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Inversion techniques in the Soft X-Ray tomography of fusion plasmas: towards real-time applications
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SYSNO ASEP 0350274 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Inversion techniques in the Soft X-Ray tomography of fusion plasmas: towards real-time applications Author(s) Mlynář, Jan (UFP-V) RID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Bonheure, G. (BE)
Murari, A. (IT)Source Title Fusion Science and Technology. - : Taylor & Francis - ISSN 1536-1055
Roč. 58, č. 3 (2010), s. 733-741Number of pages 9 s. Publication form web - web Action Workshop on Fusion Data Processing, Validation and Ananlyses/6th./ Event date 25.01.2010-27.01.2010 VEvent location Madrid Country ES - Spain Event type EUR Language eng - English Country US - United States Keywords plasma tomography ; real-time control ; soft-X-ray diagnostics Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GAP205/10/2055 GA ČR - Czech Science Foundation (CSF) GA202/09/1467 GA ČR - Czech Science Foundation (CSF) LA08048 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000284174400004 Annotation The tomography of fusion plasmas provides local information on plasma emissivity from line-integrated measurements (projections). However, the corresponding inversion task presents an ill-posed and often underdetermined problem. Compared to industrial and medical tomography systems, data in fusion research are spatially sparse due to the limited number of lines of sight, and they may vary rapidly in time. Therefore, dedicated inversion techniques have been developed that allow for lower spatial resolution and implementation of a priori information and constraints. In this contribution, the main inversion techniques used today are reviewed, with working results and challenges outlined. Special attention is given to techniques that allow for rapid tomography inversions, because of their future potential for real-time applications, and a new combined technique is proposed. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2011
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