J-PARC一般化ー分布研究....ppt

HighMomentumBeamlineatJ PARC Shin yaSawadaKEK HighEnergyAcceleratorResearchOrganization Japan IntroductionExamplesofExperimentsHighMassDimuon unpol HighMassDimuon pol Goto sanPhi Yokkaichisan BeamlineOverviewandR D SlowExtractionBeamline Phase1 NP HALL56m L 60m W 50 GeVPS T1Target30 Loss BeamDump750kW SwitchYard A Line T0Target0 5 Loss SplitPoint2 Loss Plantoextendthehalldownstream 50m inthePhase2 BeamlinesattheHadronHall WhatistheHighMomentumBeamline Primarybeams proton Phase1 polarizedprotonandheavyions future upto51GeV c Secondarybeams proton pion kaon etc TheradiationshieldingoftheSYtunnelisdesignedsothat2 15kW lossallowedatSM1 Exp setupcouldbestaged 120m HadronPhysics BeamsofnotonlylowmomentumK piareindispensabletostudyQCDissuesatJ PARC Drell Yan J Psiproduction structureatlargex p KscatteringHypernucleiformationviap Kbeams Vectormesonmodificationinmatter ChiralperturbationtheoryviaKdecays SpectroscopywithpandKbeams PhysicsPossibilitiesoftheHighMomentumBeamline HadronPhysics PhysicsofQCDTwoMajorQuestsofQCDquarkconfinementandchiralsymmetrybreakingSubjectsofHadronPhysics attackingthesequestsfromvariousaspectsofview atJ PARC Hadronspectroscopy spectroscopywithpi KMeson baryondynamics chiralperturbationviaKdecays QuarknuclearmatterNuclearforce pi Kscattering hypernuclearformationviapi KNucleonstructureExperimentstoexploremajorhadronphysicsquestsarepossibleatthehighmomentumbeamline vectormesonmodificationinmatter chiralsymmetryrestorationDrell YanandJ Psiproduction nucleonstructureatlargex ExamplesofExperiments HighMassDimuonMeasurement 1012 sprotonstalkbyGoto sanforthepol partVectorMesonModificationinNuclei 109 1010 sprotonstalkbyYokkaichi sanOtherPossibilitiesGPDwithpp ppiDelta talkbySudoh sanattheAutumnJPSmeeting J PARC 一般化 分布研究 可能性 軌道角運動量 VectormesoninsidenucleustalkbyOzawa sanHighmomentumkaon pion P04 MeasurementofHigh MassDimuonProductionatthe50 GeVProtonSynchrotron needs30and50GeV 1012protonspersec PhysicswithHigh MassDimuonsatJ PARC DimuonSpectrometerforFNALE605 772 789 866 p p d xat800GeV c Twocomponentsinthe spectrum a Continuum Drell Yanprocess b Vectormesons J FNALE866 QuarkEnergyLosswithD Yat50GeV Fractionalenergylossislargerat50GeV PossibletotestthepredictedL2 dependencefromtheA dependencemeasurement GarveyandPeng PRL90 2003 092302 IssuesraisedbyPAC RelationwithFermilabE906 50GeVprotonbeamisnotavailable ShojiNagamiyasaysthata50 GeVprotonmaybeavailablewithslowrampingevenwithoutaflying wheelgenerator accordingtoProf Yamazaki theleaderoftheJ PARCacceleratorgroup Whatisastage 1approval StatusofFermilabE906 ApprovedbyFermilabPACin2001ReviewedbyFermilabPACagaininOctober2006 andthePACagainendorsedE906AtechnicalreviewofE906washeldatArgonneNationalLabinDecember2006InJune2007 USDOE OfficeofNuclearPhysicsdecidedtofundE906ConstructionofthecoilsforanewmagnetConstruction refurbishingthehodoscopesandtrackingchambersConstructionandinstallationwillbecompletedbyFallof2009E906isscheduledtorunfortwoyearsin2009 2011Equipmentswouldbecomeavailableinlate2011 TheoreticalConsiderationbyYokoya san QCDcorrectiontotheDrell YanprocessatJ PARCenergy H Yokoya Niigata 第 回 J PARC 高 物理 月 日 KEK50GeV 低 Drell Yan過程 QCD 表 pQCD 予測 SummarybyYokoya san Drell YanprocessattheJ PARCenergy QCDcorrectionisveryimportant andhigher ordercorrectionsbeyondNLOmayberequired Resummationstudiestellus however pQCDcorrectioncanbecontrolledbysummingthelargelogterms Power correctionsmustbecomerelevant andneedsmorestudies UnpolarizedPDFs sea quark gluon isstillunknown andhavetobemeasuredattheJ PARCexperiments E16 ElectronpairspectrometertoexplorethechiralsymmetryinQCD stage 1approvedneed30GeV 109 1010protonspersec SeeYokkaichi stalk IntroductionExamplesofExperimentsHighMassDimuon unpol BeamlineOverviewandR D BeamLineConfiguration OpticsI SecondaryBeams Useathin 2 15kWloss targetatSM1CollectthematforwardanglesTransferthemfor 120mSchematicLayoutaroundSM1 ShieldingoftheswitchingyardhasbeendesignedtoaccommodatethelossatSM1 BeamLineConfiguration OpticsII BeamOptics apreliminarydesignhasbeenstudied Example 10GeV cparticlesBoreradiusofthequadrupolemagnetsis10cmorless 0 2msr canbeachieved YieldEstimation 30GeV 30GeVprotons 2 losscoppertarget Productionangleof4degreeand Dp p DW 0 2msr Evenwith30GeVprotons enoughintensitycanbeobtainedespeciallyforpions YieldEstimation 50GeV 50GeVprotons 2 losscoppertarget Productionangleof4degreeand Dp p DW 0 2msr Togetmoreintensityforhighermomentumbeams extractionatmoreforwardanglescanbeconsidered BeamLineConfiguration OpticsIII PrimaryBeams BeamlineconfigurationisalmostthesameasthecaseforthesecondarybeamsexceptforequipmentsatSM1 Inordertocutafraction 10to100ppm oftheprimarybeam abeamstealercanbeused 1014primaryprotons 109 1010protons Fieldfreehole BeamLineConfiguration OpticsIV Inordertogetafew oftheprimarybeam anelectrostaticseptumwillbeused 1014primaryprotons 1012protonsHighheatandradiationdeposithavetobetakenintoaccount MoreR Dworksshouldbenecessarytoestimatethebeamlossandtofinalizethedesign Inordertogetafractionoftheprimarybeam asystemwithabentcrystalwouldbeagoodcandidate R Dforabentcrystalsystem TestexperimentatKEK PS 12 GeVproton 1012 s 107 s Grant in AidforanextstepR Dofhigh mombeamlineisbeingapplied Bentcrystal ESS Cost Schedule MagnetsfromtheWorld Totalcostifconstructedfromscratch 5 8M Wehavenobudgetsofartoconstructahighmomentumbeamline Butwearedoingeveryefforttoconstructitwithassmallcostaspossible e g reuseofsecond handmagnets AlreadyfromSLAC Saclay CERN Largedipol