Spatial imaging detector system for pulsed plasma extreme ultraviolet diagnostics

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1136048· OSTI ID:5632463

Richards, R K; Moos, H W; Allen, S L

A spectroscopic instrumentation system is described which forms one-dimensional monochromatic EUV images of pulsed plasma sources. The system uses a small monochromator and a 22 anode microchannel plate detector to simultaneously view 22 chords of the plasma at the wavelength of a given impurity emission with 100 ..mu..s resolution. Brightness profiles are measured and stored in a minicomputer at up to 400 time points during a single discharge. If the discharge is cylindrically symmetric, this data can be Abel inverted directly to produce the volume emission rates and impurity density profiles during the discharge. The design, construction, and testing of the system are described, as well as its performance on the Alcator A tokamak.

• Research Organization: Department of Physics, The Johns Hopkins University, Baltimore Maryland 21218
• OSTI ID: 5632463
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 51:1; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ALCATOR DEVICE
ANODES
CLOSED PLASMA DEVICES
COMPUTERS
CONFIGURATION
CYLINDRICAL CONFIGURATION
DATA
DETECTION
DISTRIBUTION
ELECTRIC DISCHARGES
ELECTRODES
ELECTROMAGNETIC RADIATION
ELECTRON MULTIPLIER DETECTORS
EMISSION
EXTREME ULTRAVIOLET RADIATION
IMAGES
IMPURITIES
INFORMATION
MEASURING INSTRUMENTS
MONOCHROMATORS
PLASMA DIAGNOSTICS
PULSES
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
SPATIAL DISTRIBUTION
SPECTROSCOPY
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
ULTRAVIOLET RADIATION
WAVELENGTHS