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Gas Electron Multipliers for Potential Applications to Digital Radiography

机译：气体电子倍增器在数字射线照相中的潜在应用

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摘要

The gas electron multiplier (GEM), placed in the drift volume of a conventional gas detector, is a conceptually simple device for producing a large gas gain by concentrating the drift electric field over a very short distance to the point that electron avalanching occurs. This device consists of a thin insulating foil of several tens of μm in thickness, covered on each side with a thin metal layer, with tiny holes, usually 100 μm or less in diameter, and with a spacing of 100-200 μm through the entire foil, perforated by using chemical etching or high-powered laser beam technique. In this study, we have investigated its operating properties with various experimental conditions and demonstrated the possibility of using this device as a digital X-ray imaging sensor, by acquiring X-ray images based upon the scintillation lights of the GEM with a standard CCD camera.
机译：放置在常规气体检测器的漂移体积中的气体电子倍增器（GEM）是一种概念上简单的设备，可通过将漂移电场集中在非常短的距离上至发生电子雪崩的点来产生较大的气体增益。该设备由厚度为几十μm的绝缘薄膜组成，该绝缘薄膜的每侧覆盖有一层薄金属层，并带有直径通常为100μm或更小的微小孔，并且整个间距为100-200μm箔，通过化学蚀刻或大功率激光束技术打孔。在这项研究中，我们研究了其在各种实验条件下的操作性能，并证明了通过使用标准CCD相机根据GEM的闪烁光获取X射线图像来证明将该设备用作数字X射线成像传感器的可能性。 。

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