Dear Faith,
You mention first dispersion and then divergence. As you are sampling the energy from a predefined distribution I assume you mean the beam divergence (i.e. angular spread) and not dispersion?
If you are using your own source routine, you indeed have to implement your own divergence sampling (as it is written in the manual - see description of WHAT(3) the BEAM card). You can however access the divergence specified on the BEAM card inside the BEAMCM common and then use it for the sampling. See also following recent discussion on the FLUKA list, which includes also some code snippets how to do such a sampling:
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/8325.html
Cheers, Anton
________________________________
From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of f.h.green_at_surrey.ac.uk [f.h.green_at_surrey.ac.uk]
Sent: 07 October 2015 15:54
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: source.f
Hi everyone,
I am using a modified source.f file and a .dat file to use my own energy spectrum. What i have just realised is that the beam has very little dispersion and I was wondering if I can alter this? (In the BEAM card there is a setting for divergence type but i guess this gets over written by the source card)
I have attached my modified source.f file for your reference.
Thanks,
Faith
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Received on Wed Oct 07 2015 - 19:08:10 CEST