Tokamak Fusion Test Reactor horizontal high-resolution Bragg x-ray spectrometer (abstract)

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138023· OSTI ID:5761449

Hill, K W; Bitter, M; Tavernier, M; Diesso, M; von Goeler, S; Johnson, G; Johnson, L C; Sauthoff, N R; Schechtman, N; Sesnic, S; Tenney, F; Young, K M

A bent quartz-crystal spectrometer of the Johann type with a spectral resolution of lambda/..delta..lambda = 10000--25000 is used on the Tokamak Fusion Test Reactor (TFTR) to determine central plasma parameters from the spectra of helium-like and lithium-like metal impurity ions (Ti, Cr, Fe, and Ni). The spectra are observed along a central radial chord and are recorded by a position-sensitive multiwire proportional counter with a spatial resolution of 250 ..mu... Standard delay-line time-difference readout is employed. The data are histogrammed and stored in 64 K of memory providing 128 time groups of 512-channel spectra. The central ion temperature and the toroidal plasma rotation are inferred from the Doppler broadening and Doppler shift of the K..cap alpha.. lines. The central electron temperature, the distribution of ionization states, and dielectronic recombination rates are obtained from satellite-to-resonance line ratios. The performance of the spectrometer is demonstrated by measurements of the Ti XXI K..cap alpha.. radiation.

• Research Organization: Princeton University, Plasma Physics Laboratory, Princeton, New Jersey 08544
• OSTI ID: 5761449
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 56:6; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CHARGED PARTICLES
CHROMIUM IONS
DATA
DOPPLER BROADENING
ELECTRON TEMPERATURE
EXPERIMENTAL DATA
FABRICATION
INFORMATION
ION TEMPERATURE
IONIZATION
IONS
IRON IONS
LINE BROADENING
MEASURING INSTRUMENTS
MOTION
NICKEL IONS
NUMERICAL DATA
PERFORMANCE
PLASMA
PLASMA DIAGNOSTICS
RECOMBINATION
ROTATION
SPECTRA
SPECTROMETERS
TFTR REACTORS
TITANIUM IONS
X-RAY SPECTRA
X-RAY SPECTROMETERS