Infrared thermography system on DIII-D

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141570· OSTI ID:6055912

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

---

1. General Atomics, San Diego, California 92186-9084 (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: 6055912
• Journal Information: Review of Scientific Instruments; (USA), Journal Name: Review of Scientific Instruments; (USA) Vol. 61:11; ISSN RSINA; ISSN 0034-6748
• 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
ARMOR
CARBON
CLOSED PLASMA DEVICES
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DATA PROCESSING
DISTRIBUTION FUNCTIONS
DIVERTORS
ELEMENTAL MINERALS
ELEMENTS
FUNCTIONS
GRAPHITE
HEAT FLUX
INFRARED THERMOGRAPHY
MEASURING METHODS
MINERALS
NONMETALS
PLASMA DIAGNOSTICS
PROCESSING
THERMOGRAPHY
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
VACUUM SYSTEMS