Predictions in $^{238}$U + $^{238}$U collisions at RHIC

Planed $^{238}$U + $^{238}$U collisions at RHIC (2012) would provide opportunities to answer several open questions at RHIC. For example, the ratio of elliptic flow $v_2$ to the initial spatial anisotropy $\varepsilon$ as a function of transverse number density would indicate to the extent which the system approaches the ideal hydrodynamical limit. The saturation of $v_2/\varepsilon$ could indicate that the system reaches local thermal equilibrium. Until now, there were no hint of saturation even at most central $^{197}$Au + $^{197}$Au collisions at top RHIC energy. Due to the larger size and the deformation of Uranium, the $^{238}$U + $^{238}$U collisions could reach higher densities than that achieved in $^{197}$Au + $^{197}$Au collisions at the same energy. In this talk, we present the predictions of various observables in $^{238}$U + $^{238}$U collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV at RHIC. We discuss our Glauber Monte Carlo model to extrapolate the observables from $^{197}$Au + $^{197}$Au to $^{238}$U + $^{238}$U collisions at top RHIC energy and show the results as a function of centrality.