when using USRTRACK for energy spectra you need to specify a specific region, however something you need to measure this as a function of some coordinate system for example in cylindrical coordinates as a function of R or phi, is there a way to achieve this?
I’m afraid, there is not builtin scoring in FLUKA, to get the energy spectra at different locations. You will need to slice your geometry into separate regions, and set up unique USRTRACK or USRBDX scorings.