|Message: how can I get the first point of the interaction, that is not necessary the ParentID||Not Logged In (login)|
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Dear all, How can I get the first point of the interaction, that is not always the same the PartentID, for example: A neutrino pion generate a muon, thi muon generate a electron, (each generation in different space points) and finally, the electron interact with my main detector. And I would like obtain the first interaction, the pion-interaction. Thanks.
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