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Oct 13 – 18, 2014
Hotel Park Inn Pribaltiyskaya
Europe/Moscow timezone

Global Gyrokinetic Modeling of Geodesic Acoustic Modes and Shear Alfvén Instabilities in ASDEX Upgrade

Oct 14, 2014, 8:30 AM
4h
Green 8-9 (Hotel Park Inn Pribaltiyskaya)

Green 8-9

Hotel Park Inn Pribaltiyskaya

Saint Petersburg, Russian Federation
Poster Poster 1

Speaker

Dr Alessandro Biancalani (Max-Planck-Institut für Plasmaphysik Euratom Association, Garching, Germany)

Description

In this work, we investigate theoretically the dynamics of global instabilities observed in ASDEX Upgrade (AUG) by means of collisionless numerical simulations. We focus in particular on geodesic acoustic modes (GAM) and shear Alfven instabilities. The numerical tools we use are the codes NEMORB (nonlinear global gyrokinetic PIC), LIGKA (linear global gyrokinetic) and XHMGC (nonlinear global hybrid). In the first part of this work, results of axisymmetric simulations of GAMs with gyrokinetic codes NEMORB and LIGKA with AUG equilibrium profiles are shown. In the second part, we show results of axisymmetric electromagnetic simulations with NEMORB and LIGKA in the presence of an EP population. Finally, in the third part, we show results of single-n (with n the toroidal mode number) numerical simulations of shear Alfven instabilities with NEMORB, LIGKA and XHMGC. Comparisons with analytical theory and experimental data are also shown, for each case of interest.
Country or International Organisation Germany
Paper Number EX/P1-18

Primary author

Dr Alessandro Biancalani (Max-Planck-Institut für Plasmaphysik Euratom Association, Garching, Germany)

Co-authors

Dr Alberto Bottino (Max-Planck-Institut für Plasmaphysik, Garching, Germany) Dr Bruce Scott (Max-Planck-Institut für Plasmaphysik, Garching, Germany) Dr Claudio Di Troia (Associazione Euratom-ENEA sulla Fusione, C.P. 65-I-00044-Frascati, Rome, Italy) Dr David Zarzoso (Max-Planck-Institut für plasmaphysik, 85748 Garching, Germany) Fulvio Zonca (Associazione EURATOM-ENEA sulla Fusione) Dr Garrard Conway (Max-Planck-Institut fuer Plasmaphysik) Dr Gregorio Vlad (Associazione Euratom-ENEA sulla Fusione, C.P. 65-I-00044-Frascati, Rome, Italy) Dr Patrick Simon (Max-Planck-Institut für Plasmaphysik, Garching, Germany) Dr Philipp Lauber (Max-Planck-Institut für Plasmaphysik, Garching, Germany) Dr Sergio Briguglio (Associazione Euratom-ENEA sulla Fusione, C.P. 65-I-00044-Frascati, Rome, Italy) Dr Xin Wang (Max-Planck-Institute für Plasmaphysik, 85748 Garching, Germany)

Presentation materials