Abstract
Towards the integrated analysis of tokamak plasma equilibria: PLEQUEL. Kripner1,2, M.
Tomeš1,2, J. Urban1, O.
Grover1,3, O. Ficker1,3, E.
Mac úšová1, 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