csnsstatus中国散裂中子源jieweiforthecsnsproject-slac

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1、TheAlignmentofDTLinCSNSInstituteofHighEnergyPhysics,CASKEZhiyong2014.10.14Outline1.GeneralLayoutofCSNS2.GeneralIntroductionofDTL3.AlignmentToleranceRequirementofDTL4.ProcedureofDTLAlignment5.AnalysisontheFinalPositionErrorofDTL散裂中子源进展汇报March20,2015Page21.General

2、LayoutofCSNSCSNSmainlyconsistsofanH-linacandaprotonrapidcyclingsynchrotron(RCS).Itisdesignedtoaccelerateprotonbeampulsesto1.6GeVkineticenergyat25Hzrepetitionrate,strikingasolidmetaltargettoproducespallationneutrons.散裂中子源进展汇报March20,2015Page32.GeneralIntroductio

3、nofDTLTheDTL(DriftTubeLinac)ispartofthelinacacceleratorwhichacceleratesH-ionfrom3MeVto80MeV.ItconsistsoffourindependentDTLtanks,andeachDTLtankismadeupofthreeDTmechanicalsections.Atotalof153drifttubeswillbeinstalledpreciselyintheDTLtank.DTLmechanicalsectionDiffe

4、rentkindsofdrifttubes散裂中子源进展汇报March20,2015Page43.AlignmentToleranceRequirementofDTLΔZ(mm)ΔX(mm)ΔY(mm)RMSLongitudinalTransverseoffsetVerticaloffsetoffsetDTLintheLinac0.050.050.10ThealignmentaccuracyofDTLis0.05mmbothinthetransverseandverticaldirection,and0.10mmin

5、thelongitudinaldirection.散裂中子源进展汇报March20,2015Page54.ProcedureofDTLAlignmentThealignmentofDTLisacomplicatedworkwhichconsistsoffivestepsasbelow.1.DTmechanicalsectionfiducialization2.Drifttubesfiducialization4.Drifttubeadjustment3.Drifttubeinstallation5.DTmechani

6、calsectioninstallation散裂中子源进展汇报March20,2015Page64.1DTmechanicalsectionfiducializationTheDTmechanicalsectionfiducializationistoestablishacoordinatesystemontheDTmechanicalsectionwhichprovidesthereferencetoinstallandpositionthedrifttubes.CoordinatesystemoftheDTme

7、chanicalsection:Origin:projectedpointofinternalcirclecenteronlow-energyendsurfaceZaxis:connectinglinefromorigintoprojectedpointofinternalcirclecenteronhigh-energyendsurfaceYaxis:lineperpendiculartothetopplaneHandedness:right散裂中子源进展汇报March20,2015Page7Thealignmen

8、tworkiscarriedoninthelaboratorywhichiskeptataconstanttemperatureandhumidityasthesameconditioninthelilactunnel.Bothonthelow-energyendandhigh-energyendarefixedfiverefl