A tower concept for the off-plane x-ray grating spectrometer for the International X-ray Observatory
A tower concept for the off-plane x-ray grating spectrometer for the International X-ray Observatory
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国际 X 射线天文台离面 X 射线光栅光谱仪的塔式概念
DOI：
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发表时间：
2010
期刊：
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通讯作者：
D. Dailey
中科院分区：
文献类型：
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作者：
S. Casement;R. McEntaffer;W. Cash;T. Johnson;C. Lillie;D. Dailey
为了满足国际X射线天文台(IXO)的需要，正在开发一种离面X射线栅谱仪(OP-XGS)的概念。OP-XGS将在0.3-1kev波段提供所需的R>；3000光谱分辨率，有效收集面积为>；1000 cm2，利用已在火箭实验中飞行的当前一代反射栅所获得的经验。我们已经开发了几种满足或超过这些要求的潜在配置。本文将重点介绍其中一种构型--“塔”概念的机械设计和要求。这种配置通过塔架将光栅模块安装到仪器平台上，从而允许与相机模块直接对准。这降低了对准问题的复杂性，同时也将XGS的总质量降至最低。我们已经为这一备选方案制定了初步的接口概念和资源要求，供特派团小组审查设计驱动程序。我们将这一概念的资源需求与OP-XGS小组审查过的其他概念所需的资源进行了对比。此外，我们已经确定了塔楼设计概念中需要潜在技术演示的部分，以便在初步设计审查之前达到TRL 6。
An Off-Plane X-ray Grating Spectrometer (OP-XGS) concept is being developed to meet the needs of the International X-ray Observatory (IXO). The OP-XGS will provide the required spectral resolution of R >3000 over the 0.3 - 1 keV band with >1000 cm2 effective collecting area, using experience gained with the current generation of reflection gratings already flown on rocket experiments. We have developed several potential configurations that meet or exceed these requirements. This paper will focus on the mechanical design and requirements for one of these configurations, the "tower" concept. This configuration mounts the grating modules to the instrument platform via a tower, allowing direct alignment with the camera module. This reduces the complexity of the alignment problem while also minimizing the overall mass of the XGS. We have developed an initial interface concept and resource requirements for this option to be reviewed by the mission teams for design drivers. We contrast the resource requirements for this concept with those required for other concepts which have been reviewed by the OP-XGS team. Further, we have identified those portions of the tower design concept that will require potential technology demonstration to reach TRL 6 prior to the Preliminary Design Review.