How to use weightwindow

Hi everyone!
Im a new to OpenMC,I am using OpenMC to calculate the signal received by the out-of-core detector, which is a deep penetration problem, but the detector does not respond, so I check the user manual and find that I need to use the weightwindow module, but I do not understand some parameters in this module, can you explain it to me
1.lower_ww_bounds
2.energy_bins
3.upper_bounds_ration
Can someone answer my question? Thank you very much