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Question Problem with G4PSCellFlux  

Forum: Biasing and Scoring
Date: 31 Mar, 2015
From: Simon Nicolas <Simon Nicolas>

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?

Thanks,

Best regards,

Simon

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1 None: Re: Problem with G4PSCellFlux   (Tsukasa Aso - 31 Mar, 2015)
1 Question: Re: Problem with G4PSCellFlux   (Simon Nicolas - 02 Apr, 2015)
(_ None: Re: Problem with G4PSCellFlux   (Tsukasa Aso - 03 Apr, 2015)
(_ None: Re: Problem with G4PSCellFlux   (Simon Nicolas - 03 Apr, 2015)
2 None: Re: Problem with G4PSCellFlux   (michel maire - 03 Apr, 2015)
1 None: Re: Problem with G4PSCellFlux   (Simon Nicolas - 03 Apr, 2015)
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