About: Modern numerical methods for plasma tomography optimisation

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Tomography is a technique which is widely applied to fusion plasmas as it can provide improved understanding of plasma emissivity distributions. An optimised version of robust and fast tomographic algorithm based on the Tikhonov regularisation constrained to Minimum Fisher Information is presented in this contribution. A new regularisation matrix enforcing preferential emissivity smoothness along magnetic flux surfaces is introduced. The paper also details application of advanced numerical methods which lead to a substantial decrease in computation time. Subsequent implementation of fast presolvers of the inverse problem further contributes to the algorithm’s efficiency and also an improved stability of the tomography reconstruction. Finally, reliability and performance of the tomography algorithm is exemplified by the reconstruction of soft X-ray data evolution following tungsten ablation into a JET plasma. The resulting speed of reconstruction is compared to other referenced Tomography is a technique which is widely applied to fusion plasmas as it can provide improved understanding of plasma emissivity distributions. An optimised version of robust and fast tomographic algorithm based on the Tikhonov regularisation constrained to Minimum Fisher Information is presented in this contribution. A new regularisation matrix enforcing preferential emissivity smoothness along magnetic flux surfaces is introduced. The paper also details application of advanced numerical methods which lead to a substantial decrease in computation time. Subsequent implementation of fast presolvers of the inverse problem further contributes to the algorithm’s efficiency and also an improved stability of the tomography reconstruction. Finally, reliability and performance of the tomography algorithm is exemplified by the reconstruction of soft X-ray data evolution following tungsten ablation into a JET plasma. The resulting speed of reconstruction is compared to other referenced (en)
Title	Modern numerical methods for plasma tomography optimisation Modern numerical methods for plasma tomography optimisation (en)
skos:prefLabel	Modern numerical methods for plasma tomography optimisation Modern numerical methods for plasma tomography optimisation (en)
skos:notation	RIV/61389021:_____/12:00383250!RIV13-GA0-61389021
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GAP205/10/2055), P(LG11018), S, Z(AV0Z20430508)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Mlynář, Jan Odstrčil, Michal
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	151295
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/12:00383250
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Soft X-rays; Tomography; Fusion plasmas; Imaging; MFI; Tokamak (en)
http://linked.open.../riv/klicoveSlovo	MFI Imaging Tokamak Tomography Fusion plasmas Soft X-rays
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[278BC32E96B4]
http://linked.open...i/riv/nazevZdroje	Nuclear Instruments & Methods in Physics Research Section A
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Cooperation in fusion research on the joint European tokamak JET Numerical analyses and physical interpretation of the ITER-relevant experimental data from the Joint European Torus JET
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	686
http://linked.open...iv/tvurceVysledku	Mlynář, Jan Murari, A. Odstrčil, Michal Alper, B. Odstrčil, T.
http://linked.open...ain/vavai/riv/wos	000307091100023
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications
issn	0168-9002
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.nima.2012.05.063

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