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CSNScryogenicsystemInstituteofHighEnergyPhysicsGuopingWang(wanggp@)30November2022CSNScryogenicsystemInstituteContentsIntroductionofCSNScryogenicsystemEngineeringprogressofCSNScryogenicsystemSummaryContentsIntroductionofCSNSc3CSNSOverviewCSNSisdesignedtoaccelerateprotonbeampulsesto1.6GeVkineticenergyat25Hzrepetitionrate,strikingasolidmetaltargettoproducespallationneutrons.Theacceleratorisdesignedtodeliverabeampowerof100kW.Aerial

photo,2015-11-173CSNSOverviewCSNSisdesigned4RequirementsofCSNScryogenicsystemCSNScryogenicsystemprovideshydrogentokeepthetwomoderatorsat20K.Dynamicheatload:DM:400W(25%margin)CM:300W(25%margin)4RequirementsofCSNScryogeniCSNS

cryogenicsystemMissionofCSNScryogenicsystem:Provide20K

cryogenichydrogentomoderator;Temperaturedifferenceislowerthan3Kbetweentheentranceandexitofhydrogenmoderator;Concentrationofpara-hydrogenishigherthan99%.Safety,reliable,andstableoperationofcryogenicsystem.CSNScryogenicsystemMissionoLayoutofCSNScryogenicsystemCompressorroomGasroomHydrogenroomRefrigeratorroomTankareaTargetstationHydrogencryogenictransferlinesLayoutofCSNScryogenicsysteCSNS

cryogenicsystemFlowchartofCSNScryogenicsystemCSNScryogenicsystemFlowchartHeliumrefrigerator,2200W@20K,purchasedfromLinde,hasarrivedatCSNScite.AcceptancetestwillbeperformedinJune2016.CompressorPurifier/AbsorberHeliumcoldboxandthecontrolcabinetHeliumrefrigerator,2200W@20Keyequipmentinhydrogenloop:TwohydrogencirculatorsOnehydrogen-heliumheatexchangerOnehydrogenheaterOneortho-parahydrogenconvertorOneaccumulatorAllequipmenthavebeenpurchasedordevelopedin2015.HydrogencirculatorHydrogen-heliumheatexchangerHydrogenheaterandO-PconvertorAccumulatorKeyequipmentinhydrogenloopHydrogencoldboxAccumulatorcoldboxCryogenichydrogensystemadoptedDoublecoldboxes:onehydrogencoldboxoneaccumulatorcoldboxInonecase,theaccumulatorbreaksout,itwillbemuchmoreconvenienttoremoveandreplace.HydrogencoldboxAccumulatorcCompleteassemblyofhydrogencoldboxandaccumulatorcoldboxin2015.HydrogencoldboxAccumulatorcoldboxCompleteassemblyofhydrogenEngineeringprogressHydraulictestofcryogenichydrogencirculatorTestedwith120KcryogenicnitrogengasDesignparametersValueWorkingpressure1.5MPaInlettemperature20KFlowrate1l/sPressurehead0.1MPaEngineeringprogressHydraulicCoolingtestofhydrogencoldboxFillingliquidnitrogeninthehelium-side,anduseheliuminsteadofhydrogeninthehydrogenloop.Within2hours,maximumtemperatureinhydrogencoldboxcooleddownto90K.CooldownprocessMan-machineinterfaceCoolingtestofhydrogencoldCoolingtestofaccumulatorcoldboxFillingliquidnitrogeninthehydrogen-side,andsimulatethepressurefluctuationbyheliumgas.Connectheliumgascylindersinthehelium-side,toprovidestablebackpressure(1.5MPa).CoolingtestofaccumulatorcoCryogenictransferlines1.Twodouble-channelcryogenichydrogentransferlines,40metersperone.2.

Sixsingle-channelcryogenichydrogentransferlines3.Twosingle-channelcryogenicheliumtransferlinesLayoutofcryogenictransferlinesSectionalviewofdouble-channelcryogenictransferlinesCryogenictransferlines1.TwoCryogenictransferlines1.Completedprefabricatesectionsofcryogenictransferlines.2.

Installed12mverticalpartinJanuary2016.InterfaceofcryogenictransferlinesbetweencryogenicsystemandmoderatorVerticalpartofcryogenictransferlinesCryogenictransferlines1.ComSummaryAcceptancetestofheliumrefrigeratorinJune2016.Commissioningofcryogenicsystemintheendof2016.

