The LHCf is intended to measure the energy and numbers of neutral pions (π) produced by the collider. This will hopefully help explain the origin of ultra-high-energy cosmic rays (UHECRs). Detecting UHECRs is performed through observations of secondary particle showers produced when a UHECR interacts with the atmosphere. The LHCf experiment is designed to measure the very-forward region, where most of the energy flow of secondary particles is contained.