|Message: Re: Having two run managers co-existing for full-simulation and quick reconstruction||Not Logged In (login)|
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G4RunManagerKernel must be a singleton. Of course, since Geant4 is a toolkit, you can utilize pieces to build up your own application with two "run managers", but I'm not sure Geant4 as a whole works in this way. Actually, I don't see any particular reason to have two run managers in your case. 1) Given "optical photon" you want to trace separately is treated as a different kind of particle rather than gamma, and thus optical photon has its own process manager, you won't be bothered by other processes assigned to other particle types. Thus, you do not have to have two physics list. 2) With "fast simulation manager" you can alternate your geometry setup "on the fly". Thus, you can use a simplified geometry dedicated for optical photon. 3) You may want to utilise the stacking mechanism to suspend all the optical photon tracks until all other tracks has been traced.
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