Fluka settings

[grzanka]

Proper settings (beam source and physics settings) for converter:

• number of primaries
• deltae option is probably not supported by Fluka
• check whether scattering and nuclear reactions are supported
• check which Fluka physics settings should be presented in UI

See https://flukafiles.web.cern.ch/manual/chapters/description_input/description_options/defaults.html#defaults

[Bogdan2423]

• Number of primaries: not sure if I understand correctly, but I think we already parse number of primaries for Fluka? It's the START card
• I couldnt find anything similar to deltae option for Fluka
• Related to scattering I found this. So we can disable multiple scattering, enable single scattering and set threshold for scattering.
• Nuclear reactions: if I understand this correctly, there are some nuclear reactions in Fluka, but I dont think there is a way to disable them

As to physics settings for fluka, maybe it would make the most sense to allow to select which defaults to use from this list? We can also allow to change each option seperately, or just some of them (such as electromagnetic interactions, Rayleigh and Compton scattering, delta ray production etc.)

[grzanka]

Probably this is equivalent to DELTAE:
https://flukafiles.web.cern.ch/manual/chapters/description_input/description_options/flukafix.html#flukafix

[grzanka]

most probably "no scattering" means "WHAT(2) >= 3.0: Multiple scattering for * is completely suppressed."

[grzanka]

For a moment to get a MVP lets use only "physics settings". Other options like DELTAE or multiple scattering should be hidden in UI, but the values should go in the JSON to the backend (for future developments)

[grzanka]

On hold till the Fluka/SHIELDHIT12A switch is ready