19. March 2024, 16:00 until 17:00

Lidija Radovanovic, Institute of Applied Physics, TU Wien

Seminar

Exploring the influence of plasma triangularity on pedestal stability and structure in ASDEX Upgrade

The confinement and the performance of a tokamak plasma in the high confinement regime are closely related to the structure of the plasma edge region, the so-called pedestal. In this region, density and temperature of the plasma drastically drop, acting as an insulator for the core of a fusion plasma. One possible factor limiting the pedestal width is the onset of instabilities, kinetic ballooning modes, at the top of the pedestal which we approximate by local ideal ballooning modes. The stability of these modes can be altered by varying the plasma shape. The results show that different physical mechanisms influence the pedestal width of electrons and ions with respect to their density and temperature. These individual effects are nevertheless conditioned by the overall limit on the total pressure, set by the ideal magnetohydrodynamic (MHD) stability.

Calendar entry

Event location

SEM.R. DB gelb 05 B
1040 Wien
Wiedner Hauptstraße 8-10/E134

 

Organiser

IAP
Manuela Marik
marik@iap.tuwien.ac.at

 

Public

Yes

 

Entrance fee

No

 

Registration required

No