用于射频超导腔制造的大晶粒铌材热导研究（英文）.docx

用于射频超导腔制造的大晶粒铌材热导研究（英文）
Title:ThermalConductivityStudyofLargeGrainNiobiumMaterialsforRadioFrequencySuperconductingCavityFabrication
Abstract:
Superconductingradiofrequency(SRF)cavitiesmadefromlargegrainniobiummaterialshaveattractedsignificantresearchattentionduetotheirpotentialtoachievehigherqualityfactorsandhigheracceleratinggradients.ThethermalpropertiesofthesematerialsplayacrucialroleinoptimizingtheperformanceofSRFcavities.ThispaperpresentsacomprehensivereviewofthethermalconductivitystudiesconductedonlargegrainniobiummaterialsforSRFcavityfabrication.Thefocusisonexploringthefactorsinfluencingthethermalconductivityandthetechniquesusedtomeasureandenhanceit.
Introduction:
SRFcavitiesareessentialcomponentsinparticleacceleratorsandareusedinawiderangeofapplications,suchasparticlecolliders,synchrotronlightsources,andmedicalaccelerators.Niobium,duetoitssuperconductingpropertiesatlowtemperatures,hasemergedasthematerialofchoiceforSRFcavityfabrication.LargegrainniobiummaterialshaverecentlygainedattentionduetotheirpotentialtoimprovetheperformanceofSRFcavities.Thispaperaimstoprovideanin-depthanalysisofthethermalconductivityoflargegrainniobiummaterialsanditsimplicationsforSRFcavitydesign.
Factorsinfluencingthermalconductivity:
Severalfactorsaffectthethermalconductivityoflargegrainniobiummaterials.Grainsize,impurities,andcrystaldefectsarekeyparametersthatdeterminethethermaltransportproperties.Thepaperdiscussestheroleofgrainboundariesanddislocationsinscatteringphonons,leadingtoareductioninthermalconductivity.Substitutionalimpuritiesandinterstitialimpuritiescanalsoaffectthethermalconductivitybyimpedingthephonontransportprocess.Theinfluenceofthesefactorsonthethermalconductivityoflargegrainniobiummaterialsinthesuperconductingstateisexplored.
Measurementtechniques:
Accuratemeasurementofthermalconductivityiscrucialforunderstandingtheheattransferpropertiesoflargegrainniobiummaterials.Thepaperprovidesanoverviewofvariousexperimentaltechniquesusedtomeasurethethermalconductivity,suchasthes