Re: [fluka-discuss]: source.f generated spectra deviates

From: Mikhail Polkovnikov <>
Date: Mon, 3 Sep 2018 10:59:21 +0300

On 01.09.2018 12:31, Ševčik Aleksandras wrote:
> Hello,
> I want to implement a virtual accelerator concept which is a virtual
> source from which photon beams are emitted with photon fluence
> spectral distribution as that of a real accelerator. However, the
> spectra provided by source.f when scored with USRTRACK strangely
> deviates from the sample, see attached pictures. When I was doing the
> same with lesser energies up to 100 kev, no deviations were noticed.
> Could someone give any insights what is my error ?
> Regards
> Alex

Dear Alex,

What kind of deviation did you mean? USRTRACK in vacuum gives the same
sample as the file data. The sharp peak is a process of positron
annihilation in media.

Best regards,


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Received on Mon Sep 03 2018 - 11:27:05 CEST

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