Fitting of the Thomson scattering density and temperature profiles on the COMPASS tokamak

0464732 - ÚFP 2017 RIV US eng J - Journal Article
Štefániková, Estera - Peterka, Matěj - Böhm, Petr - Bílková, Petra - Aftanas, Milan - Sos, M. - Urban, Jakub - Hron, Martin - Pánek, Radomír
Fitting of the Thomson scattering density and temperature profiles on the COMPASS tokamak.
Review of Scientific Instruments. Roč. 87, č. 11 (2016), č. článku 11E536. ISSN 0034-6748. E-ISSN 1089-7623.
[Topical Conference on High-Temperature Plasma Diagnostics 2016/21./. Madison, Wisconsin, 05.06.2016-09.06.2016]
R&D Projects: GA ČR(CZ) GA14-35260S; GA MŠMT(CZ) 8D15001; GA MŠMT(CZ) LM2015045
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : pedestal * fitting * instrument function
OECD category: 2.11 Other engineering and technologies
Impact factor: 1.515, year: 2016
http://scitation.aip.org/content/aip/journal/rsi/87/11/10.1063/1.4961554

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.
Permanent Link: http://hdl.handle.net/11104/0263511