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Soft X-ray tomography in support of impurity control in tokamaks
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SYSNO ASEP 0466026 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Soft X-ray tomography in support of impurity control in tokamaks Author(s) Mlynář, Jan (UFP-V) RID
Mazon, D. (FR)
Imríšek, Martin (UFP-V) RID
Löffelmann, Viktor (UFP-V)
Malard, P. (FR)
Odstrčil, T. (DE)
Tomeš, Matěj (UFP-V)
Vezinet, V. (DE)
Weinzettl, Vladimír (UFP-V) RID, ORCIDArticle number 012001 Source Title Journal of Physics: Conference Series, 768. - Bristol : IOP Publishing, Ltd., 2016 - ISSN 1742-6588 Number of pages 10 s. Publication form Print - P Action International Workshop & Summer School on Plasma Physics 2014 (IWSSPP’14)/6./ Event date 30.06.2014 - 06.07.2014 VEvent location Kiten Country BG - Bulgaria Event type WRD Language eng - English Country GB - United Kingdom Keywords soft X-ray ; tomography ; tokamak Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects GAP205/10/2055 GA ČR - Czech Science Foundation (CSF) 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 000439544000001 EID SCOPUS 84996928511 DOI 10.1088/1742-6596/768/1/012001 Annotation This contribution reviews an important example of current developments in diagnostic systems and data analysis tools aimed at improved understanding and control of transport processes in magnetically confined high temperature plasmas. The choice of tungsten
for the plasma facing components of ITER and probably also DEMO means that impurity control in fusion plasmas is now a crucial challenge. Soft X-ray (SXR) diagnostic systems serve as a key sensor for experimental studies of plasma impurity transport with a clear
prospective of its control via actuators based mainly on plasma heating systems. The SXR diagnostic systems typically feature high temporal resolution but limited spatial resolution due to access restrictions. In order to reconstruct the spatial distribution of the SXR radiation from line integrated measurements, appropriate tomographic methods have been developed and validated, while novel numerical methods relevant for real-time control have been proposed. Furthermore, in order to identify the main contributors to the SXR plasma radiation, at least partial control over the spectral sensitivity range of the detectors would be beneficial, which motivates for developments of novel SXR diagnostic methodsWorkplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2017
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