Plasma diagnostic x-ray tomography system
- Nuclear Engineering Department, University of Missouri-Rolla, Rolla, Missouri 65401 (US)
- Nuclear Engineering Department, University of Missouri-Columbia, Columbia, Missouri 65211 (USA)
A radiation-hardened 60-channel x-ray tomography system has been developed to determine the two-dimensional distribution of x-ray emissivity from magnetically confined plasmas. In order to maximize their field of view, the diode arrays are mounted in re-entrant tubes inside the plasma chamber diagnostic ports. Metal foil vacuum windows serve as x-ray filters and permit the diodes and cables to be at atmospheric pressure. Preamplifiers are mounted at the outside end of the re-entrant tubes. The diode arrays and preamplifiers are protected from the harsh radiation environment by lead shielding. Image reconstruction is done using the harmonic expansion method or the linear algebraic method. For plasmas with some cylindrical symmetry the harmonic expansion method is superior, but for small discrete objects the Cartesian algebraic method is better. Preliminary data from the Missouri Magnetic Mirror plasma with electron cyclotron resonance heating show evidence of a hot electron ring.
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 5727636
- Journal Information:
- Review of Scientific Instruments; (USA), Vol. 62:3; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PLASMA DIAGNOSTICS
EMISSION COMPUTED TOMOGRAPHY
ELECTRON CYCLOTRON-RESONANCE
MAGNETIC MIRRORS
MULTI-CHANNEL ANALYZERS
PLASMA CONFINEMENT
X RADIATION
COMPUTERIZED TOMOGRAPHY
CONFINEMENT
CYCLOTRON RESONANCE
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
IONIZING RADIATIONS
OPEN PLASMA DEVICES
PULSE ANALYZERS
RADIATIONS
RESONANCE
THERMONUCLEAR DEVICES
TOMOGRAPHY
700102* - Fusion Energy- Plasma Research- Diagnostics