. "Alper, B." . "151295" . . . "686" . . "NL - Nizozemsko" . . "Odstr\u010Dil, Michal" . "Nuclear Instruments & Methods in Physics Research Section A" . "[278BC32E96B4]" . "RIV/61389021:_____/12:00383250!RIV13-GA0-61389021" . "Modern numerical methods for plasma tomography optimisation" . "000307091100023" . . "P(GAP205/10/2055), P(LG11018), S, Z(AV0Z20430508)" . . "9" . "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\u2019s 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 . . . "Mlyn\u00E1\u0159, Jan" . "6"^^ . . . . "10.1016/j.nima.2012.05.063" . "Modern numerical methods for plasma tomography optimisation"@en . "Modern numerical methods for plasma tomography optimisation" . "RIV/61389021:_____/12:00383250" . "5"^^ . . . . "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\u2019s 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" . "Soft X-rays; Tomography; Fusion plasmas; Imaging; MFI; Tokamak"@en . "Modern numerical methods for plasma tomography optimisation"@en . . . . "0168-9002" . "Odstr\u010Dil, T." . . . "Murari, A." . . "2"^^ . . . .