CCD readout for the IXO off-plane grating spectrometer

CCD readout for the IXO off-plane grating spectrometer
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IXO 离面光栅光谱仪的 CCD 读数

DOI:
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发表时间:
2009
期刊:
Optical Engineering + Applications
影响因子:
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通讯作者:
J. Endicott
J. Endicott
中科院分区:
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文献类型:
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作者:
A. Holland;N. Murray;J. Tutt;R. McEntaffer;P. Pool;J. Endicott

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国际 X 射线天文台 (IXO) 项目是 NASA Con-X 和 ESA/Jaxa XEUS 任务概念合并的结果。 IXO 任务大纲有一个在 0.3-1 keV 频段运行的 X 射线光栅光谱仪。 CCD 是用于光栅光谱仪读数的理想探测器,并且已在 XMM 和 Chandra 上以类似的功能飞行。在这里,我们回顾 IXO 的离面 X 射线光栅光谱仪概念,并讨论 CCD 技术在 0.2-2 keV X 射线波段检测的优化。我们将讨论对先前飞行的现有技术的改进,以及电子倍增 CCD 等新技术的使用,该技术可以在这些软 X 射线能量下提供增强的信噪比,以及辐射强化措施和降低对光学杂散光敏感度的方法。最后,我们还将讨论基于 CMOS 的替代技术,该技术可能在未来几年内开发出来以取代 CCD 技术,具有更高的系统集成度和抗辐射能力。
The International X-ray Observatory (IXO) project is the result of a merger between the NASA Con-X and ESA/Jaxa XEUS mission concepts. The IXO mission outline has an X-ray grating spectrometer operating in the 0.3-1 keV band. CCDs are the ideal detector for the readout of the grating spectrometer instrument and have been flown in similar functions on XMM and Chandra. Here we review the Off-Plane X-ray Grating Spectrometer concept for IXO and discuss the optimization of CCD technology for detection in the 0.2-2 keV X-ray band. We will discuss improvements to the existing technology previously flown, and the use of new technology such as electron multiplying CCDs which can provide enhanced signal to noise at these soft X-ray energies, together with radiation hardening measures and methods of reducing sensitivity to optical stray light. We will also end by discussing alternative CMOS-based technology which may be developed in future years to replace the CCD technology, offering benefits of higher system integration and radiation hardness.