Re: How to know about the energy of parent particles?

Dear Hantao
In FLUKA this possibility exists, although it's something that is surely
an advanced topic. It requires to make use of user routines, and in
particular
of mgdraw, struprf, stupre and the common TRACKR, at least.
It is not soemthing easy to explain by email.
In any case, as a first step you have to study very carefully
the section 13.2.13 of fluka2011 manual (mgdraw.f general event interface)
and 13.2.20 as well: (stupre.f and struprf.f)

Furthermore you can also look in the Discussion what Alberto Fasso' wrote
about this in
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/1606.html
(notice the mention of LDECAY logical flag!)

The use of these routines allows to record properties of particles' parents.

        Best regards
                Giuseppe Battistoni

On 02/09/2011 17:00, Hantao Jing wrote:
> Dear FLUKA experts,
> I want to calculated the surface muons from a carbon target.
> The surface muons decay from rest pions.
> By examining the energy of pions, I can obtain the surface muon
> precisely. How to know
> about the energy of parent pions before it decay?
> Thank you in advance!
>

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