Jointcommissioningwithmoderatorsystem.ThisyearManufacturedhydrogencoldboxandaccumulatorcoldbox.Successfultestedhydrogencoldboxandtheaccumulatorcoldboxwithliquidnitrogen.

Finishedstructuraldesignandprefabricatedsectionsofcryogenictransfer.PresentSummaryAcceptancetestofhelThankyou！Thankyou！CSNScryogenicsystemInstituteofHighEnergyPhysicsGuopingWang(wanggp@)30November2022CSNScryogenicsystemInstituteContentsIntroductionofCSNScryogenicsystemEngineeringprogressofCSNScryogenicsystemSummaryContentsIntroductionofCSNSc21CSNSOverviewCSNSisdesignedtoaccelerateprotonbeampulsesto1.6GeVkineticenergyat25Hzrepetitionrate,strikingasolidmetaltargettoproducespallationneutrons.Theacceleratorisdesignedtodeliverabeampowerof100kW.Aerial

photo,2015-11-173CSNSOverviewCSNSisdesigned22RequirementsofCSNScryogenicsystemCSNScryogenicsystemprovideshydrogentokeepthetwomoderatorsat20K.Dynamicheatload:DM:400W(25%margin)CM:300W(25%margin)4RequirementsofCSNScryogeniCSNS

cryogenicsystemMissionofCSNScryogenicsystem:Provide20K

cryogenichydrogentomoderator;Temperaturedifferenceislowerthan3Kbetweentheentranceandexitofhydrogenmoderator;Concentrationofpara-hydrogenishigherthan99%.Safety,reliable,andstableoperationofcryogenicsystem.CSNScryogenicsystemMissionoLayoutofCSNScryogenicsystemCompressorroomGasroomHydrogenroomRefrigeratorroomTankareaTargetstationHydrogencryogenictransferlinesLayoutofCSNScryogenicsysteCSNS

cryogenicsystemFlowchartofCSNScryogenicsystemCSNScryogenicsystemFlowchartHeliumrefrigerator,2200W@20K,purchasedfromLinde,hasarrivedatCSNScite.AcceptancetestwillbeperformedinJune2016.CompressorPurifier/AbsorberHeliumcoldboxandthecontrolcabinetHeliumrefrigerator,2200W@20Keyequipmentinhydrogenloop:TwohydrogencirculatorsOnehydrogen-heliumheatexchangerOnehydrogenheaterOneortho-parahydrogenconvertorOneaccumulatorAllequipmenthavebeenpurchasedordevelopedin2015.HydrogencirculatorHydrogen-heliumheatexchangerHydrogenheaterandO-PconvertorAccumulatorKeyequipmentinhydrogenloopHydrogencoldboxAccumulatorcoldboxCryogenichydrogensystemadoptedDoublecoldboxes:onehydrogencoldboxoneaccumulatorcoldboxInonecase,theaccumulatorbreaksout,itwillbemuchmoreconvenienttoremoveandreplace.HydrogencoldboxAccumulatorcCompleteassemblyofhydrogencoldboxandaccumulatorcoldboxin2015.HydrogencoldboxAccumulatorcoldboxCompleteassemblyofhydrogenEngineeringprogressHydraulictestofcryogenichydrogencirculatorTestedwith120KcryogenicnitrogengasDesignparametersValueWorkingpressure1.5MPaInlettemperature20KFlowrate1l/sPressurehead0.1MPaEngineeringprogressHydraulicCoolingtestofhydrogencoldboxFillingliquidnitrogeninthehelium-side,anduseheliuminsteadofhydrogeninthehydrogenloop.Within2hours,maximumtemperatureinhydrogencoldboxcooleddownto90K.CooldownprocessMan-machineinterfaceCoolingtestofhydrogencoldCoolingtestofaccumulatorcoldboxFillingliquidnitrogeninthehydrogen-side,andsimulatethepressurefluctuationbyheliumgas.Connectheliumgascylindersinthehelium-side,toprovidestablebackpressure(1.5MPa).CoolingtestofaccumulatorcoCryogenictransferlines1.Twodouble-channelcryogenichydrogentransferlines,40metersperone.2.

Sixsingle-channelcryogenichydrogentransferlines3.Twosingle-channelcryogenicheliumtransferlinesLayout

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