[Gate-users] AlongStep/PostStep processes

[Uwe.Pietrzyk]

Hello Sofiia Forostenko,

despite the cuts have to be entered  in “mm”, they are actually
internally converted to “energy” inside the GEANT4-part.

Kind regards,

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 17:06, Sofiia <s.i.forostenko at gmail.com> wrote:
> 
> 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 <mailto: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 <mailto:Uwe.Pietrzyk at web.de>
> ---------------------------------------
> 
>> On 9. Nov 2018, at 12:07, Sofiia <s.i.forostenko at gmail.com <mailto: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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>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users <http://lists.opengatecollaboration.org/mailman/listinfo/gate-users>
> <Brunner_SCINT2013_arxiv.pdf>

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