The experiment Alice(means a test of the large ion is) one of the six detector main Collider hadronic in CERN. Five others are :Atlas, wire tube compact ., the totem, etc. the year of the CD, and El a friend C F. Alice for encounters ions, heavy like the core of the lead is designed. That energy encounters 2.76 volts per (proton or neutron). This covers the necessary temperature for the production of plasma, quark gluon, to prepare. A state in which the quark and gluon separated, and a substance like liquid they produce.