Drift surface axis position and transform measurements in the Compact Auburn Torsatron

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.871338· OSTI ID:6543197

Gandy, R F; Lin, H; Hartwell, G J; Knowlton, S F; Morimoto, S; Pritchard, D ^[1]

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1. Department of Physics, Auburn University, Alabama 36849 (United States)

In toroidal plasma confinement devices, the highly energetic fusion products will have trajectories defining drift surfaces that deviate considerably from the magnetic surfaces. An understanding of these drift surfaces is important for efficient operation of a fusion reactor. By appropriate choice of electron energy on the Compact Auburn Torsatron [Fusion Technol. [bold 18], 281 (1990)], normalized drift surface shifts similar to those for fusion products in a reactor can be studied. As a benchmark, a set of experiments have been conducted to study the axis position and central rotational transform associated with varying vertical fields. Corresponding experiments have been conducted which measure the axis position and central transform associated with the drift surfaces of highly energetic electrons. These experiments were compared and a theoretical model incorporating the spatial nonuniformity of the applied vertical magnetic field was developed. The experimental results agreed well with this theory.

• DOE Contract Number: FG05-85ER53192
• OSTI ID: 6543197
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 2:4; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700380* -- Elementary & Classical Processes in Plasmas-- (1992-)
700412 -- Magnetic Confinement Devices-- (1992-)
CLOSED PLASMA DEVICES
CONFINEMENT
ENERGY DEPENDENCE
FUSION YIELD
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC SURFACES
NUCLEAR REACTION YIELD
PLASMA CONFINEMENT
PLASMA DRIFT
STELLARATORS
THERMONUCLEAR DEVICES
TORSATRON STELLARATORS
YIELDS