中国与RHIC-STAR的国际合作

2005/6/28-29第59届东方论坛，上海中国与RHIC-STAR的国际合作马余刚，陈宏芳，程建平中国RHIC-STAR合作组：中国科大，清华大学，上海应物所，华中师大，高能所，近物所2005/6/28-292005/6/28-29第59届东方论坛，上海outlineChineseRHIC-STARGroupTOFrandPhysicsResultsImpactofChineseRHIC-STARGroupPhysicswithFullTOFProjectConclusion2005/6/28-29第59届东方论坛，上海ChineseRHIC-STARGroup--Historyandpresentorganization2005/6/28-29第59届东方论坛，上海US-ChinaCollaborationonSTAR/RHICASTAR-Chinacollaborationhasbeenestablished(SixInstitutionsfromChina)UniversityofScienceandTechnologyofChina,Hefei(USTC)TsinghuaUniversityShanghaiInstituteofAppliedPhysics(SINAP)CentralChinaNormalUniversity,Wuhan(CCNU)InstituteofModernPhysics,Lanzhou(IMP)InstituteofHighEnergyPhysics,Beijing(IHEP)Chinesecollaboratorsareplayingamajorroleinphysicsanalysesinvolvingopencharm,Cronineffect,andellipticflowaspartofSTAR’sfocusonstudiesofanewstateofmatter(thequark-gluonplasma)atRHICChinesegroupsareleadinginprototypinganddevelopmentforalarge-areaMRPCtime-of-flightdetectorforSTAR.ThisisthefirstmajorUS-Chinacollaborationonhighenergynuclearphysicsandwehavehadaverysuccessfulbeginning.TheSTAR-ChinaTime-of-FlightConstructionProjecthasbeencoveredundertheUS-PRCHEPAgreementsince2001toensuresmoothconstructionoftheTOFdetectorandoperationoftheSTAR-Chinacollaboration.2005/6/28-29第59届东方论坛，上海MajorMilestonesofSTAR-ChinaTOFProjectCCNUandIHEPjoinedSTARcollaborationin1999forTOFp;SINAP,USTC,TsinghuaandIMPjoinedSTARcollaborationinOct.2001.USTCteambeganMRPCR&DinAug.2000withthesupportsofNSFC,STARandotherChinesecollaborationinstitutions.JoinedinUS/PRCCooperativeAgreementonHighEnergyPhysicssince2001(22ndMeeting)PrototypeMRPC(multi-gapresistiveplate)time-of-flightdetectors,producedjointlybetweenUSTCandRiceUniv.andoperatedsuccessfullyinSTAR(2002-3and2003-4RHICruns).Physicsresultsonidentifiedparticlespectraandonsemi-leptoniccharmdecayshavebeenpublished.ApprovalofRHIC-STARPhysicsandtheConstructionofBarrelSTAR-TOF”bytheNationalNaturalScienceFoundationofChina(Sept10,2004,Budget:1.5MUSD)ApprovaloftheSTARTOFupgradeproposalbyBNLTechnicalAdvisoryCommitteeandSubmissionoftheProposaltoDOE(July2004)TechnicalReviewofproposalbyDOE,plannedAug.2005SupposeDOEapprovalinOct.2005,fullconstructionstartOctober20052005/6/28-29第59届东方论坛，上海MRPCTOFBarrelR&DRUN2002-3:TOFinstalledinSTAR24MRPCmodulesproducedatUniversityofScienceTechnologyChina6-channelfront-endcards,withamplifiersanddiscriminators,CAMACread-outRun2003-4:TOFinstalledinSTAR5newmodulesfromUSTCand5fromTsinghuaUniversity,Tsinghuadevelopedautomatedtechniquesformanufacturing24-channelfront-endcardswithamplifieranddiscriminatorRUN2004-5,TOFinstalledinSTAR,16newmodulesfromTsinghuaFirsttimeuseoffullon-boardread-outelectronics:digitizationofdataon-boardFirstuseofALICEPCI-PCbasedDAQ20022004G.Eppleyetal.2005/6/28-29第59届东方论坛，上海CompletedPrototype28moduleMRPCTOFTrayinstalledinSTAROct.‘02inplaceofexistingcentraltriggerbarreltrayNeighborCTBTrayEMCRailsFEEMRPCdesigndevelopedatCERN,builtinUSTC/ChinaPrototypeTrayConstructionatRiceUniversity28MRPCDetectors;24madeatUSTCTheSTARBarrelTOFMRPCPrototype70ps,2meterpathStrongteamincluding6ChineseInstitutionsinplace2005/6/28-29第59届东方论坛，上海batchproduction40MRPCproduction，morethan80％ofeligiblerate,goodperformanceinon-linetestingatRHIC-STAR(Tsinghua)2005/6/28-29第59届东方论坛，上海ProjectLeader:Yu-GangMa(SINAP)DeputyLeaders:HongfangChen(USTC)Jian-PingCheng(Tsinghua)Liaisonperson:HuanzhongHuang(UCLA)Studiesofthestronginteractionmatterathightemperature/densityandsearchingforQGP(Yu-GangMa,SINAP)(SINAP,CCNU,USTC,Tsinghuaetc.)focusonthecollectivedynamicsofrareparticles,heavyquarkproduction,hadronicevolutiondynamicsandsearchformulti-quarkstateparticlesDesignandMassproductionofMRPCmodulesforSTAR-TOF(Jian-PingCheng,Tsinghua)(Tsinghua,USTC)3840MRPCfor120tray,additional6tray(70%Tsinghua/30%USTC)QualitycontrolandcalibrationforSTAR－TOF(Xiao-LianWang,USTC)(USTC,Tsinghua)ChineseProposaltoNSFC2005/6/28-29第59届东方论坛，上海TheProposalofRHIC-STARFullTOFConstructionProposedmajorconstructionresponsibilities:ChineseSTARGroups:MRPCProductionandQualityAssurance–NSFC/CAS/MoST(ApprovedinSept,2004)(SpecialthanksforHuanzhong,Nu,Zhangbu,Xinnianetal.formanyimportantsuggestionsandhelps)USSTARGroups:ElectronicsandIntegrationetc–DOEProjectManager:G.Eppley(withDOE)MonetaryContributions:China~US$2.5M(US$1.5MfromNSFC/CAS/MoST)US-DOE~US$4.5M2005/6/28-29第59届东方论坛，上海STARTOFrandPhysicsResultsTOFprototype:1/120coverageofBarrelSTAR2005/6/28-29第59届东方论坛，上海PIDTPCalonePIDrange:pi/k~0.6GeV/c,(pi,k)/p~1.5GeV/c;TOF“alone”PIDrange:pi/k~1.6GeV/c,(pi,k)/p~3.0GeV/cm2m2TOF=110pskpTPCaloneTOF“alone”2005/6/28-29第59届东方论坛，上海PreliminarypionspectratillhighpTTPC:Pion:0-~0.6GeV/cKaon:0.2-~0.6GeV/cProton:0.2-~1GeV/cTOF:Pion:0.2-~1.6GeV/cKaon:0.2-~1.6GeV/cProton:0.2-~3GeV/cTPC+TOF:Pion:0.-~10GeV/cKaon:0.2-~3GeV/cProton:0.2-~5GeV/cTPC+TOF:2005/6/28-29第59届东方论坛，上海2005/6/28-29第59届东方论坛，上海ElectronidentificationCombinedwithTOF，electronscanbeseparatedfrompionscleanlyElectornsmixedwithpionsifonlydE/dxofTPCisusedtoidentifyparticlesX.Dong,Z.B.Xu,LJRuan,JWuetalLe