简介:TheinjectionandextractionsystemofChargeStrippingInjection(CSI)and1ChargeStrippingInjectionofHIRFL-CSRprogressedsteadilyinslowextractionofCSRm,designand2001.Theprogresscoversdesigndevelopmentofcomponents.ForbeamaccumulationschemesofCSRm,besidesofMultipleMulti-turnInjection(MMI)andRFStacking(RFS),ChargeStrippingInjection(CSI)isdesignedforaccumulationoflightions(C~Ne).It’swellknown
简介:Thispaperdealswithamethodologyforsinglegatelocationoptimizationforplasticinjectionmold.Theobjectiveofthegateoptimizationistominimizethewarpageofinjectionmoldedparts,becausewarpageisacrucialqualityissueformostinjectionmoldedpartswhileitisinfluencedgreatlybythegatelocation.Featurewarpageisdefinedastheratioofmaximumdisplacementonthefeaturesurfacetotheprojectedlengthofthefeaturesurfacetodescribepartwarpage.Theoptimizationiscombinedwiththenumericalsimulationtechnologytofindtheoptimalgatelocation,inwhichthesimulatedannealingalgorithmisusedtosearchfortheoptimum.Finally,anexampleisdiscussedinthepaperanditcanbeconcludedthattheproposedmethodiseffective.
简介:Ininjectionmouldingproduction,thetuningoftheprocessparametersisachallengingjob,whichreliesheavilyontheexperienceofskilledoperators.Inthispaper,takingintoconsiderationoperatorassessmentduringmouldingtrials,anovelintelligentmodelforautomatedtuningofprocessparametersisproposed.Thisconsistsofcasebasedreasoning(CBR),empiricalmodel(EM),andfuzzylogic(FL)methods.CBRandEMareusedtoimitaterecallandintuitivethoughtsofskilledoperators,respectively,whileFLisadoptedtosimulatetheskilledoperatoroptimizationthoughts.First,CBRisusedtosetuptheinitialprocessparameters.IfCBRfails,EMisemployedtocalculatetheinitialparameters.Next,amouldingtrialisperformedusingtheinitialparameters.ThenFLisadoptedtooptimizetheseparametersandcorrectdefectsrepeatedlyuntilthemouldedpartisfoundtobesatisfactory.Basedontheabovemethodologies,intelligentsoftwarewasdevelopedandembeddedinthecontrollerofaninjectionmouldingmachine.Experimentalresultsshowthattheintelligentsoftwarecanbeeffectivelyusedinpracticalproduction,anditgreatlyreducesthedependenceontheexperienceoftheoperators.
简介:Wehaveoptimizedtheinputpulsewidthandinjectiontimetoachievethehighestpossibleoutputpulseenergyinadouble-passlaseramplifierusingtwoNd:YAGrods.Forthispurpose,wehaveextendedtheFrantz–Nodvikequationbysimultaneouslyincludingbothspontaneousemissionandpumpenergyvariation.Theeffectivepumpenergyoftheflashlampwas8.84Jforeachgainmedium.Theenergyof1Jcouldbeamplifiedtoanoutputenergyof12.17Jwiththemaximumachievedextractionefficiencyof63.18%whenaninputpulsehavingapulsewidthof168μsissent10μsaftertheabsorbedpumpenergybecomesthemaximumvalue.
简介:Whenwespeakofclusters,wehaveinmindentitieswhichhaveneitherthewell-definedcompositions,geometries,andstrongbondsofconventionalmoleculesnortheboundary-independentpropertiesofbulkmatter.Forexample,anaggregateofafewatomsheldtogetherbyVanderWaalsforcesconstitutesacluster.Butclustersneednotbeweaklybound,severalmetalatomsboundtogetheralsoconstituteacluster.Clustersneednotbecomposedofasinglekindofchemicalentity,eitheratomicormolecular,
简介:Pelletinjectionexperimentshavebeenwidelycarriedoutwithvarioustoroidalplasmas,peakeddensityprofileandimprovedconfinementarefrequentlyobserved,andsomeinterestingphenomenahavealsobeenfound.Oneofthemisthelong-livedm=1/n=1oscillationobservedonsoftX-rayemissionandotherdiagnostics(notablythemicrowaveinterferometersandtheECEsystems)afterpelletinjectioninJET,JT-60,
简介:Ionization-inducedelectroninjectioninlaserwakefieldaccelerators,whichwasrecentlyproposedtolowerthelaserintensitythresholdforelectrontrappingintothewakewave,hasthedrawbackofgeneratingelectronbeamswithlargeandcontinuousenergyspreads,severelylimitingtheirfutureapplications.Complextargetdesignsbasedonseparatingtheelectrontrappingandaccelerationstageswereproposedastheonlywayforgettingsmallenergy-spreadelectronbeams.Here,basedontheself-truncatedionization-injectionconceptwhichrequirestheuseofunmatchedlaser–plasmaparametersandbyusingtensofTWlaserpulsesfocusedontoagasjetofheliummixedwithlowconcentrationsofnitrogen,wedemonstratesingle-stagelaserwakefieldaccelerationofmulti-hundredMeVelectronbuncheswithenergyspreadsofafewpercent.TheexperimentalresultsareverifiedbyPICsimulations.
简介:Aneight-shotspelletinjection(PI)andasupersonicmolecularbeaminjection(SMBI)systemhaveproposedanddevelopedontheHL-1Mtokamakforadvancedfuellingexperiments.ThepeakeddensityprofileandimprovedconfinementaretypicalfeatureofPIandSMBIdischarge.ItstronglydependsonthewallrecyclingconditionsoftheHL-1Mtokamakandinjectionparameters.
简介:Recently,theL-modetoH-mode(L-H)transitionintokamakplasmaconfinementwasfoundtoberelatedtothepresenceofthepoloidalflowshearneartheplasmaedge.Animportantmechanismistheionorbitlosscausedbyinteractionwiththelimiter.AcomplementaryexplanationisthegenerationofpoloidalflowsbyplasmafluctuationsviatheReynoldsstressandthepoloidalspin-upofplasmasfrompoloidalasymmetryofparticleandmomentumsources.