What is the universe made of? How did it start? This Manual tells the story of how physicists are seeking answers to these questions using the world's largest particle smasher - the Large Hadron Collider - at the CERN laboratory on the Franco-Swiss border. Beginning with the first tentative steps taken to build the machine, the digestible text, supported by color photographs of the hardware involved, along with annotated schematic diagrams of the physics experiments, covers the particle accelerator's greatest discoveries - from both the perspective of the writer and the scientists who work there. The Large Hadron Collider Owners' Workshop Manual is a full, comprehensive guide to the most famous, record-breaking physics experiment in the world, which continues to capture the public imagination as it provides new insight into the fundamental laws of nature.