|Message: Re: Replica and energy density deposition||Not Logged In (login)|
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On Tue, 07 Jul 2009 10:02:26 GMT, Olivier Dadoun wrote:
> Hello, > > I am studying the energy density deposition (unit in MeV/mm3) inside a Target of Tungsten. > To do so I have segmented my target in N_Cell_z*N_Cell_x*N_Cell_y which are my elementary volumes (using Replica Volume). > I retrieved the cell hits using > G4int NrX = aStep->GetPreStepPoint()->GetTouchable()->GetReplicaNumber(1); > G4int NrY = aStep->GetPreStepPoint()->GetTouchable()->GetReplicaNumber(2); > G4int NrZ = aStep->GetPreStepPoint()->GetTouchable()->GetReplicaNumber(0); > and the cumulated deposited energy is > depESum[NrZ][NrX][NrY] += aStep->GetTotalEnergyDeposit(); > > Finally I fill a 3D histo using ROOT. > > I am interested in the Peak Energy Density Deposition, i.e the maximum > value of depESum divided by the volume of the elementary cell volume. > > My problem is that this number is strongly dependant of the number of > Cells I chose. Do you have any idea of what I am doing wrong? > > In advance thank you Olivier >
Shower shape must not depend too much of cell's granularity ... - what amount of variation are you speaking about ? - what is typical size of the cells ? - what is the incident energy ?
We have test-examples to study shower shape (al least in 1 dimension). Try to reproduce your results with TestEm2 or TestEm11 (in examples/extended/electromagnetic)
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