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  • 简介:Thegasdynamicandelectromagneticfactorsaffectingthepositionofarcrootsinatubulararcheaterareanalyzed.Magnitudesofthevariousfactorsareestimatedthroughnumericalmodelling,andtheoverallactiononthearcassessed.Itisfoundthattheactionsonthearcintherearelectrodecanbebalancedinastablemannerandthearcrootcanbestabilizedatacertainaxialposition.Inthefrontelectrode,thevariousfactorscannotbebalanced,andthearerootcanonlystaywithintheelectrodethroughthemechanismofrecurrentshunting.Theseconclusionsagreewithexperimentalobservations.

  • 标签: ARC HEATER ARC STABILIZATION ARC POSITION
  • 简介:Inthispaper,theinfluenceofthermalperformanceofcathode-heaterassemblyofTravelingWaveTube(TWT),whichhasdifferentcontactformbetweeninnerheatshieldandsupportingcylinder,isanalyzedusingthesimulationsoftwareANSYS.Withboththermalradiationandheatconductionareconsidered,thetemperatureandheatfluxdistributionofstructureswithdifferentcontactformarecalculated,andalsostartingtimewhichisneededbeforetemperaturecomeintosteadystatus.Theresultofanalysissuggeststhatchangingthecontactformbetweeninnerheatshieldandsupportcylindercaninfluencethethermalperformanceofcathode-heaterassemblyandimproveassembly'stemperaturedistributionandpromoteheater'sheatingefficiency.Theresultofthispaperprovidestheoreticalguidanceinthedesignofcathode-heaterassembly.

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