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

From: Ševčik Aleksandras <>
Date: Mon, 3 Sep 2018 12:50:14 +0000

Dear Mikhail,

Thank you very much and sorry for such question-mistake – I was sure it was a vacuum, not AIR…almost like a typo, haven’t noticed this somehow.


From: <> On Behalf Of Mikhail Polkovnikov <?????? ???????????>
Sent: Monday, September 3, 2018 10:59
Subject: Re: [fluka-discuss]: source.f generated spectra deviates

On 01.09.2018 12:31, Ševčik Aleksandras wrote:

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 ?


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 - 16:11:29 CEST

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