Dear Roman,
the BEAM card is needed in order to set up the maximum energy of cross-section tabulations.
If not present the default value is 200 GeV/c, which is too low for cosmic ray study.
If a different particle is set as SDUM , the maximum energy will change accordingly.
Best regards, luigi
On 13 Jul 2016, at 07:34, Roman Savinov <rsavinov_at_calpoly.edu<mailto:rsavinov_at_calpoly.edu>> wrote:
Dear Fluka experts,
I always used the BEAM card together with SPECSOUR but I noticed that fluka runs even if the BEAM is disabled. The results however are bit different. The input example in the manual (16.4) uses BEAM with protons as a SDUM. I assume that since it uses the BEAM card with SDUM:proton while the GCR composition is 28 different ions types, than there is a good reason for that but why does it work without the BEAM?
Can you please explain:
1. whether/when the BEAM should be used with SPECSOUR
2. what SDUM in the BEAM card should be chosen in case multiple GCR ions are selected
Thank you,
Roman
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Received on Wed Jul 13 2016 - 21:19:43 CEST