Towards a new image processing system at Wendelstein 7-X: From spatial calibration to characterization of thermal events

W7-X Team

doi:10.1063/1.5045560

Towards a new image processing system at Wendelstein 7-X: From spatial calibration to characterization of thermal events

W7-X Team

University of Cagliari
Max-Planck-Institut für Plasmaphysik
University of Szczecin
Los Alamos National Laboratory
CIEMAT
Wigner Research Centre for Physics
FORSCHUNGSZENTRUM JULICH GMBH
University of Maryland, College Park
Princeton Plasma Physics Laboratory
Lithuanian Energy Institute
Massachusetts Institute of Technology
University of Wisconsin-Madison
Narodowe Centrum Badań Jadrowych
KARLSRUHER INSTITUT FUER TECHNOLOGIE
The Australian National University
Eindhoven University of Technology
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 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 (CEA)
Culham Centre for Fusion Energy
Budker Institute of Nuclear Physics (BINP)
University of Stuttgart
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

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

15 Citations (Scopus)

Résumé

Wendelstein 7-X (W7-X) is the most advanced fusion experiment in the stellarator line and is aimed at proving that the stellarator concept is suitable for a fusion reactor. One of the most important issues for fusion reactors is the monitoring of plasma facing components when exposed to very high heat loads, through the use of visible and infrared (IR) cameras. In this paper, a new image processing system for the analysis of the strike lines on the inboard limiters from the first W7-X experimental campaign is presented. This system builds a model of the IR cameras through the use of spatial calibration techniques, helping to characterize the strike lines by using the information given by real spatial coordinates of each pixel. The characterization of the strike lines is made in terms of position, size, and shape, after projecting the camera image in a 2D grid which tries to preserve the curvilinear surface distances between points. The description of the strike-line shape is made by means of the Fourier Descriptors.

langue originale	Anglais
Numéro d'article	123503
journal	Review of Scientific Instruments
Volume	89
Numéro de publication	12
Les DOIs	https://doi.org/10.1063/1.5045560
état	Publié - 1 déc. 2018

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10.1063/1.5045560

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@article{55233d9cfc8c45f9a065471f43bea6ed,

title = "Towards a new image processing system at Wendelstein 7-X: From spatial calibration to characterization of thermal events",

abstract = "Wendelstein 7-X (W7-X) is the most advanced fusion experiment in the stellarator line and is aimed at proving that the stellarator concept is suitable for a fusion reactor. One of the most important issues for fusion reactors is the monitoring of plasma facing components when exposed to very high heat loads, through the use of visible and infrared (IR) cameras. In this paper, a new image processing system for the analysis of the strike lines on the inboard limiters from the first W7-X experimental campaign is presented. This system builds a model of the IR cameras through the use of spatial calibration techniques, helping to characterize the strike lines by using the information given by real spatial coordinates of each pixel. The characterization of the strike lines is made in terms of position, size, and shape, after projecting the camera image in a 2D grid which tries to preserve the curvilinear surface distances between points. The description of the strike-line shape is made by means of the Fourier Descriptors.",

author = "F. Pisano and B. Cannas and Jakubowski, \{M. W.\} and H. Niemann and \{Puig Sitjes\}, A. and Wurden, \{G. A.\} 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 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 Laqua, \{H. P.\} and S. Lazerson and H. Maa{\ss}berg and S. Marsen and M. Marushchenko and D. Moseev and N. Pablant and E. Pasch and K. Rahbarnia and G. Schlisio and T. Stange and \{Sunn Pedersen\}, T. 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} 2018 EURATOM.",

year = "2018",

month = dec,

day = "1",

doi = "10.1063/1.5045560",

language = "English",

volume = "89",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

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TY - JOUR

T1 - Towards a new image processing system at Wendelstein 7-X

T2 - From spatial calibration to characterization of thermal events

AU - Pisano, F.

AU - Cannas, B.

AU - Jakubowski, M. W.

AU - Niemann, H.

AU - Puig Sitjes, A.

AU - Wurden, G. A.

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 - 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 - Laqua, H. P.

AU - Lazerson, S.

AU - Maaßberg, H.

AU - Marsen, S.

AU - Marushchenko, M.

AU - Moseev, D.

AU - Pablant, N.

AU - Pasch, E.

AU - Rahbarnia, K.

AU - Schlisio, G.

AU - Stange, T.

AU - Sunn Pedersen, T.

AU - Wauters, T.

AU - Durodie, F.

AU - Goriaev, A.

AU - Ongena, J.

AU - Vergote, M.

AU - Vervier, M.

AU - W7-X Team

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Wendelstein 7-X (W7-X) is the most advanced fusion experiment in the stellarator line and is aimed at proving that the stellarator concept is suitable for a fusion reactor. One of the most important issues for fusion reactors is the monitoring of plasma facing components when exposed to very high heat loads, through the use of visible and infrared (IR) cameras. In this paper, a new image processing system for the analysis of the strike lines on the inboard limiters from the first W7-X experimental campaign is presented. This system builds a model of the IR cameras through the use of spatial calibration techniques, helping to characterize the strike lines by using the information given by real spatial coordinates of each pixel. The characterization of the strike lines is made in terms of position, size, and shape, after projecting the camera image in a 2D grid which tries to preserve the curvilinear surface distances between points. The description of the strike-line shape is made by means of the Fourier Descriptors.

AB - Wendelstein 7-X (W7-X) is the most advanced fusion experiment in the stellarator line and is aimed at proving that the stellarator concept is suitable for a fusion reactor. One of the most important issues for fusion reactors is the monitoring of plasma facing components when exposed to very high heat loads, through the use of visible and infrared (IR) cameras. In this paper, a new image processing system for the analysis of the strike lines on the inboard limiters from the first W7-X experimental campaign is presented. This system builds a model of the IR cameras through the use of spatial calibration techniques, helping to characterize the strike lines by using the information given by real spatial coordinates of each pixel. The characterization of the strike lines is made in terms of position, size, and shape, after projecting the camera image in a 2D grid which tries to preserve the curvilinear surface distances between points. The description of the strike-line shape is made by means of the Fourier Descriptors.

UR - https://www.scopus.com/pages/publications/85058549699

U2 - 10.1063/1.5045560

DO - 10.1063/1.5045560

M3 - Article

C2 - 30599560

AN - SCOPUS:85058549699

SN - 0034-6748

VL - 89

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 12

M1 - 123503

ER -

Towards a new image processing system at Wendelstein 7-X: From spatial calibration to characterization of thermal events

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