The KEK High Energy Accelerator Research Organization, located in Tsukuba, Japan, is a leading research institution focused on particle physics and accelerator science. Established in 2005, it combines several facilities, including the High Energy Accelerator Research Organization and the Japan Proton Accelerator Research Complex, to advance scientific knowledge through high-energy experiments. KEK conducts research on fundamental particles and their interactions, contributing to global scientific efforts in understanding the universe. The organization collaborates with international institutions and plays a significant role in projects like the Large Hadron Collider and various neutrino experiments, fostering innovation in accelerator technology and particle physics research.