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| Description
| - Minimum Fisher Regularisation (MFR) proved to be a rapid and robust method in solving ill-conditioned inverse problems. This approach has been recently applied at JET for tomographic analysis of neutron emissivity based on data acquired by the JET neutron cameras. The reconstructed time evolution of 2D emissivity after tritium puff clearly shows the influx of fuel to the plasma core. Under certain assumptions, the observed emissivity evolution can be used to estimate fuel transport coefficients (i.e. diffusion coefficient and pinch velocity) near plasma core, including a possibility to trace down spatial behaviour of the two coefficients. In the procedure, Fuel Ratio method and Singular Value Decomposition analysis provide powerful tools. Preliminary results are presented in comparison with recently published trends in tritium confinement. Further possible optimisation of the existing regularisation constraints, in particular the properties of the emissivity smoothness are discussed.
- Minimum Fisher Regularisation (MFR) proved to be a rapid and robust method in solving ill-conditioned inverse problems. This approach has been recently applied at JET for tomographic analysis of neutron emissivity based on data acquired by the JET neutron cameras. The reconstructed time evolution of 2D emissivity after tritium puff clearly shows the influx of fuel to the plasma core. Under certain assumptions, the observed emissivity evolution can be used to estimate fuel transport coefficients (i.e. diffusion coefficient and pinch velocity) near plasma core, including a possibility to trace down spatial behaviour of the two coefficients. In the procedure, Fuel Ratio method and Singular Value Decomposition analysis provide powerful tools. Preliminary results are presented in comparison with recently published trends in tritium confinement. Further possible optimisation of the existing regularisation constraints, in particular the properties of the emissivity smoothness are discussed. (en)
- Na tokamaku JET se v poslední době aplikuje metoda minimální Fisherovy regularizace v tomografii vyzařování fúzních neutronů. Časový vývoj 2D vyzařování neutronů po vstřiku tritia jasně ukazuje tok paliva do centra plazmatu. Za určitých předpokladů lze pozorovaný vývoj použít k odhadu transportních koeficientů (tj. difúzního koeficientu a dostředné rychlosti) v blízkosti centra plazmatu. Práce prezentuje předběžné kvalitativní výsledky a diskutuje další kroky, jmenovitě nutné úpravy algoritmu tomografie, zejména shlazování, které pravděpodobně umožní kvantitativní určení transportních koeficientů. (cs)
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| Title
| - Prospects of the Minimum Fisher Regularisation in the Experimental Analyses of Plasma Particle Transport at JET
- Perspektivy minimální Fisherovy regularizace v experimentální analýze transportu částic v plazmatu tokamaku JET (cs)
- Prospects of the Minimum Fisher Regularisation in the Experimental Analyses of Plasma Particle Transport at JET (en)
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| skos:prefLabel
| - Prospects of the Minimum Fisher Regularisation in the Experimental Analyses of Plasma Particle Transport at JET
- Perspektivy minimální Fisherovy regularizace v experimentální analýze transportu částic v plazmatu tokamaku JET (cs)
- Prospects of the Minimum Fisher Regularisation in the Experimental Analyses of Plasma Particle Transport at JET (en)
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| skos:notation
| - RIV/61389021:_____/06:00078707!RIV07-AV0-61389021
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61389021:_____/06:00078707
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Tomography; transport; neutrons; fusion; tokamak; JET (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Bulletin of the American Physical Society
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Bonheure, G.
- Mlynář, Jan
- Murari, A.
- JET EFDA, contributors
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| is http://linked.open...avai/riv/vysledek
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