Re: [fluka-discuss]: Questions about fluka

From: silvia palomba <>
Date: Thu, 20 Feb 2020 17:46:41 +0100

Thanks for the answers but I still have a problem with diamond target
I entered a diamond material and LOW-MAT card, as you told me, I show it
in the attachment,
but the energy deposition of protons, scores through DETECT card,
for diamond target is equal at the energy deposition of the same protons
for carbon target.

What am I doing wrong?

Il giorno ven 14 feb 2020 alle ore 10:44 Paola Sala <>
ha scritto:

> Dear Silvia
> About the material definition: I suppose you wish to have the equivallent
> of natural carbon, only with increased density. Then in the MATERIAL card,
> so not fill the fields relative to Am nad A: fill only the z and the name,
> the code will automatically consider the correct isotopic composition for
> Carbon.
> Then, you will have to add a LOW-MAT card in order to associate your new
> material with the low-energy neutron cross section data set (there is the
> example in the manual, in the description for LOW-MAT)
> LOW-MAT DIAMOND 6. -2. 296. 0.0 0.
> About usrbin: the third quantity is the value that you plot, the fourth is
> the error in percentage
> The plotted value is energy/cm3/primary averaged over the third dimension
> You are asking for a bin size of 0.08 microns in z and 0.5 microns in x
> znd y. be aware that you are at the limit, or below, of the capabilitiees
> of the code, and IMPORTANT, that you will have toset very small values for
> the producton and transport thresholds in order to get something
> meaningful. Do you relly need such small bins?
> Also be aware that fluka will not deal with the crystal structure.
> Regards
> Paola
> > Dear experts,
> >
> > I'm a beginner with fluka. I have two questions:
> > - my target is made with diamond but I don't understand how set my
> > material
> > card in input. I wrote as All1 but it don't recognize this material.
> > - I don't understand what I obtain in a file ascii by setting userbin as
> > show you in All2. Because if I do a 2D plot in a file.dat i see 4
> columns,
> > the first two are the two coordinates, the third and the fourth I don't
> > understand what show me.
> >
> > Thanks in advance.
> > Regards,
> >
> > Silvia
> >
> Paola Sala
> INFN Milano
> tel. Milano +39-0250317374
> tel. CERN +41-227679148

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(image/png attachment: diamond_material.png)

Received on Thu Feb 20 2020 - 19:37:57 CET

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