[Gate-users] max number of particles problem

[Dimitrios Thanasas]

Hi Gary,

Thanks for your answer. I thought to run multiple simulations using
different seed (and different engine generators probably) and I think I
will do it finally. The only disadvantage is that I use dose actors and I
want the output deposited energy to have small uncertainty. So I have to
study how to calculate the final uncertainty from each one uncertainty of
each simulation.

Best wishes,
Dimitris

Dimitrios Thanasas, PhD
Medical Physicist
Medical Physics Lab
Medical School
University of Athens


>
>
> Hi Dimitrios,
> I believe the limit is caused by the use of INT variable type in Geant4
> for the number of particles. 
>  
> You can just run a similar second simulation but ensure to set a different
> random seed.
>  
> http://lists.opengatecollaboration.org/pipermail/gate-users/2007-June/001906.html
>  
> Best wishes,
> Gary
> --
> Dr Gary Smith
> Research Associate
> JCMB Room 3406
> Particle Physics Experiment
> University of Edinburgh
> +44 (0)131 650 5311 Quoting Dimitrios Thanasas <dthanas at uoa.gr> on Fri, 13
> Sep 2019 14:49:09 +0300:
>
>> Hi everyone,
>>
>> I noticed that the simulation doesn't proceed when I use more than 2E+9
>> particles. Does anyone know how I can use more than 2 billion particles?
>> I found the command "/gate/output/ascii(binary)/setOutFileSizeLimit" at
>> the User's Guide but it doesn't work.
>> Moreover I don't want ascii files as I use dose actors for dose
>> calculations and I want many particles to reduce the dose uncertainty.
>>
>> Thanks in advance,
>> Dimitris Thanasas
>>
>>
>>
>>
>>
>> _______________________________________________
>> Gate-users mailing list
>> Gate-users at lists.opengatecollaboration.org
>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>
>
> --
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.