Dear @dprelipc,
Thank you once again for your response. It seems the SPECT issue is now resolved.
For the CT component, just to confirm, if I am unable to determine the spectrum experimentally or from data sheets, I could use a tool such as SpekPy Web to generate the spectrum with specific energy bins and intensities, and then input the file into FLUKA similarly to the other question.
Since I am still working through a past beginner’s course material, I’ll need to learn more about implementing user routines before I can proceed with this. For that reason, I’d like to keep this topic open for now.
In any case, you were of so much help! Very much appreciate it!
Kind regards,
Samuel