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Question Change particle momentum and position 

Keywords: track step change direction momentum position
Forum: Event and Track Management
Date: 22 May, 2006
From: Frederik Wauters <Frederik Wauters>


I want to change the direction of an e- comming from a Beta-decay. The plan is to redefine the particles momentum after the first step an to put it back where ik came from. This all in steppingaction.

I tried: theStep->GetPost(or Pre)StepPoint()->SetMomentumDirection(G4ThreeVector(1,0,0)); theStep->GetPost(or Pre)StepPoint()->SetPosition(initialPosition); This is just ignored.

I also tried theStep->GetTrack()->SetMomentumDirection(G4ThreeVector(1,0,0)); theStep->GetTrack()->SetPosition(initialPosition); Then the position and momentum of the particle changes, but i get warnings that the information is not reliable anymore.

Am i doing this in the wrong way or do is just have to add something else?

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1 None: Re: Change particle momentum and position   (Makoto Asai - 22 May, 2006)
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