Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor

M. Bitter; K. W. Hill; S. Cohen; S. Von Goeler; H. Hsuan; L. C. Johnson; S. Raftopoulos; M. Reale; N. Schechtman; S. Sesnic; F. Spinos; J. Timberlake; S. Weicher; N. Young; K. M. Young

doi:10.1063/1.1138711

Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor

M. Bitter, K. W. Hill, S. Cohen, S. Von Goeler, H. Hsuan, L. C. Johnson, S. Raftopoulos, M. Reale, N. Schechtman, S. Sesnic, F. Spinos, J. Timberlake, S. Weicher, N. Young, K. M. Young

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Abstract

A Bragg x-ray spectrometer of high spectral resolution (λ/ Δλ=10 000-20 000) which accommodates three crystals and position-sensitive detectors in the Johann configuration has been installed in the diagnostic basement of the tokamak fusion test reactor (TFTR) for the measurement of radial ion temperature profiles. The ion temperature is derived from the Doppler broadening of Kα-resonance lines of metal impurity ions, e.g., Ti, Cr, Fe, and Ni, in the helium-like and hydrogen-like charge states. The x-ray diffraction plane is almost perpendicular to the magnetic axis, but slightly tilted by an angle of 3.8°, which makes it possible to measure poloidal and toroidal plasma rotation velocities of v_Θ > 5×10³ m/s and v_Φ > 1×10⁵ m/s, from the Doppler shift of spectral lines. Results obtained from the observation of TiXXl Kα-line spectra with a 220-silicon crystal of a 2d spacing of 3.8400 Å and a curvature radius of 11.05 m are reported.

Original language	English (US)
Pages (from-to)	2145-2147
Number of pages	3
Journal	Review of Scientific Instruments
Volume	57
Issue number	8
DOIs	https://doi.org/10.1063/1.1138711
State	Published - 1986

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.1138711

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Bitter, M., Hill, K. W., Cohen, S., Von Goeler, S., Hsuan, H., Johnson, L. C., Raftopoulos, S., Reale, M., Schechtman, N., Sesnic, S., Spinos, F., Timberlake, J., Weicher, S., Young, N., & Young, K. M. (1986). Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor. Review of Scientific Instruments, 57(8), 2145-2147. https://doi.org/10.1063/1.1138711

@article{b46198c7a802452b888a1f9d6c76c7cd,

title = "Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor",

abstract = "A Bragg x-ray spectrometer of high spectral resolution (λ/ Δλ=10 000-20 000) which accommodates three crystals and position-sensitive detectors in the Johann configuration has been installed in the diagnostic basement of the tokamak fusion test reactor (TFTR) for the measurement of radial ion temperature profiles. The ion temperature is derived from the Doppler broadening of Kα-resonance lines of metal impurity ions, e.g., Ti, Cr, Fe, and Ni, in the helium-like and hydrogen-like charge states. The x-ray diffraction plane is almost perpendicular to the magnetic axis, but slightly tilted by an angle of 3.8°, which makes it possible to measure poloidal and toroidal plasma rotation velocities of vΘ > 5×103 m/s and vΦ > 1×105 m/s, from the Doppler shift of spectral lines. Results obtained from the observation of TiXXl Kα-line spectra with a 220-silicon crystal of a 2d spacing of 3.8400 {\AA} and a curvature radius of 11.05 m are reported.",

author = "M. Bitter and Hill, {K. W.} and S. Cohen and {Von Goeler}, S. and H. Hsuan and Johnson, {L. C.} and S. Raftopoulos and M. Reale and N. Schechtman and S. Sesnic and F. Spinos and J. Timberlake and S. Weicher and N. Young and Young, {K. M.}",

year = "1986",

doi = "10.1063/1.1138711",

language = "English (US)",

volume = "57",

pages = "2145--2147",

journal = "Review of Scientific Instruments",

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publisher = "American Institute of Physics",

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}

Bitter, M, Hill, KW, Cohen, S, Von Goeler, S, Hsuan, H, Johnson, LC, Raftopoulos, S, Reale, M, Schechtman, N, Sesnic, S, Spinos, F, Timberlake, J, Weicher, S, Young, N & Young, KM 1986, 'Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor', Review of Scientific Instruments, vol. 57, no. 8, pp. 2145-2147. https://doi.org/10.1063/1.1138711

TY - JOUR

T1 - Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor

AU - Bitter, M.

AU - Hill, K. W.

AU - Cohen, S.

AU - Von Goeler, S.

AU - Hsuan, H.

AU - Johnson, L. C.

AU - Raftopoulos, S.

AU - Reale, M.

AU - Schechtman, N.

AU - Sesnic, S.

AU - Spinos, F.

AU - Timberlake, J.

AU - Weicher, S.

AU - Young, N.

AU - Young, K. M.

PY - 1986

Y1 - 1986

N2 - A Bragg x-ray spectrometer of high spectral resolution (λ/ Δλ=10 000-20 000) which accommodates three crystals and position-sensitive detectors in the Johann configuration has been installed in the diagnostic basement of the tokamak fusion test reactor (TFTR) for the measurement of radial ion temperature profiles. The ion temperature is derived from the Doppler broadening of Kα-resonance lines of metal impurity ions, e.g., Ti, Cr, Fe, and Ni, in the helium-like and hydrogen-like charge states. The x-ray diffraction plane is almost perpendicular to the magnetic axis, but slightly tilted by an angle of 3.8°, which makes it possible to measure poloidal and toroidal plasma rotation velocities of vΘ > 5×103 m/s and vΦ > 1×105 m/s, from the Doppler shift of spectral lines. Results obtained from the observation of TiXXl Kα-line spectra with a 220-silicon crystal of a 2d spacing of 3.8400 Å and a curvature radius of 11.05 m are reported.

AB - A Bragg x-ray spectrometer of high spectral resolution (λ/ Δλ=10 000-20 000) which accommodates three crystals and position-sensitive detectors in the Johann configuration has been installed in the diagnostic basement of the tokamak fusion test reactor (TFTR) for the measurement of radial ion temperature profiles. The ion temperature is derived from the Doppler broadening of Kα-resonance lines of metal impurity ions, e.g., Ti, Cr, Fe, and Ni, in the helium-like and hydrogen-like charge states. The x-ray diffraction plane is almost perpendicular to the magnetic axis, but slightly tilted by an angle of 3.8°, which makes it possible to measure poloidal and toroidal plasma rotation velocities of vΘ > 5×103 m/s and vΦ > 1×105 m/s, from the Doppler shift of spectral lines. Results obtained from the observation of TiXXl Kα-line spectra with a 220-silicon crystal of a 2d spacing of 3.8400 Å and a curvature radius of 11.05 m are reported.

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JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 8

ER -

Vertical high-resolution Bragg x-ray spectrometer for the tokamak fusion test reactor

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