Speaker
Dr
Timo Kiviniemi
(Aalto University)
Description
The global full f nonlinear gyrokinetic code ELMFIRE is used for simulating geodesic acoustic modes (GAMs) over a wide range of parameters. For radial wavelength of GAMs, the agreement between analytic value and simulation results is shown to be good for low collisional regime which is not the case with high collisionality. The isotope scan considering hydrogen, deuterium, tritium and helium was done changing the isotope while keeping all the other parameters fixed. The speed of the radial GAM propagation is shown decrease and radial wavelength is shown to increase as a function of mass. Results are compared to analytic estimates and experimental measurements at the FT–2 and Textor tokamaks.
| Country or International Organisation | Finland |
|---|---|
| Paper Number | TH/P5-6 |
Primary author
Dr
Timo Kiviniemi
(Aalto University)
Co-authors
Dr
Jukka Heikkinen
(Aalto University)
Mr
Paavo Niskala
(Aalto University)
Dr
Susan Leerink
(Aalto University)
Mr
Tuomas Korpilo
(Aalto University)
