Infrared thermography system on DIII-D

Conference · Mon Oct 01 04:00:00 EDT 1990

OSTI ID:6581299

Petrie, T W ^[1]; Hill, D N; Baptista, J; Brown, M ^[2]

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1. General Atomics, San Diego, CA (USA)
2. Lawrence Livermore National Lab., CA (USA)

Six infrared cameras measure temperature changes on the protective graphite armor inside the DIII-D vacuum vessel. Simultaneous time dependent temperature measurements are made on armor tiles located on the centerpost and divertor regions, and on both outboard limiters. The nearly-complete poloidal coverage is useful in measuring both the plasma heat flux distributions inside the vessel and the plasma power balance. Spatial resolution of each camera system is {approx lt}1 cm, while the minimum resolvable time is 125 {mu}sec. Data from the IR TV systems is recorded on video tape, and is post-processed serially, using an image processor with an AT-compatible microcomputer. The processing system controls all VCRs, interprets DIII-D timing pulses, digitizes video data in the pre-determined regions of interest, averages digitized signals to reduce noise, and constructs data files which are then stored as part of the permanent shot record.

• Research Organization: General Atomics, San Diego, CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-89ER51114; W-7405-ENG-48
• OSTI ID: 6581299
• Report Number(s): GA-A-20112; CONF-900557--20; ON: DE91001294
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
CAMERAS
CARBON
CONTAINERS
DATA PROCESSING
DIVERTORS
DOUBLET REACTORS
ELEMENTAL MINERALS
ELEMENTS
ENERGY BALANCE
GRAPHITE
INFRARED THERMOGRAPHY
LIMITERS
MEASURING METHODS
MINERALS
NONMETALS
OPTICAL SYSTEMS
PRESSURE VESSELS
PROCESSING
TELEVISION CAMERAS
TEMPERATURE GRADIENTS
TEMPERATURE MEASUREMENT
THERMOGRAPHY
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS