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首页> 外文会议>UV and Gamma-Ray Space Telescope Systems pt.2 >Development of Lightweight X-Ray Mirrors for the Constellation-X Mission
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Development of Lightweight X-Ray Mirrors for the Constellation-X Mission

机译：为“星座” X任务开发轻型X射线镜

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摘要

Constellation-X is NASA's next major X-ray astronomical observatory. Its salient features are its very large effective X-ray collecting area (about 30,000 cm~2 at 1 keV) and high resolution gratings and cryogenic detector systems. The large mirror effective area presents unique and unprecedented challenges in optical fabrication and metrology. In this paper we report on the development of very lightweight X-ray mirrors that address these challenges. We use a two-step mirror fabrication process: (1) slumping thin (0.4mm) flat glass sheets to generate high quality substrates that may have mid-frequency figure errors, and (2) reducing or eliminating the mid-frequency errors using an epoxy replication process. We discuss problems and the potential associated with each of these two steps. Based on our work to date, we expect that this technology to be able to meet the baseline Constellation-X requirements, i.e, 15″ HPD (half-power diameter) at the observatory level. In the next few years, we will further advance this technology and expect it to reach the Constellation-X goal: 5″ HPD at the observatory level.
机译：Constellation-X是NASA的下一个主要X射线天文观测台。它的显着特点是其非常大的有效X射线收集面积（在1 keV时约为30,000 cm〜2）以及高分辨率光栅和低温检测器系统。大的镜面有效面积在光学制造和计量方面提出了独特而前所未有的挑战。在本文中，我们报告了解决这些挑战的超轻型X射线镜的发展情况。我们使用两步镜制造过程：（1）将薄的（0.4mm）平板玻璃片塌落，以生成可能具有中频图形误差的高质量基板，以及（2）使用或减少或消除中频误差。环氧复制过程。我们讨论了与这两个步骤中的每个步骤相关的问题和潜力。根据迄今为止的工作，我们希望该技术能够满足星座星座X的基本要求，即天文台水平的15英寸HPD（半功率直径）。在接下来的几年中，我们将进一步推动这项技术的发展，并有望达到Constellation-X的目标：天文台级5英寸HPD。

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