Speaker
Miklos Porkolab
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P4.1002.pdf
Recent simulations of Toroidal Alfvén Eigenmodes on JET with the
Gyrokinetic Toroidal Code
V. Aslanyan1 , M. Porkolab1 , S. Taimourzadeh2 , L. Shi2 , Z. Lin2 , G. Dong3 , P. Puglia4 ,
S. E. Sharapov5 , J. Mailloux5 , M. Tsalas5 , M. Maslov5 , A. Whitehead5 , R. Scannell5 ,
S. Gerasimov5 , S. Dorling5 , S. Dowson5 , H. K. Sheikh5 , T. Blackman5 , G. Jones5 ,
A. Goodyear5 , K. K. Kirov5 , R. Dumont6 , P. Blanchard4 , A. Fasoli4 ,
D. Testa4 and JET Contributors∗
EUROfusion Consortium, JET, Culham Science Centre, Abingdon, OX14 3DB, UK
1 MIT PSFC, 175 Albany Street, Cambridge, Massachusetts 02139, USA
2 Department of Physics and Astronomy, UCI, California 92697, USA
3 PPPL, Princeton University, Princeton, New Jersey 08543, USA
4 Ecole Polytechnique Fédérale de Lausanne (EPFL), SPC, CH-1015 Lausanne, Switzerland
5 CCFE, Culham Science Centre, Abingdon, OX14 3DB, UK
6 CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
Recent experiments on the Joint European Torus have succeeded in destabilizing weakly-
damped Toroidal Alfvén Eigenmodes (TAEs) by Neutral Beam Injection and ICRH-generated
energetic ions. Concurrently, TAEs with insufficient drive to overcome several damping mech-
anisms (including continuum damping, radiative damping, ion and electron Landau damping)
have been resonantly probed with external antennas[1]. In both cases, the mode structure and the
drive and damping mechanisms have been computed self-consistently by Gyrokinetic Toroidal
Code (GTC)[2] and matched to measurements by magnetic probes. Energetic particle drive is
compared to a synthetic antenna in linear simulations. This work is in support of efforts to
observe alpha particle-driven in future JET DT experiments.
References
[1] P. Puglia, W. Pires de Sa, P. Blanchard, et al., “The upgraded JET toroidal Alfvén eigenmode diagnostic
system” Nucl. Fusion 56, 112020 (2016).
[2] Z. Wang, Z. Lin, I. Holod, W. W. Heidbrink, B. Tobias, M. Van Zeeland, and M. E. Austin, “Radial Local-
ization of Toroidicity-Induced Alfvén Eigenmodes” Phys. Rev. Lett. 111, 145003 (2013).
∗
See the author list of X. Litaudon et al., Nucl. Fusion 57, 102001 (2017).
