Infrared thermography system on DIII-D (abstract)

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141755· OSTI ID:6134150

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

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1. General Atomics, San Diego, 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}s. Data from the IR TV systems are recorded on video tape, and are 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 predetermined regions of interest, averages digitized signals to reduce noise, and constructs data files which are then stored as part of the permanent shot record.

• DOE Contract Number: AC03-89ER51114; W-7405-ENG-48
• OSTI ID: 6134150
• Journal Information: Review of Scientific Instruments; (USA), Journal Name: Review of Scientific Instruments; (USA) Vol. 61:10; ISSN RSINA; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201* -- Fusion Power Plant Technology-- Blanket Engineering
CARBON
CLOSED PLASMA DEVICES
CONTAINMENT
CONTAINMENT SHELLS
DATA PROCESSING
DOUBLET-3 DEVICE
ELECTROMAGNETIC RADIATION
ELEMENTAL MINERALS
ELEMENTS
GRAPHITE
INFRARED RADIATION
MEASURING METHODS
MINERALS
NONMETALS
PROCESSING
RADIATIONS
TEMPERATURE MEASUREMENT
THERMOGRAPHY
THERMONUCLEAR DEVICES
TIME DEPENDENCE
TOKAMAK DEVICES