Measurement of the damping rate of stable AEs on the (2008)
D. Testa, A. Fasoli, A. Jaun, T. Bolzonella, C. D. Challis, J. Mailloux, ...
JET tokamak in limiter and diverted plasmas with monotonic and non-monotonic q-profiles.
Parasitic Absorption By Fusion Born α-particles in ICRF Heated Plasmas (2007)
J. Hedin, J. Carlsson, T. Hellsten, A. Jaun
Abstract. A method has been developed to calculate the dielectric tensor in a
Chapter 5: Physics of energetic ions (2007)
Fasoli, A., Gormenzano, C., Berk, H.L., Breizman, B., Briguglio, S., Darrow, D.S., ...
On resonance absorption and continuum damping (vol 5, pg 3801, 1998) (2007)
Jaun, A., Appert, K., Hellsten, T., Vaclavik, J., Villard, L.
Chapter 5: Physics of energetic ions (2007)
Fasoli, A., Gormenzano, C., Berk, H. L., Breizman, B., Briguglio, S., Darrow, D. S., ...
This chapter reviews the progress accomplished since the redaction of the first ITER Physics Basis (1999 Nucl. Fusion 39 2137-664) in the field of energetic ion physics and its possible impact on...
Chapter 5: Physics of energetic ions (2007)
FASOLI, A, GORMENZANO, C, BERK, HL, BREIZMAN, B, BRIGUGLIO, S, DARROW, DS, ...
Alfvén wave stability and fast ion distributions in ITER relevant scenarios (2003)
Testa, D., Fasoli, A., Jaun, A., Mantsinen, M., Beaumont, P.
Experimental test of damping models for n=1 toroidal Alfven eigenmodes in JET (2003)
Testa, D., Fu, G. Y., Jaun, A., Fasoli, A., Sauter, O.
The damping rate of the n = 1 toroidal Alfven eigenmodes (TAE) mode in Ohmic-heated JET plasmas has been measured and compared with the prediction of the kinetic NOVA-K code, which includes electron...
Testa, D., Fasoli, A., Jaun, A.
The dependence of the measured damping rate upon the neutral beam heating power (P-NBI) and plasma beta has been experimentally investigated for n = 1 toroidal Alfven eigenmodes (TAEs) in JET limiter...
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...
Experimental study of the stability of Alfvén eigenmodes on JET (2002)
Testa, D., Fasoli, A., G., Fu, Jaun, A., Borba, D., De.Vries, P.
Measurement of Alfvén Waves on the JET Tokamak (2002)
Testa, D., Fasoli, A., Borba, D.N., G.Y., Fu, Jaun, A., Mantsinen, M.J., ...
Gyrokinetic modelling of macro-instabilities in high performance tokamak plasmas (2001)
Jaun, A., Fasoli, A., Testa, D., Vaclavik, J., Villard, L.
The modelling of Alfvenic instabilities is discussed from the point of view of mode-conversion, showing how the development of the theory affects the predictions as the limitations of the models are...
Stability of Alfven eigenmodes in optimized tokamaks (2000)
Jaun, A., Fasoli, A., Vaclavik, J., Villard, L.
Alfven eigenmodes (AEs) with intermediate toroidal mode numbers are modelled using the global gyrokinetic PENN code to determine the stability of high performance tokamak discharges in the presence...
Global Alfven eigenmode stability in thermonuclear tokamak plasmas (1999)
Jaun, A., Fasoli, A., Vaclavik, J., Villard, L.
Relying on the good agreement observed between the gyrokinetic PENN model and the low toroidal mode number n damping measurements from JET, the stability of Alfven eigenmodes (AEs) is predicted for...
On resonance absorption and continuum damping (1998)
Jaun, A., Appert, K., Hellsten, T., Vaclavik, J., Villard, L.
Toroidal mode conversion in the ICRF (1998)
Jaun, A., Hellsten, T., Chiu, S. C.
Mode conversion is studied in the ion cyclotron range of frequencies (ICRF), taking into account the toroidal geometry relevant for tokamaks. The global wavefields obtained using the gyrokinetic...
Prediction of Alfven eigenmode dampings in the Joint European Torus (1998)
Jaun, A., Fasoli, A., Heidbrink, W. W.
Predictions from a gyrokinetic toroidal plasma model reproduce for the first time the evolution of Alfven eigenmode (AE) dampings over a range of discharges. The coupling between shear-and...
On resonance absorption and continuum damping (1998)
Jaun, A., Appert, K., Hellsten, T., Vaclavik, J., Villard, L.
The absorption of power is studied with fluid and gyrokinetic plasma models, when Alfven resonances provide for a weak damping in a partially standing wave field. Examples chosen in slab and toroidal...
