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Minimum Fisher Tikhonov Regularization Adapted to Real-Time Tomography
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SYSNO ASEP 0462313 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Minimum Fisher Tikhonov Regularization Adapted to Real-Time Tomography Author(s) Löffelmann, Viktor (UFP-V)
Mlynář, Jan (UFP-V) RID
Imríšek, Martin (UFP-V) RID
Mazon, D. (FR)
Jardin, A. (FR)
Weinzettl, Vladimír (UFP-V) RID, ORCID
Hron, Martin (UFP-V) RID, ORCIDSource Title Fusion Science and Technology. - : Taylor & Francis - ISSN 1536-1055
Roč. 69, č. 2 (2016), s. 505-513Number of pages 9 s. Publication form Print - P Language eng - English Country US - United States Keywords tokamak ; tomography ; real - time Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects LG14002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2011021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 UT WOS 000373599700004 EID SCOPUS 84962727672 DOI 10.13182/FST15-180 Annotation Tomography inversion has been used routinely for processing outputs of plasma radiation diagnostics. Various tomographic algorithms have been developed, with those based on Tikhonov regularization being among the fastest while still providing reliable results. This paper presents a further speed optimization of the minimum Fisher Tikhonov regularization algorithm based on reducing iteration cycles used during the calculation. Ten to twentyfold speed gain is achieved compared to the original implementation. Robustness of the new method is demonstrated using both artificially generated data sets and real data from the soft X-ray diagnostics at the COMPASS tokamak. The advantage gained by the optimization is investigated in particular with respect to the possibility of real-time control of the plasma position; the option of impurity control is also discussed. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2017
Number of the records: 1