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Question Extracting event history after tracking 

Forum: Event and Track Management
Date: 15 Aug, 2013
From: Marek Szuba <Marek Szuba>

Hello,

I am quite certain this is a pretty common scenario, as however I have not found too many examples or discussions pertaining to it (and what I have found addressed only parts of my problem) I am asking my question here: what would be the best way of, having finished processing of an event in Geant, extracting information about production, interaction and decays of particles which took place during processing? Specifically, what I need in my output is:
 - vertices: position, time, process, links of some sort to parent and daughter particles;
 - particles: ID, initial momentum, links of some sort to the start vertex, the stop vertex and all intermediate (elastic) vertices.

I also have to be able to follow conversion of primary particles to tracks (so that I know at the end which particles to append to my original event and which ones I've already got) as well as to maintain links between hits and tracks, however I am pretty sure I know how to implement these.

Thank you in advance for your advice! If you want to know more, let me know

-- MS

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