Fast synthetic X-mode Doppler reflectometry diagnostics for the full-f global gyrokinetic modeling of the FT-2 tokamak

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Fast synthetic X-mode Doppler reflectometry diagnostics for the full-f global gyrokinetic modeling of the FT-2 tokamak. / Altukhov, A. B.; Gurchenko, A. D.; Gusakov, E. Z.; Irzak, M. A.; Niskala, P.; Esipov, L. A.; Kiviniemi, T. P.; Leerink, S.

In: Physics of Plasmas, Vol. 25, No. 8, 082305, 01.08.2018, p. 1-9.

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Altukhov, A. B. ; Gurchenko, A. D. ; Gusakov, E. Z. ; Irzak, M. A. ; Niskala, P. ; Esipov, L. A. ; Kiviniemi, T. P. ; Leerink, S. / Fast synthetic X-mode Doppler reflectometry diagnostics for the full-f global gyrokinetic modeling of the FT-2 tokamak. In: Physics of Plasmas. 2018 ; Vol. 25, No. 8. pp. 1-9.

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@article{05a5fcfd175243b78e548d681f0f80ec,
title = "Fast synthetic X-mode Doppler reflectometry diagnostics for the full-f global gyrokinetic modeling of the FT-2 tokamak",
abstract = "The fast linear (Born approximation) version of the X-mode Doppler reflectometry (DR) synthetic diagnostics is developed in the framework of the ELMFIRE global gyrokinetic modeling of the FT-2 tokamak ohmic discharge. The DR signal frequency spectra and the dependence of their frequency shift and shape on the probing antenna position are computed and shown to be similar to those measured in the high magnetic field side probing DR experiment at the FT-2 tokamak. The fluctuation poloidal velocities are determined using the DR experiment and synthetic diagnostics and shown to be within 15{\%}. However, the computed and measured dependences of the DR signal power on the antenna position appear to be different presumably due to underestimation of the small-scale trapped electron mode turbulence component in the measurement region by the code.",
author = "Altukhov, {A. B.} and Gurchenko, {A. D.} and Gusakov, {E. Z.} and Irzak, {M. A.} and P. Niskala and Esipov, {L. A.} and Kiviniemi, {T. P.} and S. Leerink",
year = "2018",
month = "8",
day = "1",
doi = "10.1063/1.5034781",
language = "English",
volume = "25",
pages = "1--9",
journal = "Physics of Plasmas",
issn = "1070-664X",
number = "8",

}

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TY - JOUR

T1 - Fast synthetic X-mode Doppler reflectometry diagnostics for the full-f global gyrokinetic modeling of the FT-2 tokamak

AU - Altukhov, A. B.

AU - Gurchenko, A. D.

AU - Gusakov, E. Z.

AU - Irzak, M. A.

AU - Niskala, P.

AU - Esipov, L. A.

AU - Kiviniemi, T. P.

AU - Leerink, S.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - The fast linear (Born approximation) version of the X-mode Doppler reflectometry (DR) synthetic diagnostics is developed in the framework of the ELMFIRE global gyrokinetic modeling of the FT-2 tokamak ohmic discharge. The DR signal frequency spectra and the dependence of their frequency shift and shape on the probing antenna position are computed and shown to be similar to those measured in the high magnetic field side probing DR experiment at the FT-2 tokamak. The fluctuation poloidal velocities are determined using the DR experiment and synthetic diagnostics and shown to be within 15%. However, the computed and measured dependences of the DR signal power on the antenna position appear to be different presumably due to underestimation of the small-scale trapped electron mode turbulence component in the measurement region by the code.

AB - The fast linear (Born approximation) version of the X-mode Doppler reflectometry (DR) synthetic diagnostics is developed in the framework of the ELMFIRE global gyrokinetic modeling of the FT-2 tokamak ohmic discharge. The DR signal frequency spectra and the dependence of their frequency shift and shape on the probing antenna position are computed and shown to be similar to those measured in the high magnetic field side probing DR experiment at the FT-2 tokamak. The fluctuation poloidal velocities are determined using the DR experiment and synthetic diagnostics and shown to be within 15%. However, the computed and measured dependences of the DR signal power on the antenna position appear to be different presumably due to underestimation of the small-scale trapped electron mode turbulence component in the measurement region by the code.

UR - http://www.scopus.com/inward/record.url?scp=85051179912&partnerID=8YFLogxK

U2 - 10.1063/1.5034781

DO - 10.1063/1.5034781

M3 - Article

VL - 25

SP - 1

EP - 9

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 8

M1 - 082305

ER -

ID: 31531160