Abstract
The PHENIX detector at RHIC has been designed to study hadronic and leptonic signatures of the Quark Gluon Plasma in heavy ion collisions and spin dependent structure functions in polarized proton collisions. The baseline detector measures muons in two muon spectrometers located forward and backward of mid‐rapidity, and measures hadrons, electrons, and photons in two central spectrometer arms. Further progress requires extending rapidity coverage for hadronic and electromagnetic signatures by upgrading the functionality of the PHENIX muon spectrometers with calorimeters to include photon and jet measurements. In this paper we present the basics of the calorimeter design and argue that combining highly segmented calorimeter with high resolution preshower and shower maximum detectors allows to resolve overlapping showers separated by ∼X0/4 and properly reconstruct effective masses even under constrains of extremely compact experiment.
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