Experimental studies of Alfvén eigenmode stability in JET D-T plasmas (1997)
Fasoli, A., Heeter, R., Borba, D., Gorezano, C., Sharapov, S., Jaun, A.
Kinetic Alfvén eigenmodes in a hot tokamak plasma (1997)
Jaun, A., Appert, K., Fasoli, A., Hellsten, T., Lister, J.B., Vaclavik, J., ...
Stability of global drift-kinetic Alfven eigenmodes in DIII-D (1997)
Jaun, A., Vaclavik, J., Villard, L.
Global Alfven eigenmodes are studied using two different models for the plasma and the results compared with the instability threshold measured experimentally. Fluid-resistive models predict that...
Kinetic Alfven eigenmodes in a hot tokamak plasma (1997)
Jaun, A., Appert, K., Fasoli, A., Hellsten, T., Lister, J., Vaclavik, J., ...
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...
Stable ellipticity-induced Alfven eigenmodes in the Joint European Torus (1997)
Heidbrink, W. W., Fasoli, A., Borba, D., Jaun, A.
An external antenna excites stable eigenmodes in elongated Ohmically heated plasmas in the Joint European Torus (JET) [P.-H. Rebut, R. J. Bickerton, and B. E. Keen, Nucl. Fusion 25, 1011 (1985)]. The...
Alfven eigenmode experiments in tokamaks and stellarators (1997)
Fasoli, A., Borba, D., Gormezano, C., Heeter, R., Jaun, A., Jacquinot, J., ...
In tokamaks and stellarators, measurements of electromagnetic fluctuations in the presence of resonant particle drive, including fusion-produced alpha's, reveal the excitation of Alfven eigenmodes...
On resonance absorption and continuum damping (1997)
Jaun, A., Appert, K., Hellsten, T., Vaclavik, J., Villard, L.
Kinetic Alfvén eigenmodes in JET and DIII-D (1996)
Jaun, A., Hellsten, T., Appert, K., Fasoli, A., Lister, J.B., Vaclavik, J., ...
Observation of multiple kinetic Alfven eigenmodes (1996)
Fasoli, A., Lister, J. B., Sharapov, S., Borba, D., Deliyanakis, N., Gormezano, C., ...
Multiple weakly damped Alfven eigenmodes (AE) have been excited and detected by means of a dedicated active diagnostic in JET tokamak plasmas heated by ion cyclotron resonance heating, neutral beam...
Direct measurement of TAE, EAE and multiple kinetic TAE in JET (1995)
Fasoli, A., Borba, D., Delyanakis, N., Dobbing, J.A., Campbell, D.J., Gormezano, C., ...
Alfvén Eigenmode studies in JET (1995)
Fasoli, A., Lister, J.B., Sharapov, S., Ali-Arshad, S., Bosia, D., Borba, G., ...
Alfven wave heating and stability (1995)
Villard, L., Brunner, S., Jaun, A., Vaclavik, J.
Alfven waves in fusion plasmas play an important role in a number of situations. First, in Alfven Wave Heating (AWH) schemes. Second, both theory and experiment have demonstrated the existence of...
Global Waves in Resistive and Hot Tokamak Plasmas (1995)
Jaun, A., Appert, K., Vaclavik, J., Villard, L.
Maxwell's equations are solved in a toroidal axisymmetric plasma. The numerical method implemented in the PENN code is based on a formulation in terms of the electromagnetic potentials and a...
Overview of alfven eigenmode experiments in jet (1995)
Fasoli, A., Lister, J. B., Sharapov, S. E., AliArshad, S., Bosia, G., Borba, D., ...
Results from the first experiments to drive Alfven Eigenmodes (AEs) with antennas external to a tokamak plasma are presented. In ohmically heated plasma discharges, direct experimental measurements...
Observation of multiple kinetic Alfvén eigenmodes (1995)
Fasoli, A., Lister, J.B., Sharapov, S., Borba, D., Deliyanakis, N., Gormezano, C., ...
Overview of Alfvén eigenmode experiments in JET (1995)
Fasoli, A., Lister, J.B., Sharapov, S., Jaun, A., Lavanchy, P., ...
Linear wave propagation in resistive/hot tokamak plasmas (1994)
Jaun, A., Lütjens, H., Appert, K., Vaclavik, J., Villard, L.
Equilibrium Gradient Effects in the Theory of Alfven-Wave Heating (1991)
Jaun, A., Vaclavik, J., Appert, K.
An explicit expression for the local power absorption density in a uniformly-magnetized slab plasma is derived from the Vlasov-Maxwell equations, taking into account density and temperature...