Event Characterization Detectors

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Name	Role
Beam-Beam Counters	Measures collision location and centrality. Starts the stopwatch for an event.
Zero Degree Calorimeters and Shower Max Detectors	Measures collision location and centrality.
Forward Calorimeters	For d+Au collisions, it measures surviving neutrons and protons from the original deuteron.
Multiplicity Vertex Detector	Measures collision location and charged particle distributions.
Reaction Plane Detector	Accurately measures the reaction plane of each collision.

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