ATLAS is a large particle physics experiment located at the Large Hadron Collider (LHC) at CERN, near Geneva, Switzerland. It is designed to investigate a wide range of physics topics, including the search for the elusive Higgs boson and the study of dark matter. The ATLAS detector is one of the largest and most complex particle detectors ever built. It consists of multiple layers of technology that track and identify particles produced during high-energy collisions. By analyzing these collisions, scientists aim to deepen our understanding of the fundamental forces and particles that make up the universe.