The past month of November, during the second run of the LHC, there were registered for the first time ion collisions occuring at an energy higher than 13TeV. The first measurements were done with lead ions the 17th of November, and were declared to be stable the 25th of the same month. The four major experiments at LHC will take data in this new energy range, and for the fisrt time the LHCb will do it too. The lead ion collisions performed at very high energies will enable scientists to study the characteristics of matter in the state it had just after the Big Bang.