Divertor electron temperature and impurity diffusion measurements with a spectrally resolved imaging radiometer

D. J. Clayton; M. A. Jaworski; D. Kumar; D. Stutman; M. Finkenthal; K. Tritz

doi:10.1063/1.4732066

Divertor electron temperature and impurity diffusion measurements with a spectrally resolved imaging radiometer

D. J. Clayton^*, M. A. Jaworski, D. Kumar, D. Stutman, M. Finkenthal, K. Tritz

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A divertor imaging radiometer (DIR) diagnostic is being studied to measure spatially and spectrally resolved radiated power P _rad(λ) in the tokamak divertor. A dual transmission grating design, with extreme ultraviolet (∼20-200 Å) and vacuum ultraviolet (∼200-2000 Å) gratings placed side-by-side, can produce coarse spectral resolution over a broad wavelength range covering emission from impurities over a wide temperature range. The DIR can thus be used to evaluate the separate P _rad contributions from different ion species and charge states. Additionally, synthetic spectra from divertor simulations can be fit to P _rad(λ) measurements, providing a powerful code validation tool that can also be used to estimate electron divertor temperature and impurity transport.

Original language	English
Article number	10D521
Journal	Review of Scientific Instruments
Volume	83
Issue number	10
DOIs	https://doi.org/10.1063/1.4732066
State	Published - Oct 2012
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1063/1.4732066

Cite this

@article{a41c7abe59674c26b1ef58316229b43a,

title = "Divertor electron temperature and impurity diffusion measurements with a spectrally resolved imaging radiometer",

abstract = "A divertor imaging radiometer (DIR) diagnostic is being studied to measure spatially and spectrally resolved radiated power P rad(λ) in the tokamak divertor. A dual transmission grating design, with extreme ultraviolet (∼20-200 {\AA}) and vacuum ultraviolet (∼200-2000 {\AA}) gratings placed side-by-side, can produce coarse spectral resolution over a broad wavelength range covering emission from impurities over a wide temperature range. The DIR can thus be used to evaluate the separate P rad contributions from different ion species and charge states. Additionally, synthetic spectra from divertor simulations can be fit to P rad(λ) measurements, providing a powerful code validation tool that can also be used to estimate electron divertor temperature and impurity transport.",

author = "Clayton, {D. J.} and Jaworski, {M. A.} and D. Kumar and D. Stutman and M. Finkenthal and K. Tritz",

year = "2012",

month = oct,

doi = "10.1063/1.4732066",

language = "אנגלית",

volume = "83",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "10",

}

TY - JOUR

T1 - Divertor electron temperature and impurity diffusion measurements with a spectrally resolved imaging radiometer

AU - Clayton, D. J.

AU - Jaworski, M. A.

AU - Kumar, D.

AU - Stutman, D.

AU - Finkenthal, M.

AU - Tritz, K.

PY - 2012/10

Y1 - 2012/10

N2 - A divertor imaging radiometer (DIR) diagnostic is being studied to measure spatially and spectrally resolved radiated power P rad(λ) in the tokamak divertor. A dual transmission grating design, with extreme ultraviolet (∼20-200 Å) and vacuum ultraviolet (∼200-2000 Å) gratings placed side-by-side, can produce coarse spectral resolution over a broad wavelength range covering emission from impurities over a wide temperature range. The DIR can thus be used to evaluate the separate P rad contributions from different ion species and charge states. Additionally, synthetic spectra from divertor simulations can be fit to P rad(λ) measurements, providing a powerful code validation tool that can also be used to estimate electron divertor temperature and impurity transport.

AB - A divertor imaging radiometer (DIR) diagnostic is being studied to measure spatially and spectrally resolved radiated power P rad(λ) in the tokamak divertor. A dual transmission grating design, with extreme ultraviolet (∼20-200 Å) and vacuum ultraviolet (∼200-2000 Å) gratings placed side-by-side, can produce coarse spectral resolution over a broad wavelength range covering emission from impurities over a wide temperature range. The DIR can thus be used to evaluate the separate P rad contributions from different ion species and charge states. Additionally, synthetic spectra from divertor simulations can be fit to P rad(λ) measurements, providing a powerful code validation tool that can also be used to estimate electron divertor temperature and impurity transport.

UR - http://www.scopus.com/inward/record.url?scp=84868362641&partnerID=8YFLogxK

U2 - 10.1063/1.4732066

DO - 10.1063/1.4732066

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84868362641

SN - 0034-6748

VL - 83

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10

M1 - 10D521

ER -

Divertor electron temperature and impurity diffusion measurements with a spectrally resolved imaging radiometer

Abstract

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this