[Gate-users] problem with scintillation photons

[Amir Beheshti]

Dear users
According to the problem with scintillation photons on optical simulation with vgate9.0 and the solution of it regarding the link below:http://lists.opengatecollaboration.org/pipermail/gate-users/2020-October/011977.htmlCould anyone help me how to downgrade the Geant4 in vGate9.0?
Thanks a lot
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