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Fitting of the Thomson scattering density and temperature profiles on the COMPASS tokamak
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. Institute of Plasma Physics of the CAS, Czech Republic.
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2016 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 87, no 11, 11E536Article in journal (Refereed) Published
Abstract [en]

A new technique for fitting the full radial profiles of electron density and temperature obtained by the Thomson scattering diagnostic in H-mode discharges on the COMPASS tokamak is described. The technique combines the conventionally used modified hyperbolic tangent function for the edge transport barrier (pedestal) fitting and a modification of a Gaussian function for fitting the core plasma. Low number of parameters of this combined function and their straightforward interpretability and controllability provide a robust method for obtaining physically reasonable profile fits. Deconvolution with the diagnostic instrument function is applied on the profile fit, taking into account the dependence on the actual magnetic configuration.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2016. Vol. 87, no 11, 11E536
Keyword [en]
Light scattering, Magnetoplasma, Tokamak devices, Combined functions, Edge transport barriers, Gaussian functions, Hyperbolic tangent function, Instrument functions, Magnetic configuration, Temperature profiles, Thomson scattering diagnostics, Hyperbolic functions, human, human tissue, plasma
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-195210DOI: 10.1063/1.4961554ISI: 000390242300251ScopusID: 2-s2.0-84984679656OAI: oai:DiVA.org:kth-195210DiVA: diva2:1047668
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QC 20161118

Available from: 2016-11-18 Created: 2016-11-02 Last updated: 2017-01-16Bibliographically approved

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Stefániková, Estera
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