简介：Theconductorsofboththetoroidalfield(TF)andpoloidalfield(PF)coilsofEASTareNiTicable-in-conduitconductors(CICCs).ThesizesofthistypeofCICCare20.3mm×20.3mmand18.5mm~18.5mmrespectively.ArelevantR&DprogramhasbeencarriedoutforthreeyearsattheResearchandManufactureCenter(RMC)oftheInstituteofPlasmaPhysics,ChineseAcademyofSciences(ASIPP)toacquirethemanufacturingtechniquesandmasterthebehaviorofthetestingjoints.Basedontheexperiencegainedfromthemanufactureandtestofasub-cablejoint,threekindsofjointsweremade.Thefinaldesignwasdeterminedaftercarefullyevaluatingtheirsimplemechanism,goodcoolingline,lowerAClossandresistance,compactsize,andconvenienceformanufactureandon-siteassembly.Twostepsweredevelopedtocarryoutthefinaljoint.Thefirststepwasformingtheterminals'superconductors.Thesecondstepwasclampingthetwoterminalstogethertoensuretheirgoodcontactwiththecopperconductorsole.Thetwoterminalscouldbeconnectedindifferentdirectionstogettwokindsofconductorconnections.Ahydraulicinstrumentwasdevelopedtoimpacttheterminals.Itcouldimpacttheterminalsinhighaccuracyintermsoftheirsizeandshape.Thecrosssectionoftheterminalwastriedincircularandanellipticshape.Fivefull-sizejointsweremadeaccordingtothedesignandthentested.Whentheyweretestedinbathingcoldcondition,theirresistancewasfrom2nΩto4nΩ.Thelatestjointwastestedinrealworkingconditionswheretheresistancevariedfrom2nΩto12nΩ,dependingonthetestingcurrentrangingfrom2kAto10kA.

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简介：InthedischargeofEASTtokamak,itisobservedthat（2,1）neoclassicaltearingmode（NTM）istriggeredbymodecouplingwitha（1,1）internalmode.Usingsingularvaluedecomposition（SVD）methodforsoftX-rayemissionandforelectroncyclotronemission（ECE）,thecouplingspatialstructuresandcouplingprocessbetweenthesetwomodesareanalyzedindetail.TheresultsofSVDforECErevealthatthephasedifferencebetweenthesetwomodesequalstozero.Thisisconsistentwiththeperfectcouplingcondition.Finally,performingstatisticalanalysisofγ1/1,ζ1/1andω2/1,wefindthatγ1/1moreaccuratelyrepresentsthecouplingstrengththanζ1/1,andγ1/1isalsostronglyrelatedtothe（2,1）NTMtriggering,whereγ1/1isthewidthof（1,1）internalmode,ζ1/1istheperturbedamplitudeof（1,1）internalmode,andω2/1denotesthemagneticislandwidthof（2,1）NTM.

简介：TheHTScurrentleadsofsuperconductingmagnetsforlargescalefusiondevicesandhighenergyparticlecolliderscanreducethepowerconsumptionforcoolingby2/3comparedwithconventionalleads.Theresistivesectionsofhigh-ratedcurrentleadsareusuallymadeofaheatexchangercooledbygasflow.Thesupplyofthecoolingmassflowincursmorethan90%ofthecoolingcostfortheHTSleads.Themassflowraterequirementdependsnotonlyonthelengthandmaterialoftheresistiveheatexchanger,butalsoontheheattransfercoefficientandHEXsurface,thejointresistanceatthecoldendanditscoolingapproach.Thedesignandoperationofasheet-stackHEXwithalargerspecificsurfaceandamuchsmallerhydraulicdiameterarepresentedinthepaper.ThetestresultsofanHTSleadoptimizedfor8kAshowthata98.4%efficiencycanbeachieved.

