Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas: Electrostatic approximation

W7-X Team

doi:10.1063/1.5048361

Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas: Electrostatic approximation

W7-X Team

Eindhoven University of Technology
Max Planck Institute for Plasma Physics
Technical University of Denmark
University of Stuttgart
CIEMAT
Wigner Research Centre for Physics
FORSCHUNGSZENTRUM JULICH GMBH
University of Maryland, College Park
Princeton Plasma Physics Laboratory
Los Alamos National Laboratory
Lithuanian Energy Institute
Massachusetts Institute of Technology
University of WisconsinMadison
Narodowe Centrum Badań Jadrowych
Karlsruher Institut für Technologie
The Australian National University
University of Cagliari
Consorzio Rfx
Instituto de Plasmas e Fusao Nuclear
Ioffe Physical-Technical Institute of the Russian Academy of Sciences
Oak Ridge National Laboratory
University of Salerno
Warsaw University of Technology
ENEA Centro Ricerche Frascati
Institute of Plasma Physics and Laser Microfusion
Institute of Nuclear Physics PAN
University of Szczecin
University of Milano-Bicocca
University of California, San Diego
Auburn University
Brandenburg University of Technology Cottbus-Senftenberg
National Institute for Fusion Science
Universidad Carlos III de Madrid
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Culham Centre for Fusion Energy
Budker Institute of Nuclear Physics (BINP)
Fraunhofer-Institut für Schicht- und Oberflächentechnik IST
Austrian Academy of Science
Institute for Nuclear Research
Russian Academy of Science
Technical University of Berlin
University of Opole
Aalto University
Physikalisch Technische Bundesanstalt (PTB)
Kyoto University
Institute of Plasma Physics Chinese Academy of Sciences
Institute of Plasma Physics, Academy of Sciences of the Czech Republic
Istituto di Fisica del Plasma Piero Caldirola
Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU
Universität in Rostock
Lawrence University, Appleton
CNR

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Samenvatting

In this paper, we present a method for numerical computation of collective Thomson scattering (CTS). We developed a forward model, eCTS, in the electrostatic approximation and benchmarked it against a full electromagnetic model. Differences between the electrostatic and the electromagnetic models are discussed. The sensitivity of the results to the ion temperature and the plasma composition is demonstrated. We integrated the model into the Bayesian data analysis framework Minerva and used it for the analysis of noisy synthetic data sets produced by a full electromagnetic model. It is shown that eCTS can be used for the inference of the bulk ion temperature. The model has been used to infer the bulk ion temperature from the first CTS measurements on Wendelstein 7-X.

Originele taal-2	Engels
Artikelnummer	023501
Tijdschrift	Review of Scientific Instruments
Volume	90
Nummer van het tijdschrift	2
DOI's	https://doi.org/10.1063/1.5048361
Status	Gepubliceerd - 1 feb 2019

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10.1063/1.5048361

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@article{4b0f8bfe5bae4505bc60581151d89226,

title = "Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas: Electrostatic approximation",

abstract = "In this paper, we present a method for numerical computation of collective Thomson scattering (CTS). We developed a forward model, eCTS, in the electrostatic approximation and benchmarked it against a full electromagnetic model. Differences between the electrostatic and the electromagnetic models are discussed. The sensitivity of the results to the ion temperature and the plasma composition is demonstrated. We integrated the model into the Bayesian data analysis framework Minerva and used it for the analysis of noisy synthetic data sets produced by a full electromagnetic model. It is shown that eCTS can be used for the inference of the bulk ion temperature. The model has been used to infer the bulk ion temperature from the first CTS measurements on Wendelstein 7-X.",

