Use of graphite in Langmuir-calorimeter probe heads

Journal Article · Fri Aug 01 04:00:00 EDT 1986 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138743· OSTI ID:5405917

Kilpatrick, S; Manos, D; Stangeby, P; Ritter, R

Graphite has become an important material in magnetically confined fusion devices, being used for components such as limiter blades, divertor plates, and Faraday shields. Langmuir-calorimeter probes on the tokamak fusion test reactor (TFTR) and the Princeton large torus (PLT) have utilized graphite in probe heads, active elements, protective shields, and in an epoxy compound for various applications. Most recently, all-graphite edge probes have been used successfully on these machines. The advantages and disadvantages of using this material as a collecting element and a heat resistant support are discussed, with reference to its survivability and usefulness in the TFTR environment. A three-dimensional finite difference thermal analysis of a TFTR graphite calorimeter is presented which calculates its temperature response to selected power inputs. This was used to estimate power densities at the edge of TFTR plasmas.

• Research Organization: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08544
• OSTI ID: 5405917
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 57:8; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CARBON
CONFIGURATION
DENSITY
DESIGN
ELECTRIC PROBES
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELEMENTAL MINERALS
ELEMENTS
EMISSIVITY
EVAPORATION
GRAPHITE
LANGMUIR PROBE
MACHINING
MATERIALS
MINERALS
NONMETALS
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLASMA DIAGNOSTICS
PLT DEVICES
PROBES
SPECIFIC HEAT
SUBLIMATION
SURFACE PROPERTIES
TFTR TOKAMAK
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS