Optical Photon Processes in GEANT4 - Cern

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Boundary Process• Dielectric - DielectricDepending on the photon’s wave length,angle of incidence, (linear) polarization,and refractive index on both sides of theboundary:(a) total internal reflected(b) Fresnel refracted(c) Fresnel reflected• Dielectric - Metal(a) absorbed (detected)(b) reflected12
G4BoundaryProcessImplementation Details• A ‘discrete process’, called at the endof every step• never limits the step (done by thetransportation)• sets the ‘forced’ condition.• Logic such that:• preStepPoint: is still in the old volumepostStepPoint: is already in the new volumeso information is available from both13
Page 1 and 2: Cover SheetOptical Photon Processes
Page 3 and 4: Optical photon productionin Geant4i
Page 5 and 6: Cerenkov Process• Cerenkov light
Page 7 and 8: User Options• Suspend primary par
Page 9 and 10: in ExptPhysicsList:#include “G4Sc
Page 11: G4Absorption• Bulk Absorption -
Page 15 and 16: G4OpticalSurface• Set the simulat
Page 17 and 18: Surface effectsPOLISHED: In the cas
Page 19 and 20: Csl: Reflection prob. about the nor
Page 21 and 22: ExampleG4LogicalVolume * volume_log
Page 23 and 24: The logic in G4OpBoundaryProcess:Po
Page 25: ExampleN0625

Optical Photon Processes in GEANT4 - Cern

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