Retrieve position at a given time

Particles, Track, Event, Run and Biasing
1

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_Geant4 Version:_geant4-11.1.2
_Operating System:_linux
_Compiler/Version:_gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
_CMake Version:_cmake version 3.22.1

Hi,

I would like to know if it is possible to have a particle’s position at a given time; I am able to have the position, momentum, energy, etc., for every pre- and post-step. However, the time interval is not constant. I mean, I have the position but at different intervals of time for different particles.
I would like to use this information to animate the process, but not inside Geant 4.

Thank you.

Ildefonso.

2

Right. The step-by-step information is not uniform in time, because Geant4 isn’t a “time based” simulation, it’s “interaction based.” However, I think that if you store “rich trajectories” then you get additional information, including intermediate points interpolated for you between steps.