D3-Sensitivity_Field 英文文献资料

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1、DetectorDescription:SensitiveDetector&Fieldhttp://cern.ch/geant4PARTIII-Sensitivedetectors-Primitivescorers-Hits&digits-Read-outgeometryAlogicalvolumebecomessensitiveifithasapointertoaconcreteclassderivedfromG4VSensitiveDetectorAsensitivedetectoreitherc

2、onstructsoneormorehitobjectsoraccumulatesvaluestoexistinghitsusinginformationgiveninaG4StepobjectNOTE:youmustgetthevolumeinformationfromthe“PreStepPoint”DetectorDescription:SensitiveDetector&Field-Geant4Course3AG4VSensitiveDetectorobjectshouldbeassignedt

3、oG4LogicalVolumeIncaseasteptakesplaceinalogicalvolumethathasaSensitiveDetectorobject,theSensitiveDetectorisinvokedwiththecurrentG4Stepobject.Eitherimplementdedicatedsensitivedetectorclasses,orusepredefinedscorersSteppingPhysicsParticleStepTrackLogical

4、SensitiveManagerProcessChangeVolumeDetectorGetPhysicalInteractionLengthSelectShortestDoItFillUpdateUpdateIsSensitiveGenerateHitsDetectorDescription:SensitiveDetector&Field-Geant4Course4Tracklength•G4PSTrackLength,G4PSPassageTrackLengthDepositedenergy•G

5、4PSEnergyDepsit,G4PSDoseDeposit,G4PSChargeDepositCurrent/Flux•G4PSFlatSurfaceCurrent,G4PSSphereSurfaceCurrent,G4PSPassageCurrent,G4PSFlatSurfaceFlux,G4PSCellFlux,G4PSPassageCellFluxOthers:G4PSMinKinEAtGeneration,G4PSNofSecondary,G4PSNofStep,…angleL:Total

6、steplengthinthecell.V:VolumeDetectorDescription:SensitiveDetector&Field-Geant4Course5SensitivedetectorPrimitivescorerUsermustimplementhis/herownManypredefinedscorersaredetectorandhitclassesprovidedinGeant4.OnecanaddhisOnehitclasscancontainmanyownquantit

7、ies.AhitcanbemadeforEachscoreraccumulatesaquantityeachindividualstep,oraccumulateforeacheventquantitiesG4MultiFunctionalDetectorBasicallyonehitscollectionismadecreatesmanycollections(maps),peronedetectori.e.onecollectionperonescorerHitscollectionisrela

8、tivelycompactKeysofmapsareredundantforscorersofsamevolumeDetectorDescription:SensitiveDetector&Field-Geant4Course6Each“LogicalVolume”canhaveapointertoasensitivedetectorHitisasnapshotofthephysicalinteractio