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Confinement improvement of low-aspect-ratio torsatrons

Technical Report ·
DOI:https://doi.org/10.2172/6356506· OSTI ID:6356506
; ; ; ;
Stellarators with plasma aspect ratios in the range from 3.5 to 5 can be created using the Compact Torsatron configurations. Stable operation at high beta should be possible in these devices if a vertical field coil system is designed to prevent breaking of the magnetic surfaces at finite beta. Direct losses of energetic particles can be high, but the addition of an external quadrupole field can reduce these losses. Optimization criteria and the low-aspect-ratio torsatron configurations obtained are discussed. 22 refs., 12 figs., 1 tab.
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6356506
Report Number(s):
ORNL/TM-11101; ON: DE89010192
Country of Publication:
United States
Language:
English

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ASPECT RATIO
CLOSED PLASMA DEVICES
CONFINEMENT
CONFINEMENT TIME
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC SURFACES
OPTIMIZATION
PLASMA CONFINEMENT
STELLARATORS
THERMONUCLEAR DEVICES
TORSATRON STELLARATOR