Infrared camera and data-acquisition system in Doublet III

Conference · Wed May 01 04:00:00 EDT 1985 · Rev. Sci. Instrum.; (United States)

OSTI ID:5197114

Petrie, T W; Scoville, J T

Thermal imaging cameras sensitive to 3-5 ..mu.. radiation are routinely used to measure heat flow to the main limiter, to the vacuum vessel wall behind the main limiter, and to the divertor plate limiters. The cameras are equipped to provide either a standard television image with a time resolution of approx. 16.7 ms or a surface temperature profile on one line of the image with a time resolution of approx. 125 ..mu..s. In the former mode, they can determine both the location and the intensity of the heating on the main limiter during multi-megawatt neutral-beam injection into plasma; in the latter mode, they can measure heat pulses striking the limiter from plasma processes occurring on fast time scales (e.g., H/sub ..cap alpha../ spikes of approx. 500-..mu..s duration). Data is stored in both video image and digitized forms. In the latter, a peak-sample-hold circuit electronically records the maximum signal of each line sweep and stores this data in digitized form on magnetic tape. This facilitates later comparisons of infrared camera data with other diagnostic signals using plotting packages on the DEC-10.

• Research Organization: GA Technologies Inc., San Diego, CA
• DOE Contract Number: AC03-84ER51044
• OSTI ID: 5197114
• Report Number(s): CONF-840922-
• Conference Information: Journal Name: Rev. Sci. Instrum.; (United States) Journal Volume: 56:5
• Country of Publication: United States
• Language: English

Related Subjects

440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CAMERAS
DATA ACQUISITION
DOUBLET REACTORS
ELECTROMAGNETIC RADIATION
INFRARED RADIATION
LIMITERS
PLASMA DIAGNOSTICS
RADIATIONS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS