[Gate-users] AlongStep/PostStep processes

[Sofiia]

Dear Prof. Dr. Uwe Pietrzyk,

Thank you very much for your reply!

I use GATE version 8.0.

I am trying to repeat the simulation from the article (pdf in the
attachment) *Brunner S.E., et al. 2014, **Studies on the Cherenkov effect
for improved time resolution of TOF-PET.*
That is why I would like to calculate amount of Cherenkov photons created
in crystal 3x3x3 mm^3.
Does Cut 10 mm work for such small crystal?

With best regards,
Sofiia Forostenko

пт, 9 нояб. 2018 г. в 12:45, Uwe.Pietrzyk <Uwe.Pietrzyk at web.de>:

> Hello Sofiia Forostenko,
>
> could you let us know, which version of GATE you are using,
> since it is easier then for our developers and users to help you.
>
> I remember, that I had to set the cuts like shown below
> in physics.mac in order to find useful results for Cherenkov radiation.
>
> #
> #       C U T S
> #
>
> /gate/physics/displayCuts
> /gate/physics/Gamma/SetCutInRegion      world 10 mm
> /gate/physics/Electron/SetCutInRegion   world 10 mm
> /gate/physics/Positron/SetCutInRegion   world 10 mm
> /gate/physics/Proton/SetCutInRegion     world 10 mm
>
> I hope this is helpful!
>
> Kind regards and best wishes,
>
> Uwe Pietrzyk
>
> ---------------------------------------
> Prof. Dr. Uwe Pietrzyk
> Diplom-Physiker
> Am Anger 18
> 50374 Erftstadt
> Tel: +49-2235-922038
> Fax: +49-2235-922039
> Mobil: +49-172-213-2155
> eMail: Uwe.Pietrzyk at web.de
> ---------------------------------------
>
> On 9. Nov 2018, at 12:07, Sofiia <s.i.forostenko at gmail.com> wrote:
>
> Dear GATE users,
>
> I am working currently on simple simulation of crystal to determine the
> mean amount of Cherenkov produced per photoelectric interaction.
> I found that the amount of Cherenkov from GATE I obtained is much less
> than calculated one from the formula.
> So I decided to switch to Geant4. I've obtained from Geant4 simulation
> reasonable amount (compatible with formula) of Cherenkov while electron
> multiple scattering and electron ionisation processes were "ON" only for
> PostStep option, but "OFF" for AlongStep.
>
> Could someone give me please tips on how to implement these options in my
> GATE simulation?
>
> With best regards,
> Sofiia Forostenko
>
>
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>
>
>
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