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Forum: Event and Track Management
Re: None Cutoff of number of events using PYTHIA event generator (Stephanie Hickford)
Date: 23 Jan, 2008
From: Makoto Asai <Makoto Asai>

Hi,

 There is no such limitation except an intrinsic limits of an integer
variable. I would suggest you to set /event/verbose to 1 to see
how many events are actually executed. Also, you may want to
set some other verbosity for the last event to see if the event
actually gets finished.

Makoto

> -----Original Message-----
> From: Stephanie Hickford [mailto:svh13@student.canterbury.ac.nz] 
> Sent: Wednesday, January 23, 2008 2:43 PM
> To: publichypernews
> Subject: Cutoff of number of events using PYTHIA event generator
> 
> *** Discussion title: Event and Track Management
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/eventtrackmanage/747"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hi,
> 
> I am using novice exampleN04 to simulate production of muons. 
> I am using
> PYTHIA as my event generator and have .data files with 10,000 
> events. I
> have a macro called run.mac in which I have the command 
> run/beamOn xxx.
> I have set this event number to 10, 100, 500 and 1,000 but GEANT does
> not appear to execute the correct number of events. For example, I get
> the follwing number of muons for each number of events:
> 
> 10 events : 4,622 muons
> 
> 100 events : 28,284 muons
> 
> 500 events : 95,690 muons
> 
> 1,000 events : 95,690 muons
> 
> It appears to me that GEANT is probably doing somewhere 
> between 100 and
> 500 events and then just stopping (with no error message). My question
> is : is there somewhere in GEANT that limits the number of events that
> can be processed in this way?
> 
> Thanks, Stephanie
> 

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