Radial control of the electrostatic potential in a tandem mirror with quadrupole end cells

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860427· OSTI ID:7154093

Severn, G D; Hershkowitz, N ^[1]

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

It is demonstrated that the radial electrostatic potential in the Phaedrus tandem mirror ({ital Plasma} {ital Physics} {ital and} {ital Controlled} {ital Fusion} {ital Research}, 1984 (International Atomic Energy Agency, Vienna, 1985), Vol. 2, p. 265) can be altered using plasma potential control rings (PPC rings) situated at each end of the device. With the PPC rings grounded, the radial electric field in the central cell was directed outward and peaked near the plasma edge. By externally controlling the potentials of the PPC rings, the peak value of the radial electric field was varied by over a factor of 2, obtaining plasmas with a maximum value of the radial electric field {bold E}({ital r}){le}15 V/cm. A simple calculation to model the change in the central cell potential due to a bias voltage applied to the PPC rings is presented.

• DOE Contract Number: AC02-78ET51015
• OSTI ID: 7154093
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:10; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310* -- Plasma Confinement-- (1992-)
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
CONFINEMENT
DIFFUSION
ELECTRIC FIELDS
ELECTRIC POTENTIAL
HEATING
MAGNETIC MIRRORS
MULTIPOLES
OPEN PLASMA DEVICES
PLASMA CONFINEMENT
PLASMA HEATING
PLASMA SHEATH
QUADRUPOLES
THERMONUCLEAR DEVICES