The Experiment

The collision of single lead-lead nuclei at LHC energies produces several tens of thousands of particles. The ALICE detectors are well-equipped to measure the basic information about the majority of these particles. ALICE records information on the number of particles as well as the type, mass, energy, and direction of each of the particles. To do so, many different subdetectors are used, each providing a separate piece of information. From this, we can infer the existence and properties of matter under the extreme conditions created during the collision.  ALICE also takes data with proton-proton, proton-lead, and collisions of other intermediate nuclei.