Implementation of vertically asymmetric toroidal-field ripple for beam heating of tokamak reactor plasmas

Conference · Fri Oct 01 04:00:00 EDT 1976

OSTI ID:7346491

Jassby, D. L.; Sheffield, G. V.; Towner, H. H.; Weissenburger, D. W.

The neutral-beam energy required for adequate penetration of tokamak plasmas of high opacity can be reduced by a large factor if the beam is injected vertically into a region of large TF (toroidal-field) ripple. Energetic ions are trapped in local magnetic wells and drift vertically toward the midplane (z = 0). If the ripple is made very small on the opposite side of the midplane, drifting ions are detrapped and thermalized in the central plasma region. This paper discusses design considerations for establishing the required vertically asymmetric ripple. Examples are given of special TF-coil configurations, and of the use of auxiliary coil windings to create the prescribed ripple profiles.

• Research Organization: Princeton Univ., N.J. (USA). Plasma Physics Lab.
• OSTI ID: 7346491
• Report Number(s): PPPL-1292; CONF-760935-8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700202* -- Fusion Power Plant Technology-- Magnet Coils & Fields
BEAM INJECTION
BEAM INJECTION HEATING
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
HEATING
MAGNET COILS
MAGNETIC FIELD CONFIGURATIONS
NEUTRAL ATOM BEAM INJECTION
PLASMA HEATING
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS