scholarly journals Role of trapped electron mode turbulence in internal transport barrier control in the Alcator C-Mod Tokamak

2004 ◽  
Vol 11 (5) ◽  
pp. 2637-2648 ◽  
Author(s):  
D. R. Ernst ◽  
P. T. Bonoli ◽  
P. J. Catto ◽  
W. Dorland ◽  
C. L. Fiore ◽  
...  
Keyword(s):  
Transport Barrier ◽  
Electron Mode ◽  
Internal Transport Barrier ◽  
Trapped Electron ◽  
Internal Transport

Bootstrap current analysis for neoclassical internal transport barrier discharge of CHS

2002 ◽  
Vol 44 (5A) ◽  
pp. A189-A195 ◽  
Author(s):  
M Isobe ◽  
N Nakajima ◽  
K Ida ◽  
T Minami ◽  
Y Yoshimura ◽  
...  
Keyword(s):  
Barrier Discharge ◽  
Current Analysis ◽  
Transport Barrier ◽  
Bootstrap Current ◽  
Internal Transport Barrier ◽  
Internal Transport

Dynamic Modeling of Stepwise Internal Transport Barrier Formation in DIII-D Negative-Central-Shear Discharges

2001 ◽  
Vol 86 (5) ◽  
pp. 814-817 ◽  
Author(s):  
J. E. Kinsey ◽  
G. M. Staebler ◽  
K. H. Burrell ◽  
M. E. Austin ◽  
R. E. Waltz
Keyword(s):  
Dynamic Modeling ◽  
Transport Barrier ◽  
Barrier Formation ◽  
Internal Transport Barrier ◽  
Internal Transport

Sustainable internal transport barrier discharges at KSTAR

2021 ◽  
Author(s):  
Jinil Chung ◽  
Sang-Hee Hahn ◽  
Hyunsun Hahn ◽  
Jisung Kang ◽  
Hyun-Seok Kim ◽  
...  
Keyword(s):  
Transport Barrier ◽  
Internal Transport Barrier ◽  
Barrier Discharges ◽  
Internal Transport

scholarly journals Reformation of the Electron Internal Transport Barrier with the Appearance of a Magnetic Island

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
N. Kenmochi ◽  
T. Minami ◽  
T. Mizuuchi ◽  
C. Takahashi ◽  
G. M. Weir ◽  
...  
Keyword(s):  
Time Scales ◽  
Outer Region ◽  
Local Heat ◽  
Magnetic Island ◽  
Transport Barrier ◽  
Confinement Region ◽  
Profile Control ◽  
Internal Transport Barrier ◽  
Fast Control ◽  
Internal Transport

AbstractWhen realising future fusion reactors, their stationary burning must be maintained and the heat flux to the divertor must be reduced. This essentially requires a stationary internal transport barrier (ITB) plasma with a fast control system. However, the time scale for determining the position of the foot point of an ITB is not clearly understood even though its understanding is indispensable for fast profile control. In this study, the foot point of the electron ITB (eITB) was observed to be reformed at the vicinity of a magnetic island when the island started to form. In addition, the enhanced confinement region was observed to expand during the eITB formation according to the radial movement of the magnetic island toward the outer region. Compared to the time scales of the local heat transport, the faster time scales of the movement of the eITB foot point immediately after island formation (~0.5 ms) suggest the importance of the magnetic island for plasma profile control to maintain stationary burning.

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