用于Lynx X射线Surveyor高清晰度X射线成像仪的混合CMOS探测器
Hybrid CMOS detectors for the Lynx x-ray surveyor high definition x-ray imager
摘要：
X射线混合CMOS探测器（HCDs）是未来X射线任务的一个有前途的候选者，该任务需要高通量和精细角分辨率以及大视场，例如Lynx X射线勘测者任务概念上的高清晰度X射线成像仪（HDXI）仪器。这些器件具有快速读出能力、低功耗和抗辐射能力，同时保持0.2至10 keV的高检测效率。此外，X射线混合CMOS传感器可以被制造成具有小像素尺寸以适应高分辨率光学器件，并且近年来在噪声和光谱分辨率性能方面已经显示出很大的改进。特别是，12.5 μm间距的原型设备，包括在像素相关的双采样能力和串扰消除电容跨导放大器，已经制造和测试。这些探测器已经实现了低至5.4 e-的读取噪声，我们测量的最佳能量分辨率为148 eV（2.5%）在5.9 keV和78 eV（14.9%）在0.53 keV。我们将描述这些原型小像素X射线HCD的特性，我们将讨论其适用性的HDXI仪器的Lynx。
英文摘要：
X-ray hybrid CMOS detectors (HCDs) are a promising candidate for future x-ray missions requiring high throughput and fine angular resolution along with large field-of-view, such as the high-definition x-ray imager (HDXI) instrument on the Lynx x-ray surveyor mission concept. These devices offer fast readout capability, low power consumption, and radiation hardness while maintaining high detection efficiency from 0.2 to 10 keV. In addition, x-ray hybrid CMOS sensors may be fabricated with small pixel sizes to accommodate high-resolution optics and have shown great improvements in recent years in noise and spectral resolution performance. In particular, 12.5-μm pitch prototype devices that include in-pixel correlated double sampling capability and crosstalk eliminating capacitive transimpedance amplifiers, have been fabricated and tested. These detectors have achieved read noise as low as 5.4 e-, and we measure the best energy resolution to be 148 eV (2.5%) at 5.9 keV and 78 eV (14.9%) at 0.53 keV. We will describe the characterization of these prototype small-pixel x-ray HCDs, and we will discuss their applicability to the HDXI instrument on Lynx.
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