|Message: Re: How to get Step-Position information ?||Not Logged In (login)|
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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 : examples/extended/electromagnetic/TestEm2/steppingAction.cc or TestEm3 as well
2- the Geant4 FAQ : http://geant4.web.cern.ch/geant4/support/faq.shtml#a-track
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