|Message: Problem with G4PSCellFlux||Not Logged In (login)|
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Hi, I use G4PSCellFlux (with neutrons filter) in my simulation to calculate the neutron flux in a cylinder. I have used B4d example to recover the hit collection (G4THitsMap) and I obtain the sum with a GetSum() function in my EventAction class. I compare this result with MCNP (F4:n Talli wich uses TrackLength estimator with a SD card) but there is a 40% difference between the two results.
However when I calculate the G4 flux with this formula: Flux = StepLengthSum / CellVolume
(I sum the StepLength in my SteppingActionClass) I obtain exactly the same result as MCNP calculation (result normalized for one neutron source). Do you already have a problem with G4PSCellFlux? I also tried to use G4PSFlatSurfaceFlux but it doesnít work. I donít understand why I donít find the same result with G4PSCellFlux. Do you have any idea?
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