The STAR Event Plane Detector
Joseph Adams, Annika Ewigleben, Sierra Garrett, Wanbing He, Te-Chuan, Huang, Peter M. Jacobs, Xinyue Ju, Michael A. Lisa, Michael Lomnitz, Robert, Pak, Rosi Reed, Alexander Schmah, Prashanth Shanmuganathan, Ming Shao, Xu, Sun, Isaac Upsal, Gerard Visser, Jinlong Zhang
TL;DR
The STAR Event Plane Detector (EPD) is a newly developed, highly-segmented scintillator-based detector designed to measure forward-going charged particles in heavy-ion collisions at RHIC, enhancing the experiment's capabilities.
Contribution
This paper introduces the design, construction, and performance evaluation of the novel EPD upgrade for the STAR experiment at RHIC.
Findings
Successful bench testing and in-experiment performance demonstration
Enhanced measurement of forward particle emission patterns
Improved data quality for event plane determination
Abstract
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.
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