Heavy-Ion Group

Heavy Ion Group in CMS prepares the experiment to conduct research in the field of relativistic heavy ion physics. We intend to use this high resolution, large acceptance apparatus to study hot nuclear matter at the highest energies. The multi-purpose CMS detector will be handling large numbers of particles emerging from the collisions of Lead Ions at center of mass energy of 5500 GeV per nucleon pair.

Hits in CMS Silicon tracker and ECAL created by particles produced in central Pb+Pb collision at 5.5 TeV/nucleon. There are about 52000 particles both charged and neutral that are streaming into the detector (corresponding to charged particle pseudorapidity density of of about 5000). The response to particles generated by HIJING was simulated using OSCAR detector simulation program and displayed with Iguana. Note that the structure of the silicon tracker is clearly visible.