简介：道德认知不能仅停留于知识层面。它最终应该内化为学生的一种品质,升华为学生的一种精神,而传统的教学方法使学生获得的道德认识却难以实现这一升华。因此,我们在思想道德教育中必须融入现代教育理念,让学生从自身实际出发,以兴趣为先导,以内需为动力,以实践为载体,积极倡导自主学习、合作学习与探究学习。使学生的主体性得到充分的发挥,让学生在主动思考、写作探索、亲身经历中自主地去发掘,自主地去构建科学的道德认知,为自身思想道德素质的全面提高创设扎实的基础。

简介：ThemagneticfusionreactorusingtheadvancedD-3Hefuelshastheadvantageofmuchless-neutronproductionssothattheconsequentdamagestothefirstwallarelessserious.Iftheestablishmentofthiskindofreactorbecomesrealistic,theexplorationof3Heonthemoonwillbelargelymotivated.Basedonrecentprogressesinthesphericaltorus(ST)research,wehavephysicallydesignedaD-3HefusionreactorusingtheextrapolatedresultsfromtheSTexperimentsandalsothepresent-daytokamakscaling.Itisfoundthatthereactorsizesignificantlydependsonthewallreflectioncoefficientofthesynchrotronradiationandoftheimpuritycontaminations.ThesecondaryreactionbetweenD-DthatpromptlyleadstotheD-Treactionproducing14MeVneutronsisalsoestimated.ComparisonofthisD-3HeSTreactorwiththeD-Treactorismade.

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简介：Athreedimensionalsteady-statemagnetohydrodynamicmodelisdevelopedforthearcplasmainaDCsubmergedelectricarcfurnacefortheproductionoffusedMgO.Thearcisgeneratedinasmallsemi-enclosedspaceformedbythegraphiteelectrode,themoltenbathandunmeltedrawmaterials.Themodelisfirstusedtosolveasimilarprobleminasteelmakingfurnace,andthecalculatedresultsarefoundtobeingoodagreementwiththepublishedmeasurements.ThebehaviorofarcswithdifferentarclengthsisalsostudiedinthefurnaceforMgOproduction.Fromthedistributionofthearcpressureonthebathsurfaceitisshownthatthearcplasmaimpingementislargeenoughtocauseacrater-likedepressiononthesurfaceoftheMgObath.Thecirculationofthehightemperatureairundertheelectrodemayenhancethearcefficiency,especiallyforashorterarc.

简介：StableoperatingregionintheHL-1Mtokamakhasbeenextendedbymeansofwallconditioning,corefuellingandcurrentcontroltechniques.Themechanismsoftheextensionareanalyzedinthispaper.Lithiumizationdiminishestheimpuritiesandhydrogenrecyclingtothelowestlevel.Afterlithiumizationahighdensityupto7×1019m-3wasobtainedeasilybystronggaspuffingwithordinaryohmicdischargealone.MoreattractivelywefoundthatmetalLi-coatingexhibitedtheeffectsofwallstabilization.Thelowqalimitwithhigherdensitywasextendedbyafactorof1.5～2incomparisonwiththatforboronization,and1.2forsiliconization.Siliconizationnotonlyextendedstableoperatingregionsignificantlybyitself,butalsoprovidedagoodtargetplasmaforotherexperimentsofraisingdensitylimit.Corefuellingschemesarefavourableespeciallyforsiliconizedwallwithahigherlevelofmedium-Zimpurity(Z=14).Aftersiliconizationthemaximumdensitynearto1020m-3wasachievedbyacombinationofsupersonicmoleculebeaminjectionandmultipelletinjection.ThenewdefinedslopeofHugilllimitillustratingmoreclearlythesituationunderlowqaandhighnedischargeswascreatedtoindicatethenewregionextendedbycombiningIpramp-upwithcorefuelling.TheslopewithalargeMurakamicoefficientincreasedbyafactorof50～60%.

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简介：某制造厂在核级阀门返厂维修过程中出现核l级阀门锻件违规补焊事件,之后又在核级阀门制造过程中出现无损检验违规事件,两起事件造成核级阀门出现了质量隐患.该违规事件反映出制造厂质量保证体系运转存在严重问题,工程公司和业主监造不力.事件相关方应加强质量管理和过程控制,消除质量隐患,做好经验反馈,确保核设备质量.

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简介：给出了北京正负电子对撞机（BEPC）同步辐射新组装的3W1Wiggler束斑强度分布及光子束流的测量结果，并与理论计算作了比较，两者得出了一致的结果。

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