Graphite limiter and armor damage in Doublet III

Conference · Wed Sep 01 00:00:00 EDT 1982

OSTI ID:6553378

McKelvey, T; Taylor, T; Trester, P

Graphite coated with TiC has been used extensively in Doublet III for limiters and neutral beam armor. Performance of these components has been superior to that of the metal components previously used. Damage to the coated graphite has occurred and can be classified into three categories: (1) gross failure of the graphite due to thermal stresses induced by the combination of high applied energy fluxes and mechanical restraint, (2) surface failure of the graphite due to runaway electron impingement, and (3) loss of TiC coating due to arcing, sputtering, vaporization and spalling, primarily during plasma disruptions and other abnormal plasma conditions. Design improvements are being continually implemented to minimize this damage and its consequences.

• Research Organization: General Atomic Co., San Diego, CA (USA); Japan Atomic Energy Research Inst., Tokyo
• DOE Contract Number: AT03-76ET51011; AT03-80SF11512
• OSTI ID: 6553378
• Report Number(s): GA-A-16748; CONF-820948-6; ON: DE83003218
• Resource Relation: Conference: 12. symposium on fusion technology, Juelich, F.R. Germany, 13 Sep 1982
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DOUBLET REACTORS
LIMITERS
SHIELDING
EROSION
SPUTTERING
GRAPHITE
RUNAWAY ELECTRONS
SPALLATION
THERMAL STRESSES
TITANIUM CARBIDES
CARBIDES
CARBON
CARBON COMPOUNDS
ELECTRONS
ELEMENTAL MINERALS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
LEPTONS
MINERALS
NONMETALS
NUCLEAR REACTIONS
STRESSES
THERMONUCLEAR REACTORS
TITANIUM COMPOUNDS
TOKAMAK TYPE REACTORS
TRANSITION ELEMENT COMPOUNDS
700209* - Fusion Power Plant Technology- Component Development & Materials Testing