Frontiers in Physics (Mar 2022)

Time Resolution of the 4H-SiC PIN Detector

  • Tao Yang,
  • Tao Yang,
  • Yuhang Tan,
  • Yuhang Tan,
  • Qing Liu,
  • Suyu Xiao,
  • Suyu Xiao,
  • Suyu Xiao,
  • Kai Liu,
  • Jianyong Zhang,
  • Ryuta Kiuchi,
  • Mei Zhao,
  • Xiyuan Zhang,
  • Congcong Wang,
  • Boyue Wu,
  • Jianing Lin,
  • Weimin Song,
  • Hai Lu,
  • Xin Shi

DOI
https://doi.org/10.3389/fphy.2022.718071
Journal volume & issue
Vol. 10

Abstract

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We address the determination of the time resolution for the 100 μm 4H-SiC PIN detectors fabricated by Nanjing University (NJU). The time response to β particles from a 90Sr source is investigated for the detection of the minimum ionizing particles (MIPs). We study the influence of different reverse voltages, which correspond to different carrier velocities and device sizes, and how this correlates with the detector capacitance. We determine a time resolution (94 ± 1) ps for a 100 μm 4H-SiC PIN detector. A fast simulation software, termed RASER (RAdiation SEmiconductoR), is developed and validated by comparing the waveform obtained from simulated and measured data. The simulated time resolution is (73 ± 1) ps after considering the intrinsic leading contributions of the detector to time resolution.

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