author = "I. Abramovic and A. Pavone and D. Moseev and \{Lopes Cardozo\}, \{N. J.\} and M. Salewski and Laqua, \{H. P.\} and M. Stejner and T. Stange and S. Marsen and Nielsen, \{S. K.\} and T. Jensen and W. Kasparek and Wolf, \{R. C.\} and A. Ali and A. Alonso and J. Baldzuhn and C. Beidler and M. Beurskens and C. Biedermann and Bosch, \{H. S.\} and S. Bozhenkov and R. Brakel and A. Dinklage and Y. Feng and G. Fuchert and J. Geiger and O. Grulke and P. Helander and M. Hirsch and U. H{\"o}fel and M. Jakubowski and J. Knauer and G. Kocsis and R. K{\"o}nig and P. Kornejew and A. Kr{\"a}mer-Flecken and M. Krychowiak and M. Landreman and A. Langenberg and S. Lazerson and H. Maa{\ss}berg and M. Marushchenko and H. Niemann and N. Pablant and T. Wauters and F. Durodie and A. Goriaev and J. Ongena and M. Vergote and M. Vervier and \{W7-X Team\}",

note = "Publisher Copyright: {\textcopyright} 2019 Author(s).",

year = "2019",

month = feb,

day = "1",

doi = "10.1063/1.5048361",

language = "English",

volume = "90",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

number = "2",

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TY - JOUR

T1 - Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas

T2 - Electrostatic approximation

AU - Abramovic, I.

AU - Pavone, A.

AU - Moseev, D.

AU - Lopes Cardozo, N. J.

AU - Salewski, M.

AU - Laqua, H. P.

AU - Stejner, M.

AU - Stange, T.

AU - Marsen, S.

AU - Nielsen, S. K.

AU - Jensen, T.

AU - Kasparek, W.

AU - Wolf, R. C.

AU - Ali, A.

AU - Alonso, A.

AU - Baldzuhn, J.

AU - Beidler, C.

AU - Beurskens, M.

AU - Biedermann, C.

AU - Bosch, H. S.

AU - Bozhenkov, S.

AU - Brakel, R.

AU - Dinklage, A.

AU - Feng, Y.

AU - Fuchert, G.

AU - Geiger, J.

AU - Grulke, O.

AU - Helander, P.

AU - Hirsch, M.

AU - Höfel, U.

AU - Jakubowski, M.

AU - Knauer, J.

AU - Kocsis, G.

AU - König, R.

AU - Kornejew, P.

AU - Krämer-Flecken, A.

AU - Krychowiak, M.

AU - Landreman, M.

AU - Langenberg, A.

AU - Lazerson, S.

AU - Maaßberg, H.

AU - Marushchenko, M.

AU - Niemann, H.

AU - Pablant, N.

AU - Wauters, T.

AU - Durodie, F.

AU - Goriaev, A.

AU - Ongena, J.

AU - Vergote, M.

AU - Vervier, M.

AU - W7-X Team

PY - 2019/2/1

Y1 - 2019/2/1

N2 - In this paper, we present a method for numerical computation of collective Thomson scattering (CTS). We developed a forward model, eCTS, in the electrostatic approximation and benchmarked it against a full electromagnetic model. Differences between the electrostatic and the electromagnetic models are discussed. The sensitivity of the results to the ion temperature and the plasma composition is demonstrated. We integrated the model into the Bayesian data analysis framework Minerva and used it for the analysis of noisy synthetic data sets produced by a full electromagnetic model. It is shown that eCTS can be used for the inference of the bulk ion temperature. The model has been used to infer the bulk ion temperature from the first CTS measurements on Wendelstein 7-X.

AB - In this paper, we present a method for numerical computation of collective Thomson scattering (CTS). We developed a forward model, eCTS, in the electrostatic approximation and benchmarked it against a full electromagnetic model. Differences between the electrostatic and the electromagnetic models are discussed. The sensitivity of the results to the ion temperature and the plasma composition is demonstrated. We integrated the model into the Bayesian data analysis framework Minerva and used it for the analysis of noisy synthetic data sets produced by a full electromagnetic model. It is shown that eCTS can be used for the inference of the bulk ion temperature. The model has been used to infer the bulk ion temperature from the first CTS measurements on Wendelstein 7-X.

UR - https://www.scopus.com/pages/publications/85061342826

U2 - 10.1063/1.5048361

DO - 10.1063/1.5048361

M3 - Article

C2 - 30831775

AN - SCOPUS:85061342826

SN - 0034-6748

VL - 90

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 2

M1 - 023501

ER -

Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas: Electrostatic approximation

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