1.5 Plasma Stabilization by Feedback

1970 ◽  
Author(s):  
J. B. Taylor ◽  
C. N. Lashmore-Davies ◽  
Hugh C. Wolfe ◽  
T. K. Chu ◽  
H. W. Hendel
Keyword(s):  
Plasma Stabilization

Plasma stability theory including the resistive wall effects

2015 ◽  
Vol 81 (6) ◽  
Author(s):  
V. D. Pustovitov
Keyword(s):  
Stability Theory ◽  
Nonlinear Function ◽  
Thin Wall ◽  
Conducting Wall ◽  
Resistive Wall ◽  
Energy Sink ◽  
The Stability ◽  
Resistive Wall Modes ◽  
Complex Growth Rate ◽  
Plasma Stabilization

Plasma stabilization due to a nearby conducting wall can provide access to better performance in some scenarios in tokamaks. This was proved by experiments with an essential gain in${\it\beta}$and demonstrated as a long-lasting effect at sufficiently fast plasma rotation in the DIII-D tokamak (see, for example, Straitet al.,Nucl. Fusion, vol. 43, 2003, pp. 430–440). The rotational stabilization is the central topic of this review, though eventually the mode rotation gains significance. The analysis is based on the first-principle equations describing the energy balance with dissipation in the resistive wall. The method emphasizes derivation of the dispersion relations for the modes which are faster than the conventional resistive wall modes, but slower than the ideal magnetohydrodynamics modes. Both the standard thin wall and ideal-wall approximations are not valid in this range. Here, these are replaced by an approach incorporating the skin effect in the wall. This new element in the stability theory makes the energy sink a nonlinear function of the complex growth rate. An important consequence is that a mode rotating above a critical level can provide a damping effect sufficient for instability suppression. Estimates are given and applications are discussed.

Plasma stabilization by a high-frequency rotational field

1972 ◽  
Vol 12 (2) ◽  
pp. 151-156 ◽  
Author(s):  
R.A. Demirkhanov ◽  
T.I. Gutkin ◽  
Yu.V. Kursanov ◽  
Yu.N. Gubin ◽  
L.Ya. Malykh
Keyword(s):  
High Frequency ◽  
Rotational Field ◽  
Plasma Stabilization

A nonconventional power converter for plasma stabilization

1990 ◽  
Vol 5 (2) ◽  
pp. 212-219 ◽  
Author(s):  
M. Marchesoni ◽  
M. Mazzucchelli ◽  
S. Tenconi
Keyword(s):  
Power Converter ◽  
Plasma Stabilization

Plasma Stabilization Conducting Shells and their Impact on TBR and Activation in CLiFF Design

2001 ◽  
Vol 39 (2P2) ◽  
pp. 804-809
Author(s):  
Mahmoud Z. Youssef ◽  
Hesham Khater ◽  
Mike Kotschenreuther
Keyword(s):  
Plasma Stabilization

A non conventional power converter for plasma stabilization

2003 ◽  
Author(s):  
M. Marchesoni ◽  
M. Mazzucchelli ◽  
S. Tenconi
Keyword(s):  
Power Converter ◽  
Plasma Stabilization

MHD plasma stabilization in a chain of axisymmetric adiabatic open mirror cells

2009 ◽  
Vol 35 (12) ◽  
pp. 995-1004 ◽  
Author(s):  
V. V. Arsenin ◽  
P. N. Terekhin
Keyword(s):  
A Chain ◽  
Plasma Stabilization
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