Dear Paolo
I had the chance of using few times the latching mechanism
that you refer, inheriting in stupre.f the particles from the em tracking.
However I must say that I never copied the parent properties in SPAUSR and ISPUSR
within the USDRAW entry as you say. I used to copy them within STUPRF and STUPRE.
In order to clarify what you are trying to do, could you please send us your routines?
This would allow us to check better what's happening.
Cheers
Giuseppe
On 12/4/13 8:40 AM, maestro wrote:
> Dear FLUKA experts
> I would like to tag and write in a collision tape all the backscattered particles produced
> in e.m./hadronic showers generated by beam particles impinging a calorimeter.
> For each backscattered particle, I am interested in recording
> some properties of the parent (i.e.:ETRACK, JTRACK, LTRACK, etc.).
> To do that I have followed the procedure
> explained in this forum message "Particle latching using MGDRAW+STUPRE+STUPRF"
> (Alberto Fasso', 22/05/2008).
> In the USDRAW routine, I copied the parent properties
> in the SPAUSR and ISPUSR variables of TRACKR.
> That works well when USDRAW is called from Kascad and Kasneu, but
> it does not work when USDRAW is called from Emfsco.
> For instance, with an electron as beam particle, whenever a
> Moller scattering occurs, the secondary electron does not inherit the
> parent properties (i.e. all the SPAUSR/ISPUSR variables of TRACKR are zero but
> ISPUSR(11)). Instead in photonuclear interaction, the products
> correctly recall the parent properties.
> As far as I understood, the TRACKR user variables
> are copied by stuprf.f and stupre.f to the FLKSTK and EMFSTK particle stacks respectively,
> and then copied back to the TRACKR user variables when a secondary is downloaded from the stack to be transported.
> However in my simulation, I suspect this last step does not occur with EMFSTK.
> Why? Am I doing anything wrong ?
> Thank you
> Best regards
> Paolo Maestro
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Received on Fri Dec 20 2013 - 17:04:50 CET