Re: [fluka-discuss]: FLUGDEM problem

From: <>
Date: Wed, 20 Oct 2021 18:37:51 +0200

Dear Alessandro

Fudgem is not that critical and it cannot be, when set to 1, the reason why
your run does not produce any result.

Fudgem=1 is a safe choice unless you set a production threshold for
secondary electrons well below 10 keV.

The reason why your input does not produce results when you set Fudgem=1
must be looked at elsewhere.Please send your input file, or check
in the output what is suspicious.


> Dear FLUKA experts,
> I am running some simulations for test with a photon beam of 2 GeV
> colliding witha huge lead target. I put the following EM-CUT for the
> secondary productions:
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....
> EMFCUT        -1E-05      1E-5       0.0    VACUUM _at_LASTMAT         
> But i think that I am making some mistakes. Beacause is I set FUDGEM=0
> it told me "STOP INVALID EMFCUT/PROD-CUT WHAT(3)" and the run with
> errors. Instead, if I set FUDGEM=1 no beam particles is generated and
> the results are all equal zero. If I switch off the EMFCUT card the
> simulation run without any problemas with the default options.
> So, what are the default options? What is the correct value for FUDGEM?
> Best regards and thank you for your time, Alessandro Calamida.
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Received on Wed Oct 20 2021 - 20:13:16 CEST

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