Rotation reversal of tokamak plasma subject to tearing-mode under resonant magnetic perturbation

2019 ◽  
Vol 26 (5) ◽  
pp. 052513 ◽  
Author(s):  
N. V. Ivanov ◽  
A. M. Kakurin
Keyword(s):  
Tokamak Plasma ◽  
Tearing Mode ◽  
Magnetic Perturbation

Efficient estimation of drift orbit island width for passing ions in a shaped tokamak plasma with a static magnetic perturbation

2020 ◽  
Vol 60 (9) ◽  
pp. 096032
Author(s):  
Kouji Shinohara ◽  
Andreas Bierwage ◽  
Akinobu Matsuyama ◽  
Yasuhiro Suzuki ◽  
Go Matsunaga ◽  
...  
Keyword(s):  
Efficient Estimation ◽  
Tokamak Plasma ◽  
Magnetic Perturbation

A linear model for the tearing mode of a tokamak plasma with flow and a resistive wall boundary condition

1983 ◽  
Vol 30 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Torkil H. Jensen ◽  
Ming S. Chu
Keyword(s):  
Growth Rates ◽  
Circular Cross Section ◽  
Tokamak Plasma ◽  
Complex Eigenvalue ◽  
Tearing Mode ◽  
Conducting Wall ◽  
Resistive Wall ◽  
Small Flow ◽  
Infinite Conductivity ◽  
Flow Velocities

The tearing mode of a tokamak plasma without flow may be stabilized by the presence of a conducting wall surrounding the plasma. When the wall has a finite resistivity, its presence does not affect stability, only growth rates. If, however the plasma has a flow relative to the resistive wall, both stability and growth rates may be affected. For the cylindrical, circular cross-section tokamak the problem is formulated as a complex eigenvalue problem, with a complex eigenvalue Δ', which in the limit of vanishing flow becomes identical to the usual ‘delta prime’. The real part of Δ' describes as usual the power absorbed at the singular surface while the imaginary part describes absorption of momentum. It is found that for a plasma with shearless flow, a resistive wall has a stabilizing effect which even for relatively small flow velocities approaches that of a wall of infinite conductivity. Shear flow is found inherently destabilizing, but important only for very large flow velocities.

Tearing mode suppression by using resonant magnetic perturbation coils on J-TEXT tokamak

2013 ◽  
Vol 377 (3-4) ◽  
pp. 315-318 ◽  
Author(s):  
B. Rao ◽  
Y.H. Ding ◽  
Q.M. Hu ◽  
W.F. Shi ◽  
X.Q. Zhang ◽  
...  
Keyword(s):  
Tearing Mode ◽  
Magnetic Perturbation ◽  
Mode Suppression

scholarly journals Finite ion orbit width effect on the neoclassical tearing mode threshold in a tokamak plasma

2019 ◽  
Vol 59 (4) ◽  
pp. 046016 ◽  
Author(s):  
K. Imada ◽  
H.R. Wilson ◽  
J.W. Connor ◽  
A.V. Dudkovskaia ◽  
P. Hill
Keyword(s):  
Tokamak Plasma ◽  
Tearing Mode ◽  
Width Effect ◽  
Neoclassical Tearing Mode

Resonant magnetic perturbation effect on tearing mode dynamics

2010 ◽  
Vol 50 (3) ◽  
pp. 035005 ◽  
Author(s):  
L. Frassinetti ◽  
K.E.J. Olofsson ◽  
P.R. Brunsell ◽  
J.R. Drake
Keyword(s):  
Tearing Mode ◽  
Magnetic Perturbation ◽  
Perturbation Effect

Design of the In-Vessel Magnetic Coils for Generating a Rotating Resonant Magnetic Perturbation on the J-TEXT Tokamak Plasma

2012 ◽  
Vol 22 (3) ◽  
pp. 4201804-4201804 ◽  
Author(s):  
B. Rao ◽  
G. Zhuang ◽  
M. Zhang ◽  
Y. H. Ding ◽  
K. X. Yu ◽  
...  
Keyword(s):  
Tokamak Plasma ◽  
Magnetic Perturbation ◽  
Magnetic Coils
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