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简介：Themaingoalofdivertorphysicsistodeterminetheedgeplasmatemperature,density,powerdispersal,powerasymmetrybetweeninwardtargetandoutwardone,thecontrolabilityofimpurityandneutralparticles.Aboveparameterswillchangewithplasmadensityorheatingpower.Theycanbedividedinto3regimes:linearregime,highrecyclingoneanddetachedone.

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简介：DuetothecomplicatedconstitutionandhighprecisionrequirementsoftheEASTsuperconductingtokamak,ameticulousassemblingprocedureandmeasurementschememustbeestablished.ThebigsizeandmassoftheEASTmachine'scomponentsandcomplicatedconfigurationwithtightinstallationtolerancescallforahighlycarefulassemblingprocedure.Theassemblingprocedureconsistsofthreemainsub-proceduresfortheassemblingofthebase,ofthetorioftheVV,thevacuumvesselTSandtheTF,andoftheperipheralpartsrespectively.Beforetheassembly,areferenceframeworkhasbeensetupbymeansofanindustrialmeasurementsystemwithreferencefiducialtargetsfixedonthewallofthetesthall.Inthispaper,theassemblingprocedureisdescribedindetail,thesurveycontrolsystemoftheassemblyisdiscussed,andprogressintheassemblyworkisalsoreported.

简介：HL-2AisthefirsttokamakwithdivertorinChina.TheobjectivesofHL-2Aaretoproducemoreadaptabledivertorconfigurationstostudyenergyexhaustandimpuritycontrol,andtostudyenhancedcoreplasmaconfinementbyprofilecontrolandmoderateplasmashaping.HL-2Ahaswelloptimizedoperationalflexibilityandexcellentaccessi-bilityforthediagnosticsystemstofacilitatevariousplasmaexperiments.

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简介：AFokker-Planckstudyiscarriedoutfortokamaklowerhybridcurrentdrivewithconsideringthewavesentoftrappingabsorptioninthepreeffectsituation.ThisFokker-PlanckcodeisdevelopedbasedonFASTFP,andsuitableforvariousauxiliaryheatingandcurrentdrivesituationsTheenergylossmechanismthroughanomaloustransportismodeledbyusingasuitablelosstenn.Intheheatingphase,theelectrondistributiondeviatesfromtheMaxwellianclearly,

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简介：Itisoftenstatedthatevencleantokamakdischargesdisruptathighdensity.Onepossibilityisthatsuchdisruptionresultfromtheenergylossarisingfromhydrogenrecyclingattheedgeoftheplasma.thisenergylosscouldleadtoacontractionofthecurrentchannelandtheproductionofadisruptivelyunstableconfiguration.

简介：Inlargetokamakdeviceandreactordesigns,therelationshipbetweenthetoroidalcurrentandtheedgesafetyfactorisveryimportantbecausethiswilldeterminetheeventualdeviceorreactorsizeaccordingtoMHDstabilityrequirements.Inmanypreliminary

简介：Lower-hybridcurrentdrive(LHCD)experimentswerecarriedouttheHL-1Mhydrogenplasmas.TheeffectofLHCDoncentralMHDactivities[sawtooth(m=0),m=1mode]werestudiedwiththefluctuationsobservationofthesoftX-ray(SXR)emission.

简介：Therearetwokindsofchargingmodeoftheohmpowersupply.Whenthedeviceworksnormallyandtheplasmabreakdownvoltageislow,theohmpowersupplywillruninthelogicalnon-loopcurrentmodewhichcurrentissymmetrical,butwhenthedischargingconditionisnotverywellandtheplasmabreakdownvoltageishigh,theunsymmetricalmodewillbeadopt,i.e.switchingoffthepositiverectifier,

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