The STAR MAPS-based PiXeL detector
Giacomo Contin, Leo Greiner, Joachim Schambach, Michal Szelezniak,, Eric Anderssen, Jacque Bell, Mario Cepeda, Thomas Johnson, Hao Qiu,, Hans-Georg Ritter, Joseph Silber, Thorsten Stezelberger, Xiangming Sun, Co, Tran, Chinh Vu, Howard Wieman, Kenneth Wilson, Rhonda Witharm
TL;DR
The paper presents the design, construction, and performance of the PiXeL detector using MAPS technology in the STAR experiment at RHIC, highlighting its successful operation over three years.
Contribution
It introduces the first application of thin MAPS technology in a collider environment for a high-energy physics detector.
Findings
Detector performance exceeded design specifications
Successful operation over three years of data taking
Detailed description of sensors, electronics, and mechanical structure
Abstract
The PiXeL detector (PXL) for the Heavy Flavor Tracker (HFT) of the STAR experiment at RHIC is the first application of the state-of-the-art thin Monolithic Active Pixel Sensors (MAPS) technology in a collider environment. Custom built pixel sensors, their readout electronics and the detector mechanical structure are described in detail. Selected detector design aspects and production steps are presented. The detector operations during the three years of data taking (2014-2016) and the overall performance exceeding the design specifications are discussed in the conclusive sections of this paper.
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