Abstract
The STAR endcap electromagnetic calorimeter will provide full azimuthal coverage for high- p T photons, electrons and electromagnetically decaying mesons over the pseudorapidity range 1.086⩽ η⩽2.00. It includes a scintillating-strip shower-maximum detector to provide π 0/γ discrimination and preshower and postshower layers to aid in distinguishing between electrons and charged hadrons. The triggering capabilities and coverage it offers are crucial for much of the spin physics program to be carried out in polarized proton–proton collisions.
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