Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (2): 25 doi: 10.1007/s41365-016-0177-4

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Alignment calibration and performance study of the STAR PXL detector

Long Ma 1,2,Xin Dong 3,Hao Qiu 4,Spiros Margetis 5,Yu-Gang Ma 1,6   

  1. 1.Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai,China
    2.University of Chinese Academy of Sciences,Beijing,China
    3.Nuclear Science Division,Lawrence Berkeley National Laboratory,Berkeley,USA
    4.Purdue University,West Lafayette,USA
    5.Kent State University,Kent,USA
    6.ShanghaiTech University,Shanghai,China
  • Contact: Yu-Gang Ma E-mail:ygma@sinap.ac.cn
  • Supported by:

    This work was supported in part by the National Natural Science Foundation of China (No. 11421505) and the Major State Basic Research Development Program in China (No. 2014CB845400).

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Long Ma, Xin Dong, Hao Qiu, Spiros Margetis, Yu-Gang Ma. Alignment calibration and performance study of the STAR PXL detector.Nuclear Science and Techniques, 2017, 28(2): 25     doi: 10.1007/s41365-016-0177-4

Abstract:

We report in this paper the alignment calibration of the STAR pixel detector (PXL) prototype for the RHIC 2013 run and performance study of the full PXL detector installed and commissioned in the RHIC 2014 run. PXL detector is the innermost two silicon layers of the STAR heavy flavor tracker aiming at high-precision reconstruction of secondary decay vertex of heavy flavor particles. To achieve the physics goals, the calibration work was done on the detector with high precision. A histogram-based method was successfully applied for the alignment calibration, and the detector efficiency after alignment was studied using both p+p collision data and cosmic ray data.

Key words: Alignment calibration, Heavy flavor tracker, STAR