scholarly journals Core turbulence behavior moving from ion-temperature-gradient regime towards trapped-electron-mode regime in the ASDEX Upgrade tokamak and comparison with gyrokinetic simulation

2015 ◽  
Vol 22 (3) ◽  
pp. 032503 ◽  
Author(s):  
T. Happel ◽  
A. Bañón Navarro ◽  
G. D. Conway ◽  
C. Angioni ◽  
M. Bernert ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Electron Mode ◽  
Trapped Electron

scholarly journals Transport through dissipative trapped electron mode and toroidal ion temperature gradient mode in TEXTOR

1988 ◽  
Vol 28 (6) ◽  
pp. 1053-1073 ◽  
Author(s):  
A. Rogister ◽  
G. Hasselberg ◽  
F.G. Waelbroeck ◽  
J. Weiland
Keyword(s):  
Temperature Gradient ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Electron Mode ◽  
Trapped Electron ◽  
Gradient Mode

Properties of ion temperature gradient and trapped electron modes in tokamak plasmas with inverted density profiles

2017 ◽  
Vol 24 (12) ◽  
pp. 122501 ◽  
Author(s):  
Huarong Du ◽  
Hogun Jhang ◽  
T. S. Hahm ◽  
J. Q. Dong ◽  
Z. X. Wang
Keyword(s):  
Temperature Gradient ◽  
Tokamak Plasmas ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Density Profiles ◽  
Trapped Electron

Collisionless trapped electron and ion temperature gradient modes in an advanced tokamak equilibrium

2009 ◽  
Vol 16 (2) ◽  
pp. 022503 ◽  
Author(s):  
M. Ansar Mahmood ◽  
T. Rafiq ◽  
M. Persson ◽  
J. Weiland
Keyword(s):  
Temperature Gradient ◽  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Trapped Electron

Sensitivity of kinetic ballooning mode instability to tokamak equilibrium implementations

2016 ◽  
Vol 82 (5) ◽  
Author(s):  
H. S. Xie ◽  
Y. Xiao ◽  
I. Holod ◽  
Z. Lin ◽  
E. A. Belli
Keyword(s):  
Ion Temperature ◽  
Ion Temperature Gradient ◽  
Order Difference ◽  
Ballooning Mode ◽  
Electron Mode ◽  
Tokamak Edge ◽  
Global Equilibrium ◽  
Global Profile ◽  
Shafranov Shift ◽  
Trapped Electron

Global, first-principles study of the kinetic ballooning mode (KBM) is crucial to understand tokamak edge physics in high-confinement mode (H-mode). In contrast to the ion temperature gradient mode and trapped electron mode, the KBM is found to be very sensitive to the equilibrium implementations in gyrokinetic codes. In this paper, we show that a second-order difference in Shafranov shift or geometric coordinates, or a difference between local and global profile implementations can bring a factor of two or more discrepancy in real frequency and growth rate. This suggests that an accurate global equilibrium is required for validation of gyrokinetic KBM simulations.

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