Abstrakt
Towards the integrated analysis of tokamak plasma equilibria: PLEQUEL. Kripner1,2, M.
Tomeš1,2, J. Urban1, O.
Grover1,3, O. Ficker1,3, E.
Macúšová1, M. Peterka1,2,J.
Krbec1,3, J. Čeřovský1,3, D. Fridrich11Institute of Plasma Physics of the CAS, Prague, Czech Republic2Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic3Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague, Prague,Czech RepublicTheequilibriumsolutionoftheGrad-Shafranovequationintheformofthe2DfunctionofpsiandoftheF(ψ)=RBtorfunctionandthepressurep(ψ)profileoffersfundamentalinformationaboutthetokamakplasmastate.Thecombinationofthesefunctionsprovidescomplexinformationabouttheplasmasuchasthetopology,plasmacurrents,andthemagneticfield.Plasmaequilibriumisusedforbothdataanalysisandasoneoftheinputsofcomputersimulations.KnownplasmaequilibriumplaysakeyroleinadesignofnewmachineslikeCOMPASS-UinPrague.Asaconsequence,equilibriumanalysistoolsarepartofthemostofsimulationcodesandtheyareincludedamongtheequipmentofmanytokamakplasmascientists.Nevertheless,aunifiedanduniversalpackageforsimpleandfastmanipulationofequilibriaisstillmissing.Inthiscontribution,wepresentanewopen-sourcepythonpackagePLEQUE(PLasmaEQUilibriumEnjoyment)[1]whichaimstosolvethisissue.Wefocusonfouraspectsofthepackage.Firstly,weintroducemethodsusedfortheinputanalysiswhichallowobtainingself-consistentinformation(e.g.x-point,magneticaxis,strike-points,orplasmaboundary).Secondly,wedemonstrateitspossibilitytobeintegratedwithothercodesviatheIMAS(ITERIntegratedModelling&AnalysisSuite)formatorstandardequilibriumg-eqdskformat.Theabilitytoreadsomerealtokamakmachineequilibriaisdemonstratedaswell.Thirdly,weshowthesimplehigh-levelinterfacetoobtaintherequesteddataassimplyandeasilyaspossible.Theinterfaceallowsanelegantabilitytoworkwithvarioustokamakcoordinatesystemandtomapprofilesofvariousquantitiesofpsitotheplasmaequilibrium.Finally,applicationssuchasfieldlinetracingwillbedemonstratedand used for magnetic field reconstruction in the presence of resonant magnetic perturbations.[1] https://github.com/kripnerl/pleque