Radiation Environment of the Chandra X-ray Observatory

机译：钱德拉X射线天文台的辐射环境

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The Chandra X-ray Observatory, the x-ray component of NASA's Great Observatories, provides unprecedented subarcsecond imaging, imaging spectrometry, and high-resolution dispersive spectroscopy of cosmic x-ray sources. During the initial phase of operatin,s ome of the focal-plane charge-coupled devices (CCDs) - namely, the front-illuminated devices - experienced an unanticipated increase in charge-transfer inefficiency (CTI). Investigation of this anomaly determined the root cause to be radiation damage by weakly penetrating protons, entering the telescope's aperture and scattered off the mirrors into the focal plane. Subsequent changes in operating procedures have slowed the rate of increase of the CTI of the front-illuminated CCDS to acceptable levels. There has been no measurable degradation of the back-illuminated CCDs.

机译：钱德拉X射线天文台是美国国家航空航天局大天文台的X射线组件，它提供了前所未有的亚秒成像，成像光谱和高分辨率X射线源的色散光谱。在操作的初始阶段，某些焦平面电荷耦合器件（CCD）-即前照式器件-的电荷转移效率（CTI）意外增加。对这一异常现象的研究确定了根本原因是由于弱穿透质子进入辐射器的孔径并从镜子散射到焦平面而导致的辐射损伤。操作程序的后续更改已将前照式CCDS的CTI的增加速度减慢到可接受的水平。背照式CCD没有可测量的退化。

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《Conference on X-Ray and Gamma-Ray Instrumentation for Astronomy XI 2-4 August 2000 San Diego, USA》|2000年|p.99-110|共12页
会议地点 San Diego CA(US)
作者
S. L. ODell; M. W. Bautz; W. C. Blackwell; Y. M. Butt; R. A. Cameron; R. F. Elsner; M. S. Gussenhoven; j. J. Kolodziejczak; J. I. Minow; R. M. Suggs; D. A. Swartz; A. F. Tennant; S. N. Virani; K. Warren;
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正文语种 eng
中图分类物理学;
关键词
radiation; protons; CCDs; space environment; space missions;

机译：辐射;质子CCD;空间环境；太空任务;

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4. A historical fluence analysis of the radiation environment of the Chandra X-ray Observatory and implications for continued radiation monitoring [C] . J.M. DePasquale, P.P. Plucinsky, D.A. Schwartz Observatory Operations: Strategies, Processes, and Systems . 2006

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机译：在钱德拉X射线天文台上使用aCIs作为粒子辐射监测器II。

Radiation Environment of the Chandra X-ray Observatory

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