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arXiv 1712.03369physics.ins-det
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GaAs:Cr基Timepix探测器的性质

Properties of GaAs:Cr-based Timepix detectors

P. Smolyanskiy, G. Chelkov, S. Kotov, U. Kruchonak, D. Kozhevnikov, S. Pospisil, I. Stekl, A. Zhemchugov

摘要:

由于单光子计数,混合像素探测器技术为X射线成像带来了高空间分辨率的低噪声水平。然而,硅作为最广泛的探测器材料对能量超过30 keV的光子略微敏感。这就是为什么近年来,砷化镓和碲化镉等硅的高Z替代品越来越引起社会对X射线成像系统发展的关注。在这项工作中,我们提出了我们的调查结果的Timepix探测器凸点键合由砷化镓补偿铬(GaAs:Cr)制成的传感器。从实际的角度来看,最重要的属性:IV特性,电荷传输特性,操作稳定性,均匀性,温度依赖性以及能量和空间分辨率被认为是。这些探测器的光谱X射线成像的适用性进行了讨论。

英文摘要:

It is the hybrid pixel detector technology which brought to the X-ray imaging a low noise level at a high spatial resolution, thanks to the single photon counting. However, silicon as the most widespread detector material is marginally sensitive to photons with energy more than 30 keV. That's why the high-Z alternatives to silicon such as gallium arsenide and cadmium telluride are increasingly attracting attention of the community for the development of X-ray imaging systems in recent years. We present in this work the results of our investigations of the Timepix detectors bump-bonded with sensors made of gallium arsenide compensated by chromium (GaAs:Cr). The properties which are mostly important from the practical point of view: IV characteristics, charge transport characteristics, operational stability, homogeneity, temperature dependence as well as energy and spatial resolution are considered. Applicability of these detectors for spectroscopic X-ray imaging is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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