A Stellarator with the symmetry of a tokamak

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:489410

Garabedian, P R ^[1]

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1. New York Univ., NY (United States)

To meet the requirements of the U.S. Stellarator Power Plant Study, a Modular Helias-like Heliac (MHH) configuration was developed that has features in common with the quasihelically symmetric HSX experiment being constructed at the University of Wisconsin. Improvements have been made in the design of the MHH that raise the {beta} limit, increase the confinement time, and simplify the geometry of the coils. In particular, specifications have been found for a stellarator with just two field periods that has a magnetic field spectrum B{sub mn} close to axial symmetry. The aspect ratio of the plasma is only 4.5, the magnetic axis is nearly planar, and there is little twist in the coils. The toroidal coefficients B{sub m0} are smaller than those of a comparable tokamak, and the fully three-dimensional terms B{sub mn} With n {ne} 0 remain below a few percent of the toroidal field strength. This configuration has physical properties that make it an interesting candidate for a follow-on experiment to assess the equilibrium, stability and transport of advanced stellarators.

• OSTI ID: 489410
• Report Number(s): CONF-960354--
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
FLOW MODELS
MINIMUM-B CONFIGURATIONS
PLASMA FLUID EQUATIONS
PLASMA SIMULATION
TOKAMAK DEVICES