先进的CCD成像光谱仪十五年
Fifteen years of the Advanced CCD Imaging Spectrometer
摘要：
钱德拉X射线天文台上的先进CCD成像光谱仪进入在轨运行的第15个年头，它继续运行良好，并产生惊人的科学成果。由于辐射损害、分子污染和航天器的普遍老化，货物预报信息系统的响应在观测站的整个寿命期间不断变化。在这里，我们提出的重点从仪器小组的监测方案和我们的期望，未来的货物预报信息系统。ACIS校准源产生多个线能量并完全照亮整个焦平面，这极大地促进了电荷转移效率和污染吸收的测量。虽然放射源的放射性衰变降低了其效用，但它继续提供关于仪器健康状况的宝贵数据。货物预报信息系统的性能变化仍然是可以管理的，并不表明对货物预报信息系统的寿命有任何限制。
英文摘要：
As the Advanced CCD Imaging Spectrometer (ACIS) on the Chandra X-ray Observatory enters its fifteenth year of operation on orbit, it continues to perform well and produce spectacular scientific results. The response of ACIS has evolved over the lifetime of the observatory due to radiation damage, molecular contamination and aging of the spacecraft in general. Here we present highlights from the instrument team's monitoring program and our expectations for the future of ACIS. The ACIS calibration source produces multiple line energies and fully illuminates the entire focal plane which has greatly facilitated the measurement of charge transfer inefficiency and absorption from contamination. While the radioactive decay of the source has decreased its utility, it continues to provide valuable data on the health of the instrument. Performance changes on ACIS continue to be manageable, and do not indicate any limitations on ACIS lifetime.
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