Hello
The 1Dmax chooses for each z interval the cell in R with the maximum
value of the scored quantity (or vice-versa, if the projection is done
along R)
The 1D projection for each z interval AVERAGES all the cells in R.
Either over the whole mesh, or in a selected interval if the user sets
limits on the coordinates in the plot page.
Thus, I would expect the 1Dmax to be higher than the 1dprojection.
Which value to use depends on what you need.. if you need a global
quantity or an estimate in the most affected point.
Beware, both of them depend on how you set the USRBIN mesh with respect
to the size of the beam and of the subsequent particle shower.
If you need only a global value over your target, you can set a USRBIN
with only one interval for each of the coordinates. Or average over the
1Dprojection values of your present binning
Regards
Paola
On 6/2/21 9:13 AM, Tshepo Mahafa wrote:
>
> Dear Fluka Experts,
>
> I have a copper disc of dimensions, 1.5 mm radius and 5 mm thickness
> that I want to know what would be the damage effect of neutrons on it.
>
> So I simulated with FLUKA the dpa using USRBIN DPA-SCO. I simulated
> the coper disc being bombarded by three neutron energies, 1 keV, 1MeV,
> and 10 MeV so as to compare them.
>
> This were done on separate input files, but I have the input file of
> one attached.
>
> I have three questions that relates to this, and I’ll appreciate it if
> you could help me understand the results.
>
> Questions:
>
> 1.Can you please check if my input file is correct and I did not miss
> anything concerning estimating dpa
>
> 2.I plotted the dpa results using 1D Max and 1D Projection in USRBIN.
> The results are different. The 1D Max results are larger than that of
> the 1D Projection. What result should I use
>
> for dpa between the two.
>
> 3.Generally, dpa results are given as one value like for example, 2
> dpa. So how do I get to this one value that describes the dpa the
> whole material experienced.
>
> That is all from me. Thanking you in advance for your help.
>
> Regards
>
> Tshepo
>
> Tshepo Mahafa
>
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Received on Thu Jun 17 2021 - 18:51:20 CEST