Dear FLUKA experts,
I have a question related to the production of optical photons with the card “OPT-PROD”, with type “SCINTILL”. The number of optical photons produced is inferior to the one I would expect; I’ve attached an example simulation to better explain the problem I have.
The simulation is relative to a 100keV beam inside a scintillator material. The scintillator is big enough to guarantee that all the energy of the beam is deposited inside the material (I’ve checked through a USRBIN scoring card that this is indeed the case, and each beam photon deposits 100keV). For this example purpose, the scintillation light photon energy is set to 2eV, and the fraction of deposited energy that is converted to scintillation light is set to 0.20. Given these settings, I would expect a production of 100000*0.2/2 = 10000 optical photons per beam particle from the scintillation process. Instead, the number of optical photons produced per beam particle is only around 8200, as reported at line 1567 and 1578 of the .out file attached.
I’d appreciate if you could help me understand this discrepancy, and if there is a different way I could set up the simulation to fix it.
Thank you in advance,
Best regards,
Fabien
GADOX_optiphoton_test.flair (1.8 KB)
GADOX_optiphoton_test.inp (1.6 KB)
GADOX_optiphoton_test001.out (82.0 KB)