eigenmodes

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Beam driven Alfven eigenmodes and fishbones in JET

Ambrogio Fasoli

Fast particle driven instabilities are investigated at low toroidal field B-0 approximate to 1 T in tritium, deuterium and hydrogen plasmas. Tritium, deuterium and hydrogen neutral beams with energies of 160, 140 and 110 keV were injected, respectively, in ...

2000

Physics of high performance JET plasmas in DT

The Joint European Torus (JET) has recently operated with deuterium-tritium (DT) mixtures, carried out an International Thermonuclear Experimental Reactor (ITER) physics campaign in hydrogen, deuterium, DT and tritium, installed the Mark IIGB 'Gas Box' div ...

1999

D-T fusion with ion cyclotron resonance heating in the JET tokamak

Ambrogio Fasoli

Ion cyclotron resonance heating (ICRH) experiments have been carried out in JET D-T plasmas using scenarios applicable to reactors. Deuterium minority heating in tritium plasmas is used for the first time and produces 1.66 MW of D-T fusion power for an ICR ...

1998

Measurement of the effective plasma ion mass in large tokamaks using global Alfven eigenmodes

Laurent Villard, Jonathan Bryan Lister

There is not yet a straightforward method for determining the D-T ratio in the centre of a tokamak plasma. One of the simpler measurements put forward in the past is the interpretation of the MHD spectrum in the frequency range of the global Alfven eigenmo ...

1998

High performance Joint European Torus (JET) plasmas for deuterium-tritium operation with the MkII divertor

Ambrogio Fasoli, Laurie Porte, Luca Rossi, Dalziel Joseph Wilson, Denis Martin, Hairun Guo

Planned experiments in the Joint European Torus [Plasma Physics and Controlled Fusion Research, Proceedings, 13th International Conference, Washington, D.C., 1990 (International Atomic Energy Agency, Vienna, 1991), Vol. 1, p. 27] (JET) with deuterium-triti ...

1997

Kinetic Alfven eigenmodes in a hot tokamak plasma

Ambrogio Fasoli, Laurent Villard, Jonathan Bryan Lister, Kurt Appert

Kinetic effects such as finite ion Larmor excursions and resonant Landau interactions are studied in the toroidicity Alfven eigenmode (TAE) range of frequencies. A new Alfven mode conversion mechanism is described taking place away from the resonances thro ...

1997

Transport Studies for Ignition Experiments

The results of a predictive study of plasma energy confinement in Ignitor, performed with a 1 1/2-dimensional transport code and the Tang-Redi transport model, are reported. For comparison, performance predictions for the Next European Torus (NET), adoptin ...

1993

Test-Ion Diffusion in a Magnetized Plasma

Ambrogio Fasoli, Minh Quang Tran

Cross-field transport of barium test ions is studied in a Q-machine plasma. Test particles are produced and tracked in their motion by an optical tagging method. The comparison between the measured tag signal and a simple theoretical simulation yields a qu ...

1992

Cold Boronization in Tca

Basil Duval, Christoph Hollenstein

Boronisation of the TCA vacuum vessel was performed at ambient temperature. The paper presents detailed surface analysis of the coating and a description of the tokamak performance after boronisation. The obtained coatings showed a film composition close t ...

1990