Ponderomotive feedback stabilization of external kinks and disruptions in tokamaks

Journal Article · Fri Sep 01 00:00:00 EDT 1995 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871448· OSTI ID:123611

D`Ippolito, D A; Myra, J R ^[1]; Jardin, S C; Chance, M S; Valeo, E J ^[2]

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1. Lodestar Research Corporation, Boulder, Colorado 80301 (United States)
2. Princeton University, Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

A novel mechanism for feedback stabilization of external kink modes and disruptions is proposed in which modulated radio-frequency (RF) antennas apply a stabilizing ponderomotive force (PF) to the plasma. The RF power required for {ital n}=1 kink stabilization in the Princeton Beta Experiment-Modified (PBX-M) [Phys. Fluids B {bold 2}, 1271 (1990)] is estimated, and it is shown that the idea can be tested with the existing antenna system. A simulation of a preliminary {ital n}=0 modulation experiment on PBX-M also shows that the PF can balance applied vertical field oscillations. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• DOE Contract Number: FG05-93ER81587; FG02-88ER53263; AC02-76CH03073
• OSTI ID: 123611
• Journal Information: Physics of Plasmas, Vol. 2, Issue 9; Other Information: PBD: Sep 1995
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
KINK INSTABILITY
TOKAMAK DEVICES
PONDEROMOTIVE FORCE
FEEDBACK
RADIOWAVE RADIATION
PBX DEVICES
PLASMA SIMULATION
MHD EQUILIBRIUM