Perspektivy minimální Fisherovy regularizace v experimentální analýze transportu částic v plazmatu tokamaku JET

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F06%3A00078707" target="_blank" >RIV/61389021:_____/06:00078707 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Prospects of the Minimum Fisher Regularisation in the Experimental Analyses of Plasma Particle Transport at JET

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Prospects of the Minimum Fisher Regularisation in the Experimental Analyses of Plasma Particle Transport at JET

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Bulletin of the American Physical Society

ISSN

0003-0503

e-ISSN

—

Svazek periodika

51

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

1

Strana od-do

196

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—