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Characterization of CdTe x-ray sensor layer on Medipix detector chips

机译:Medipix检测器芯片上CdTe X射线传感器层的表征

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摘要

We have been characterizing various sensor layers bump-bonded to Medipix detector chips. We report here characterization of a cadmium telluride (CdTe)-Medipix2 assembly. CdTe is expected to be a useful sensor layer for clinical CT imaging detectors because of its good detection efficiency for x-rays in the energy range up to 120 keV. However, an understanding of the detection characteristics of these sensor layers is vital to high-quality imaging. We present leakage current variations with temperature and sensitivity inhomogeneity across the detector. This is an extension of the tests previously reported in Aamir et al [1].
机译:我们已经表征了凹凸结合到Medipix检测器芯片上的各种传感器层。我们在这里报告碲化镉(CdTe)-Medipix2组件的表征。 CdTe有望成为临床CT成像检测器的有用传感器层,因为它对能量高达120 keV的X射线具有良好的检测效率。但是,了解这些传感器层的检测特性对于高质量成像至关重要。我们介绍了整个检测器中泄漏电流随温度和灵敏度不均匀性的变化。这是先前在Aamir等人[1]中报告的测试的扩展。

著录项

  • 来源
  • 会议地点 Wellington(NZ);Wellington(NZ)
  • 作者单位

    Department of Physics Astronomy, University of Canterbury, Christchurch, N.Z.;

    University of Otago Christchurch, N.Z.;

    Department of Physics Astronomy, University of Canterbury, Christchurch, N.Z.,MacDiarmid Institute for Advanced Materials Nanotechnology, University of Canterbury, Christchurch, N.Z.;

    Department of Physics Astronomy, University of Canterbury, Christchurch, N.Z.;

    Department of Physics Astronomy, University of Canterbury, Christchurch, N.Z.;

    HIT Lab NZ, University of Canterbury, Christchurch, N.Z.;

    Department of Physics Astronomy, University of Canterbury, Christchurch, N.Z.,European Centre for Nuclear Research (CERN), Geneva, Switzerland;

    University of Otago Christchurch, N.Z.,European Centre for Nuclear Research (CERN), Geneva, Switzerland,Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, N.Z.;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料一般性问题;
  • 关键词

    medipix; x-ray detectors; MARS-CT; compound semiconductors; cadmium telluride; gold nano-particles; sensitivity variations;

    机译:medipix; X射线探测器;火星计算机断层扫描复合半导体碲化镉金纳米颗粒;灵敏度变化;

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