Maybe it is good idea that Fluka can use ACE-formatted files

Physics, Transport and Magnetic Fields
1

The ACE-formatted files for Point-wise thermal neutron scattering laws S(a,b,T) can be used in Fluka 4.4.0, maybe it is a good idea that all ACE-formatted files can be used in Fluka, not only for neutron incidence, but also for other particles.

3

I’m not sure which other files you exactly refer to, but for other particles FLUKA relies by design on its own models.