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Forum: Biasing and Scoring
Re: Question Difference between "GetLocalTime" and "GetProperTime" (Kyuwon Jung)
Date: Dec 03, 02:17
From: michel maire <michel maire>

On Mon, 03 Dec 2018 01:01:44 GMT, Kyuwon Jung wrote:
> Dear All experts,
> 
> Hello experts. I am trying to get a time of a track of protons, so I put
> the following code
> 
> >> G4double LocaTime = aStep->GetTrack()->GetLocalTime();
> >> G4cout << "LocalTime:" << LocalTime/second << G4endl;
> >>
> >> G4double ProperTime = aStep->GetTrack()->GetProperTime();
> >> G4cout << "ProperTime:" << ProperTime/second << G4endl;
> 
> But I have no idea what is a difference between "Local Time" and "Proper
> Time".
> 
> Could anyone teach me what the difference is?
> 
> Thank you,
> 
> Kyuwon Jung.
> 

 LocalTime is the time of life of a particle since its creation, expressed in the laboratory frame.
 ProperTime is the same thing, expressed in the at rest frame of that particle.

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