Re: [fluka-discuss]: How to understand the results of USRBDX

From: Mikhail Polkovnikov <pmk_at_ihep.ru>
Date: Sun, 17 Dec 2017 21:48:49 +0300

On 15.12.2017 04:58, shihy_at_ihep.ac.cn wrote:
>
> Dear FLUKA experts,
>
> I'm using FLUKA to do some simulation. I set photons as the incident
> particle, and in the vacuum. The photons are pointing to hit a 6mm
> thick copper, and I set a USRBDX to record the photons from vacuum to
> copper and the electrons from copper back to vacuum(the same surface
> between vacuum and copper). But the results(sum.lis file) show that
> about 300 photons across from vacuum to copper when the incident
> particle was only one photon. I don't know the reason. Is the result
> correct? If so, how to understand that result? Or it's simply because
> FLUKA cannot distinguish the incident photon and secondary photon
> here?(The number of primaries is 1E8).
>
> Thanks for your help!
>
> Shy Shi
>
Dear Shy Shi,

You can use the BEAMPART for WHAT(2) of a USRBDX, that gives you the
incident photons only (primary particles). Did you use one way or  two
way scoring in the USRBDX to count number of particles from vacuum to
copper?


Best regards,

Mikhail




__________________________________________________________________________
You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
Received on Sun Dec 17 2017 - 21:12:32 CET

This archive was generated by hypermail 2.3.0 : Sun Dec 17 2017 - 21:12:36 CET