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

Journal Article · Mon Aug 01 04:00:00 EDT 1983 · Phys. Fluids; (United States)

OSTI ID:5829753

Shaing, K C; Hokin, S A

For a sufficiently high number of toroidal 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: Nuclear Engineering Department, University of Wisconsin, Madison, Wisconsin 53706
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5829753
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 26:8; ISSN PFLDA
• 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
ANNULAR SPACE
BETA RATIO
CHARGED PARTICLES
CLOSED PLASMA DEVICES
COLLISIONAL PLASMA
CONFIGURATION
ENERGY
FLUX DENSITY
HEAT
HELICITY
MAGNETIC FIELDS
NEOCLASSICAL TRANSPORT THEORY
OPTIMIZATION
PARTICLE PROPERTIES
PLASMA
SPACE
STELLARATORS
THERMONUCLEAR DEVICES
TOROIDAL CONFIGURATION
TORSATRON STELLARATOR
TRANSPORT THEORY