Počet záznamů: 1
Investigation of inversion methods for calculation of soft X-ray-based plasma position and its consistency with magneticall determined position on tokamaks
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SYSNO ASEP 0471067 Druh ASEP A - Abstrakt Zařazení RIV O - Ostatní Název Investigation of inversion methods for calculation of soft X-ray-based plasma position and its consistency with magneticall determined position on tokamaks Tvůrce(i) Imríšek, Martin (UFP-V) RID
Mlynář, Jan (UFP-V) RID
Odstrčil, T. (DE)
Odstrčil, M. (GB)
Svoboda, J. (CZ)
Löffelmann, V. (CZ)
Ficker, Ondřej (UFP-V) ORCID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Hron, Martin (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RIDZdroj.dok. Bulletin of the American Physical Society, 58th Annual Meeting of the APS Division of Plasma Physics, 18. - San Jose : American Physical Society, 2016 - ISSN 0003-0503
S. 112Poč.str. 1 s. Forma vydání Online - E Akce APS 58th Annual Meeting of the APS Division of Plasma Physics /58./ Datum konání 31.10.2016 - 04.11.2016 Místo konání San Jose, California Země US - Spojené státy americké Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova plasma position ; tomography ; soft x-ray ; Tikhonov regularization Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP LG14002 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFP-V - RVO:61389021 Anotace Distribution of soft X-ray (SXR) radiation in tokamak plasma can be reconstructed via tomography from line integrated measurements. The center of mass of the SXR distribution gives reliable information about plasma position assuming a
primary source being bremsstrahlung. The Tikhonov regularization constrained by the minimum Fisher information is often applied to
solve the ill-posed and underdetermined plasma tomography. There are two ways how to apply this method on large datasets: to use either a rapid version that process all time slices simultaneously or linear inversion methods which provide the center of radiation
as a scalar product of the measured data and precomputed weight vector. Here, robustness, reliability and computational time of various methods of the calculation of the center of SXR emissivity are compared on modeled and real data. Furthermore, consistency of the magnetic and SXR plasma position influenced by the plasma shape and impurities is analyzed and discussed.
Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2017
Počet záznamů: 1