A hadronic calorimeter is a type of particle detector used in high-energy physics experiments to measure the energy of hadrons, such as protons, neutrons, and pions, produced in particle collisions. These detectors are designed to absorb and measure the energy of these particles as they pass through the material of the calorimeter. Hadronic calorimeters often consist of layers of dense material, such as lead or steel, followed by layers of scintillating material that emit light when particles pass through them. The energy of the incoming particles is determined by measuring the amount of light produced in the scintillator layers. Hadronic calorimeters play a crucial role in the detection of particles in high-energy physics experiments, helping scientists study the properties of particles and interactions at the subatomic level. They are an essential component of particle detectors in experiments at facilities such as the Large Hadron Collider (LHC) at CERN.