CONCEPTUAL DESIGN OF概念设计 超导磁体线圈

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1、4.CONCEPTUALDESIGNOFSUPERCONDUCTINGMAGNETCOILSThomasKupiszewskiOwenR.ChristiansonContents4.1.INTRODUCTION...............................4-14.2.DESIGNOFMAGNETINTERNALS....................4-34.2.1.Description..............................4-34.2.2.Rationale...............................4-124.2.

2、3.CoolingDesignOptionsforInsertCoil...............4-154.3.DESIGNANALYSIS..............................4-164.3.1.CoilGrading.............................4-164.3.2.ThermalHydraulicPerformance...................4-244.3.3.ConductorStability..........................4-274.3.4.QuenchPerformance....

3、.....................4-344.4.SUMMARYANDCONCLUSIONS......................4-46REFERENCES.....................................4-504.CONCEPTUALDESIGNOFSUPERCONDUCTINGMAGNETCOILS4.1.INTRODUCTIONStellaratorsaresteady-statemagneticconnementfusiondevices.Unliketokamaks,whichutilizeacombinationofacan

4、ddcmagneticelds,stellaratorsuseonlydcmagnetssincepoloidal-eldmodulationisnotrequiredduringplasmastart-uporforpositioncontrol.Fromamagnetdesignperspective,theadvantagesinherenttothestellaratorarethesuitabilityofconventionalvoltagecomparisontechniquesforquenchdetectionanddeviceoperationwithou

5、tsuperconductoraclosses.Inthiswork,aconceptualmagnetinternaldesignisdevelopedtomeettheoperatingrequirementsrepresentativeofstellaratorpowerplants.Theserequirements,establishedbytheStellaratorPowerPlantStudy(SPPS)forthemodularHelias-likeheliac(MHH),arepresentedinTable4.1-I.Keydesigndriversaret

6、he14.5Tpeakmagneticeldintensityand34.7MA/m2eectivecoilcurrentdensity,alongwithamaximumnuclearheatinputtothecoilofroughly800W/m3.Thiscombinationofrequirementsprovidesanunprecedentedcoolingdesignchallenge.Itimpliesmagnetdesignfeasibilityisstronglycoupledtomitigationofhotspottemperaturerisefor

7、thistypeofapplication.Alsonoteworthy,asillustratedinFig.4.1-1,isthehighlynon-planar,non-symmetricgeometryofthemagnetcoilsastheyarepresentlyenvisionedforstellarator-basedpowerplants.Themostsignicantgeometriccharacteristicofthesecoilsisthepres