Experimental studies of the rotational stability of a tandem mirror with quadrupole end cells

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859948· OSTI ID:6037654

Severn, G D; Hershkowitz, N; Breun, R A; Ferron, J R ^[1]

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1. Department of Nuclear Engineering and Engineering Physics, University of Wisconsin, Madison, Wisconsin 53706 (US)

It is demonstrated that the radial electric field in the Phaedrus Tandem Mirror ({ital Plasma} {ital Physics} {ital and} {ital Controlled} {ital Nuclear} {ital Fusion} {ital Research} 1984 (IAEA, Vienna, 1985), Vol. 2, p. 265) can be altered using plasma potential control rings (PPC rings) situated at each end of the device, and the azimuthal plasma rotational velocity may thus be varied. Low-frequency ({omega}{much lt}{omega}{sub {ital ci}}), low azimuthal mode number ({ital m}={minus}1 and {ital m}={minus}2) instabilities driven by {bold E}{times}{bold B} rotation are observed and shown to be in qualitative agreement with the theory of Freidberg and D'Ippolito (Phys. Fluids {bold 26}, 2657 (1983)), and Phillips (Phys. Fluids {bold 27}, 1783 (1984)) for the case when Phaedrus is operated as a conventional tandem mirror with minimum-{vert bar}{ital B}{vert bar} end cells.

• DOE Contract Number: AC02-78ET51015
• OSTI ID: 6037654
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 3:1; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
AZIMUTH
CONTROL
CORRELATIONS
ELECTRIC FIELDS
END EFFECTS
INSTABILITY
MAGNETIC MIRRORS
MULTIPOLES
OPEN PLASMA DEVICES
OSCILLATION MODES
PHAEDRUS MIRROR DEVICES
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA RINGS
POTENTIALS
QUADRUPOLES
ROTATING PLASMA
TANDEM MIRRORS
THERMONUCLEAR DEVICES
VELOCITY