Initial operation of the national spherical torus experiment fast tangential soft x-ray camera

Journal Article · Fri Oct 01 00:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1787930· OSTI ID:20641202

Stratton, B C; Feder, R; Goeler, S von; Renda, G F; Mastrocola, V J; Lowrance, J L ^[1]

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1. Princeton Plasma Physics Laboratory, P. O. Box 451, Princeton, New Jersey 80543 (United States)

Fast, two-dimensional, soft x-ray imaging is a powerful technique for the study of magnetohydrodynamic instabilities in tokamak plasmas. We have constructed an ultra-fast frame rate soft x-ray camera for the national spherical torus experiment (NSTX). It is based on a recently developed 64x64 pixel charge-coupled device (CCD) camera capable of capturing 300 frames at up to 500 000 frames per second. A pinhole aperture images the plasma soft x-ray emission (0.2-10 keV) onto a P47 scintillator deposited on a fiber-optic faceplate; the scintillator visible light output is detected and amplified by a demagnifying image intensifier and lens-coupled to the CCD chip. A selection of beryllium foils provides discrimination of low-energy emission. The system is installed on NSTX with a wide-angle tangential view of the plasma. Initial plasma data and an assessment of the system performance are presented.

• OSTI ID: 20641202
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
APERTURES
BERYLLIUM
CHARGE-COUPLED DEVICES
EMISSION
IMAGE INTENSIFIERS
KEV RANGE 01-10
MAGNETOHYDRODYNAMICS
NSTX DEVICE
PERFORMANCE
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
SCINTILLATIONS
SOFT X RADIATION
SPHERICAL CONFIGURATION
X-RAY RADIOGRAPHY