[Gate-users] Maximum Particle Number

[Russ, Tom]

Dear Dimitris,

thank you very much for your help!
Unfortunately, I think this might not be possible in my case.
I want to simulate CT projections and use a general particle source (GPS) where I directly have to give it the number of primaries.
Besides I also think I cannot substitute the GPS with an activity source because I am using Gatelab, which (as I understood it) necessitates the use of the command 'setTotalNumberOfPrimaries'.

Best regards,
Tom

-----Ursprüngliche Nachricht-----
Von: Dimitrios Thanasas <dthanas at uoa.gr> 
Gesendet: Mittwoch, 29. Januar 2020 14:21
An: Russ, Tom <Tom.Russ at medma.uni-heidelberg.de>
Cc: gate-users at lists.opengatecollaboration.org
Betreff: Re: [Gate-users] Maximum Particle Number

Dear Tom,

I had this problem too. I solved it by combining time and source activity.
If you want 3600000000 particles you can use 100 ΜΒq activity for 36 seconds (or any other combination).
Comment the line (you don't need it):
#/gate/application/setTotalNumberOfPrimaries 3600000000 to run the simulation.

Best Regards,
Dimitris

> Dear Gate-Community,
>
> Gate seems to have a problem with primary particle numbers over 
> exactly
> 2.147.483.648 (2^(32)/2) and simply throws an error ('Exiting with 
> return value 6') and stops simulating for me.
> Can this be due to Gate having problems with numbers outside the 
> 32bit-variable range?
> Did anybody else encounter this?
> This is how my code looks:
>
> '/gate/application/setTotalNumberOfPrimaries 3600000000 
> /gate/application/setTimeSlice 1 s /gate/application/setTimeStart 0 s 
> /gate/application/setTimeStop 90 s'
>
> I use this acquisition timing due to the rotation of a voxelized phantom.
>
> Any help will be much appreciated! :)
>
> Best regards,
> Tom
>
>
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