Doppler coherence imaging and tomography of flows in tokamak plasmas

J. Howard; A. Diallo; M. Creese; B. D. Blackwell; S. L. Allen; R. M. Ellis; G. D. Porter; W. Meyer; M. E. Fenstermacher; N. H. Brooks; M. E. Van Zeeland; R. L. Boivin

doi:10.1063/1.3492422

Doppler coherence imaging and tomography of flows in tokamak plasmas

J. Howard^*, A. Diallo, M. Creese, B. D. Blackwell, S. L. Allen, R. M. Ellis, G. D. Porter, W. Meyer, M. E. Fenstermacher, N. H. Brooks, M. E. Van Zeeland, R. L. Boivin

^*Corresponding author for this work

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

23 Citations (Scopus)

Abstract

This article describes the results of spatial heterodyne Doppler "coherence imaging" of carbon ion flows in the divertor region of the DIII-D tokamak. Spatially encoded interferometric projections of doubly ionized carbon emission at 465 nm have been demodulated and tomographically inverted to obtain the spatial distribution of the carbon ion parallel flow and emissivity. The operating principles of the new instruments are described, and the link between measured properties and line integrals of the flow field are established. An iterative simultaneous arithmetic reconstruction procedure is applied to invert the interferometric phase shift projections, and the reconstructed parallel flow field amplitudes are found to be in reasonable agreement with UEDGE modeling.

Original language	English
Article number	10E528
Journal	Review of Scientific Instruments
Volume	81
Issue number	10
DOIs	https://doi.org/10.1063/1.3492422
Publication status	Published - Oct 2010

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title = "Doppler coherence imaging and tomography of flows in tokamak plasmas",

abstract = "This article describes the results of spatial heterodyne Doppler {"}coherence imaging{"} of carbon ion flows in the divertor region of the DIII-D tokamak. Spatially encoded interferometric projections of doubly ionized carbon emission at 465 nm have been demodulated and tomographically inverted to obtain the spatial distribution of the carbon ion parallel flow and emissivity. The operating principles of the new instruments are described, and the link between measured properties and line integrals of the flow field are established. An iterative simultaneous arithmetic reconstruction procedure is applied to invert the interferometric phase shift projections, and the reconstructed parallel flow field amplitudes are found to be in reasonable agreement with UEDGE modeling.",

author = "J. Howard and A. Diallo and M. Creese and Blackwell, {B. D.} and Allen, {S. L.} and Ellis, {R. M.} and Porter, {G. D.} and W. Meyer and Fenstermacher, {M. E.} and Brooks, {N. H.} and {Van Zeeland}, {M. E.} and Boivin, {R. L.}",

year = "2010",

month = oct,

doi = "10.1063/1.3492422",

language = "English",

volume = "81",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Doppler coherence imaging and tomography of flows in tokamak plasmas

AU - Howard, J.

AU - Diallo, A.

AU - Creese, M.

AU - Blackwell, B. D.

AU - Allen, S. L.

AU - Ellis, R. M.

AU - Porter, G. D.

AU - Meyer, W.

AU - Fenstermacher, M. E.

AU - Brooks, N. H.

AU - Van Zeeland, M. E.

AU - Boivin, R. L.

PY - 2010/10

Y1 - 2010/10

N2 - This article describes the results of spatial heterodyne Doppler "coherence imaging" of carbon ion flows in the divertor region of the DIII-D tokamak. Spatially encoded interferometric projections of doubly ionized carbon emission at 465 nm have been demodulated and tomographically inverted to obtain the spatial distribution of the carbon ion parallel flow and emissivity. The operating principles of the new instruments are described, and the link between measured properties and line integrals of the flow field are established. An iterative simultaneous arithmetic reconstruction procedure is applied to invert the interferometric phase shift projections, and the reconstructed parallel flow field amplitudes are found to be in reasonable agreement with UEDGE modeling.

AB - This article describes the results of spatial heterodyne Doppler "coherence imaging" of carbon ion flows in the divertor region of the DIII-D tokamak. Spatially encoded interferometric projections of doubly ionized carbon emission at 465 nm have been demodulated and tomographically inverted to obtain the spatial distribution of the carbon ion parallel flow and emissivity. The operating principles of the new instruments are described, and the link between measured properties and line integrals of the flow field are established. An iterative simultaneous arithmetic reconstruction procedure is applied to invert the interferometric phase shift projections, and the reconstructed parallel flow field amplitudes are found to be in reasonable agreement with UEDGE modeling.

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U2 - 10.1063/1.3492422

DO - 10.1063/1.3492422

M3 - Article

SN - 0034-6748

VL - 81

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10

M1 - 10E528

ER -

Doppler coherence imaging and tomography of flows in tokamak plasmas

Abstract

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