20 SiPM

[giacomoortona]

It looks like there are always 20 sipm, regardless of the number of fibers.
I should have a check. Probably here:
https://github.com/govoni/muon/blob/master/src/MUON_DetectorConstruction.cc#L633
(this is just a reminder for me, I will try fix it in the next few days)

[govoni]

This is unexpected, since the fibres placing is done in a loop (https://github.com/govoni/muon/blob/master/src/MUON_DetectorConstruction.cc#L633) where each single element is an entire column made of fibre + 2 SiPMs at its edges.

[giacomoortona]

Indeed in the visualisation I can see the small yellow dot on top (and bottom) of each fiber. But then I don't understand why I always have only 20 entries in the output root file for the sipm energies?

[govoni]

No idea, in the sense that I did not work on the output part for our simulation. If I recall correctly, they were built starting from sensitive detectors, which I removed since their setup was cumbersome to me, with the idea of doing it "by hand", i.e. determining myself how much energy gets deposited in each detector volume. By the way, I think that this would be the starting point anyhow, to cross-check the effect of doping materials, densities, etc. on the muon dE/dx and to evaluate the efficiency of light collection at each step (passage into fibre, propagation, light detection).