Neoclassical transport in a multiple-helicity torsatron in the low-collisionality (1/. nu. ) regime

Technical Report · Tue Feb 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/6789053· OSTI ID:6789053

Shaing, K. C.; Hokin, S. A.

For a sufficiently high number of field periods (m/iota > l), the magnetic field of a multiple helicity torsatron can be reduced to a simple form such that the second adiabatic invariant J can be calculated. It is found that the particle and the heat fluxes for a multiple helicity torsatron in the low collisionality (1/..nu..) regime have the same geometric dependences. An optimization of both quantities is carried out for a given equilibrium constraint. It is shown that the transport fluxes can be smaller than those of the conventional stellarator by an order of magnitude. The effect of finite plasma beta on the neoclassical fluxes is also studied.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6789053
• Report Number(s): ORNL/TM-8556; ON: DE83005974
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
ADIABATIC INVARIANCE
BETA RATIO
CLOSED PLASMA DEVICES
MAGNETIC FIELD CONFIGURATIONS
NEOCLASSICAL TRANSPORT THEORY
PLASMA
STELLARATORS
THERMONUCLEAR DEVICES
TORSATRON STELLARATOR
TRANSPORT THEORY