Experimental modeling of eddy currents and defections for tokamak limiters

Conference · Wed Jan 01 04:00:00 EST 1986 · Transactions of the American Nuclear Society; (USA)

OSTI ID:6764763

Hua, T Q; Knott, M J; Turner, L R; Wehrle, R B

In a tokamak fusion reactor or other magnetically confined fusion device, a rapid decay of the magnetic field due to a disrupting plasma current induces eddy currents in the surrounding structures. These include the limiters, blanket, first wall, and vacuum vessel. The eddy currents, through interaction with the applied toroidal and poloidal magnetic fields, produce large mechanical torques and forces that deflect the structural components. An important coupling effect exists between the dynamic behavior of the structure and the transient eddy current. This coupling occurs when, as it deflects, the component intercepts additional magnetic flux. The coupling between deflection and eddy current could reduce the peak current, deflection, and other electromagnetic effects to a level far less severe than would be predicted if coupling is disregarded. In this study, experiments were performed to investigate deflection, current, and material stress in cantilever beams with the Fusion ELectromagnetic Induction eXperiment (FELIX) at the Argonne National Laboratory. Since structures near the plasma are typically cantilevered, the beams provide a good model for the limiter blades of a tokamak fusion reactor. 2 figs.

• OSTI ID: 6764763
• Report Number(s): CONF-860610--Summs.
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (USA) Journal Volume: 52
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
ALUMINIUM
BRASS
BRONZE
COPPER
COPPER ALLOYS
COPPER BASE ALLOYS
CURRENTS
DATA
EDDY CURRENTS
ELECTRIC CURRENTS
ELEMENTS
EXPERIMENTAL DATA
FELIX FACILITY
INFORMATION
LIMITERS
MAGNETIC FIELDS
MECHANICAL PROPERTIES
METALS
NUMERICAL DATA
PERFORMANCE TESTING
PHYSICAL PROPERTIES
SIZE
STRESSES
STRUCTURAL BEAMS
TEST FACILITIES
TESTING
THERMONUCLEAR REACTORS
TIN ALLOYS
TOKAMAK TYPE REACTORS
TRANSITION ELEMENTS
ZINC ALLOYS