Re: [fluka-discuss]: Accessing electromagnetic photons

From: Andrea Fontana <>
Date: Wed, 5 Jul 2017 09:45:01 +0200

Dear Sourav,
    without seeing your input file, I can only guess:

- is the option PAIRBREM used correctly (see in particular Note 2 in the
- did you check in USDRAW for ICODE=105 or ICODE=208 (manual 13.2.13)?

If you send your input file, I can try to help you.
Kind regards,

Il 05/07/2017 07:18, Sourav Sarkar ha scritto:
> Dear FLUKA users,
> I am pretty new to FLUKA package which I am using to simulate high
> energy hadronic and electromagnetic showers with user cut-off
> (PART-THR and EMFCUT). At the end of shower, I require to have all the
> final particles through mgdraw. However I noticed that the photons
> which are generated in electromagnetic part of the shower
> (bremsstrahlung radiation) and fall below EMFCUT are not accounted in
> ENDRAW entry.
> P.S. particles below threshold energy are not ranged out as my cut-off
> is fairly high.
> I am not sure about the reason, which might be one of the following:
> 1. Are electrons and positrons assumed to have continuous energy
> deposition (due to radiation) during transport, so that the secondary
> photon is not accounted?
> 2. The photons which are below the threshold energy might not be
> pushed back to main stack from EMFSTK. I get the final electrons and
> positrons in ENDRAW with ICODE=22, so I am assuming they are pushed to
> main stack from EMFSTK through TRACKER.
> Please let me know what would be possible reason for missing the
> photons in my standard collision tape and what is the best solution
> for accessing them.
> Thank you.
> Regards,
> Sourav Sarkar

Dr. Andrea Fontana                    tel: +39 0382 987991
Istituto Nazionale                    fax: +39 0382 423241
di Fisica Nucleare
Sezione di Pavia                      e-mail:
Via Bassi 6                           web   :
27100 PAVIA, Italy
You can manage unsubscription from this mailing list at
Received on Wed Jul 05 2017 - 10:57:18 CEST

This archive was generated by hypermail 2.3.0 : Wed Jul 05 2017 - 10:57:25 CEST