The STAR event plane detector

• DOI: 10.1016/j.nima.2020.163970
• Publication Date: 2020-04-18T02:03:05Z
• Authors: J. Adams; A. Ewigleben; S. Garrett; W. He; T. Huang; P.M. Jacobs; X. Ju; M.A. Lisa; M. Lomnitz; R. Pak; R. Reed; A. Schmah; P. Shanmuganathan; M. Shao; X. Sun; I. Upsal; G. Visser; J. Zhang
• Keywords: Physics - Instrumentation and Detectors; 0103 physical sciences; FOS: Physical sciences; Instrumentation and Detectors (physics.ins-det); Nuclear Experiment (nucl-ex); Nuclear Experiment; 01 natural sciences; 7. Clean energy

17 pages, 10 figures. Accepted for publication in Nucl. Instr. Meth. A<br/>The Event Plane Detector (EPD) is an upgrade detector to the STAR experiment at RHIC, designed to measure the pattern of forward-going charged particles emitted in a high-energy collision between heavy nuclei. It consists of two highly-segmented disks of 1.2-cm-thick scintillator embedded with wavelength-shifting fiber, coupled to silicon photomultipliers and custom electronics. We describe the general design of the device, its construction, and performance on the bench and in the experiment.<br/>