Date: Fri, 4 Oct 2019 21:01:47 +0000
Hi Philippe
Just two observations after a quick look: you DISCARD photons while you seem to be interested in them?
Furthermore, there is a typo in the source routine
RADUIS = 15
should probably be "RADIUS"
Please correct the two and let us know if questions remain
Cheers
Stefan
From: owner-fluka-discuss_at_mi.infn.it <owner-fluka-discuss_at_mi.infn.it> On Behalf Of Philippe Bertreix
Sent: 04 October 2019 16:11
To: 'fluka-discuss_at_fluka.org' <fluka-discuss_at_fluka.org>
Subject: [fluka-discuss]: Source routine
Dear FLUKA Experts,
I need to simulate the external dose due to a radioactive gas in a room. I have created a geometry made by a room filled with air, and an ICRU sphere at the center. This sphere will allow to estimate the E+/E- fluence after 0.007cm of skin.
To do that I created a source routine to sample the position the isotropic beam in my room (and outside the ICRU sphere). Note that I will not simulate a radionuclide, but a discrete emission of energy.
I succeeded to compile my source routine and I made a test to check if everything works fine : I started a first simulation of 10000 particles with a USRBIN score of photons in the air. The problem is the results of the USRBIN is 0 (which is not normal I think), and the simulation to very fast (some seconds).
I have two questions :
1) If I choose WHAT(3) = 10000 (= isotropic) in the beam card, do I have to define an isotropy in my source routine ? (I made it by calling RACO(TXX,TYY,TZZ) and by associating the results to TXFLK (NPFLK), TYFLK (NPFLK), TZFLK (NPFLK) )
2) I had a look on the .out file and the . err file :
- on the .err file, it seems my 10000 particles have been generated
- but at the end of the .out file, it seems only 1 seed has been generated, and it stops after.
Why this difference?
I have attached to this email the .inp, the source routine, and also the .err, .out and .log files.
Thanks a lot for your help,
Best regards
Philippe BERTREIX
CERN - European Organization for Nuclear Research
Radiation Protection Group
Radioactive Shipping Service
[CERN-logo]
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