|Message: Re: A Newbie's question: how is an event generated||Not Logged In (login)|
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Hi Huagang, Its not completely (and physically) same, when you send more than one primary particles at one event, all the primary particles uses same starting point. So, it means, for every "/run/beamOn" the number of generated primary particles shares same starting variables. If the radiation source area is a surface instead of a point (or if direction is changing for every event), it can effects your statistics. But of course, the selection of the method based on your project and computational power. The aim of generating more than one particles for every event is decreasing your computational effort a bit. I'm attaching two pictures from exampleB1, the first picture shows an event with 500 primary particles, and the second shows 500 events with 1 primary particles for per event. On 18-08-2016 22:11, Huagang Yan wrote: > *** Discussion title: Documentation and Examples > > Hi Tevfik, > > Thank you very much for your explanation. I still don't understand the > usefulness of event. > > Perhaps I should ask the following question: what is the difference > between a run that has 50 events each having only one primary track and > a run that has 1 event having 50 primary tracks? Are they physically the > same? > > Thanks a lot. > > ------------------------------------------------------------- > Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or unsubscribe) at: > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/docsexamples/647/1/1.html Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/08/18/16.07-33497-1event500particle.png Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/08/18/16.07-68506-500event500particle.png
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