Getting a lis output file for neutron flux (neutron/cm^2 s) from target

Hi experts,

I am not seasoned in FLUKA. I have a simple geometry where a target is hit by a proton beam and I would like to score (write to a .lis file) the neutron flux within the target. Any suggestions how to do that as for a beginner?

Thanks!

Use the USRTRACK card to get the neutron energy spectrum inside your target region.