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Keywords: step position information
Forum: Event and Track Management
Re: None How to get Step-Position information ? (Asim)
Date: 29 Jun, 2007
From: michel maire <michel maire>

User Asim wrote:

>> Hi there,
>> I've simulated the following: A gun which sends protons through a
>> carbon-made collimator. (I want to send 10E11 p in and get about 10E8 p
>> out).
>> To count the protons which have passed through the collimator, it would
>> be fine to get position informations of the single steps between
>> PreStep- and PostStepPoint. Then I could define a layer behind my
>> collimator and every time a step crosses this layer, I might count this.
>> I don't want to simulate a sensitive detector, if it's not nessecary. In
>> the Geant4ApplicationBook i found:
>> "Information in G4Step includes: ... Increment of position and time
>> between PreStepPoint and PostStepPoint"
>> Does anybody know how I can get the data I need ?
>> Thanks; Asim.

 1- You may have a look to :
   or TestEm3 as well

 2- the Geant4 FAQ :

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