Feedback suppression of the disruptive instability in the TO-1 tokamak

Journal Article · Thu Mar 01 04:00:00 EST 1979 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:5879867

Artemenkov, L I; Gvozdkov, Y V; Ivanov, N V; Kakurin, A M

Experiments on feedback stabilization of the disruptive instability in the TO-1 tokamak are reported. The feedback system consists of an m=2, n=1 helical winding, an amplifier which can produce a current up to 600 A in the winding in a frequency band from 5 to 150 kHz, and magnetic probes, used to detect the variable poloidal magnetic field. Because of the automatic gain control, the action of the feedback is reduced to damping the fluctuations in the kink perturbation amplitude. In the absence of feedback, the disruptive instability is observed in discharges with a second current increase, at the maximum current. This instability does not occur when the feedback is used.

• Research Organization: I. V. Kurchatov Institute of Atomic Energy, Moscow
• OSTI ID: 5879867
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 5:2; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ANNULAR SPACE
CLOSED PLASMA DEVICES
CONFIGURATION
FEEDBACK
INSTABILITY
KINK INSTABILITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
STABILIZATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION