Global Observables for Pb+Pb Collisions from the ATLAS Experiment

Global properties of heavy ion collisions at LHC, will provide insight into dynamics of the hot and dense medium formed at collision energies thirty times larger than energy available at RHIC. In addition to the jet studies, the ATLAS detector at LHC has a great potential to probe global observables like charged particle pseudo-rapidity densities, elliptic flow or total transverse energy production as a function of collision centrality and within almost a full solid angle. We report on the detector capabilities to measure the global observables in Pb+Pb collisions at the center of mass energy of 5.5 TeV/n. The focus of this talk will be on the importance of these measurements in the context of RHIC results.