Very long run time while working with OPTIPHOT

Running and Runtime Errors
1

Dear Fluka experts,

It takes hours and even days while working with scintillators at more 10 runs, even 10 primaries take around 45 mins. I am trying to build a multi-layer scintillator experiment and geometry is not that complicated either. Is my code not optimized?

Also, receiving relatively long run times with simple shielding calculations at 1000+ runs. 1000 primaries take between 10-15 mins. I am running Fluka ver. 4-3.1.

titaopti1.flair (3.5 KB)
titaopti1.inp (2.0 KB)
shielding.flair (4.1 KB)

Thank you.

Ozgur Hanci

4

Dear @ozgur.hanci ,

The most likely explanation is you have photons trapped in a “locked” mode meaning they bounce forever in your optical material. This usually happens when you have two corners facing each other which are made up of 3 faces at right angles. To provide an escape path to these trapped photons, simply increase the absorption of your optical materials by a small amount.