Initial operation of the national spherical torus experiment fast tangential soft x-ray camera
- 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, Vol. 75, Issue 10; Conference: 15. topical conference on high temperature plasma diagnostics, San Diego, CA (United States), 19-22 Apr 2004; Other Information: DOI: 10.1063/1.1787930; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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