Problem with Compound/Material card

From: Steyn, Ruan <> <>
Date: Mon, 20 Oct 2008 16:25:46 +0200 (CEST)

Hi Fluka users

Someone detected a problem with the attached files of the previous =
Thus I am sending the same message to you.


Previous e-mail:

Hi Fluka experts

My question is related to the MATERIAL/COMPOUND card.

In my example_mod.inp (attached) file - I made changes to the example
file (the one that comes with the fluka package).

The changes that I made was: Target from BERYLLIC to AIR.
Beam from a Proton to Neutron and inserted the DEFAULT card for NEUTRONS

Energy from 50GeV to 2 MeV

I then compared the output file (fort 47 - Flux) of these 2 cases

MATERIAL 4.0 9.0122 1.848 5.0 BERYLLIU
MATERIAL 0.001225 26.0 AIR
COMPOUND -0.0009256 7.0-0.0002837 8.0-0.0000157 18.AIR
ASSIGNMAT 26.0 regBE3 regBE4

I have attached the sum.lis file's for both these cases. For the first
case the name is beryllic_target_sum.lis and for the second one

As you will see the output file look very differnent, as should be
expected. But the strange thing is that in the case of the air target
(with_air_sum.lis )the detector detected the same flux for all the
differnent bins. Can someone please explain this to me? Is there maybe
something wrong with my MATERIAL/COMPOUND card?



Received on Mon Oct 20 2008 - 16:33:22 CEST

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