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Forum: Analysis
Re: Question Which Action should I take? (Huagang Yan)
Date: 21 Oct, 2016
From: michel maire <michel maire>

On Fri, 21 Oct 2016 03:47:50 GMT, Huagang Yan wrote:
> I want to know 1) the energy spectrum of secondary particles produced in
> a volume, 2) if they are not produced in the volume but enter the
> volume, the energy spectrum just before they enter the volume, i.e., the
> energy they carry into the volume.
> 
> I collected the information of 1) by using StackingAction just as in
> TestEm5. However, I am not sure if I should use TrackingAction or
> SteppingAction to get the information of 2). I wonder what the
> difference is.
> 
> Advice is greatly appreciated.
> 

  A trajectory is made of several steps. 
  In TrackingAction you have the control at beginnig of trajectory (e.g.when the particle borns) and at end of trajectory (e.g.when the particle ends).
  In SteppingAction you have the control at end of each step.

 Therefore, for 2), use SteppingAction.

 I add the text of a FAQ

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/10/21/04.34-42504-stepInfos.faq.txt

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