Feedback-modulated ion beam stabilization of a plasma instability

Journal Article · Mon Jul 08 04:00:00 EDT 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.67.204· OSTI ID:5651688

Tham, P; Sen, A K; Sekiguchi, A; Greaves, R G; Navratil, G A ^[1]

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1. Plasma Physics Laboratory, Columbia University, New York, New York 10027 (US)

A novel remote suppressor consisting of an injected ion beam has been used for the stabilization of a plasma instability. Plasma instabilities can, for the first time, be remotely suppressed by modulating the ion beam with an appropriately phased and amplified feedback signal derived from a sensor probe. A collisionless curvature-driven trapped-particle instability has been successfully suppressed down to noise levels using this scheme. The ion beam causes only a small perturbation to the plasma, on the order of 1%, so that the plasma equilibrium parameters are not significantly affected.

• OSTI ID: 5651688
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 67:2; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BEAM INJECTION
FEEDBACK
INSTABILITY
ION BEAM INJECTION
MODULATION
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
STABILIZATION
TRAPPED-PARTICLE INSTABILITY