A FOrward CALorimeter Upgrade For PHENIX

Over the past few years, the PHENIX detector has undergone several upgrades in the forward region (1<|eta|<4), initially covered only by the muon arms. The focus of these upgrades is toward a better understanding of the Color-Glass Condensate and the interplay between the different components of the proton's spin valence/sea quark and gluon contributions. This paper highlights the newly proposed forward calorimeter detector, FOCAL. FOCAL is a tungsten-silicon sampling calorimeter with high position and energy resolution, covering a pseudorapidity of 1.6<eta<2.5. This future detector aims to constrain the current view of gluon saturation at small x in the Color-Glass Condensate framework, through isolation of direct photons at high-p(T) over a broad range of pseudorapidity.