FLUKA for fast timing method

Dear FLUKA experts,

I would like to simulate a fast timing setup consisting of LaBr3(Ce) scintillators, as shown in the figure. My purpose is to measure life times of some nuclear excited states (more generally B(E2) systematics) using coincidence, which are usually in the order of ps. So far I have learned about how to use voxels to record the energy deposited with the help of EVENTBIN and then use Birks factor to count the number of photons. My question is that is this achiaveable with FLUKA? How can one obtain excited state life times with FLUKA? How should I modify the mdraw.f and would it be more feasible to use GEANT4 instead?

Image source :Fast Timing with LaBr3(Ce) Scintillators
and the
Mirror Symmetric Centroid Difference Method, Jean-Marc R´egis

Thanks already!

Dear Egemen,
thanks for the question, I will have a look into it and I will come back to you as soon as I can.

Cheers,
Giuseppe

Thank you. I would like to add a few things. To find life times, it seems prompt curve and delayed curve determination is crucial. I believe for this purpose I have to know the time stamps of each event, and then by using appropriate time bins I can save the number of events corresponding to each time stamp. How can one achieve this?