FOCCoS/PFS狭缝系统的抛光装置
Polish device for FOCCoS/PFS slit system
摘要：
光纤电缆和连接器系统（FOCCoS）用于主焦点摄谱仪（PFS），负责将光线从斯巴鲁望远镜焦平面传输到一组四台摄谱仪。每个摄谱仪将由一个凸形弯曲狭缝与616光纤组织在一个线性排列。狭缝正面覆盖着一种特殊的深色复合材料，由难熔氧化物制成，在抛光过程中能够用最少量的磨料维持其性能;这种稳定性是通过分离难熔氧化物纳米颗粒获得的，然后轻轻地加强抛光过程并提高其效率。在高性能抛光后在几个样品中测量的表面粗糙度为约0.01微米。此外，获得具有这种质量的抛光表面的时间比抛光相同尺寸的黄铜、玻璃或陶瓷表面所需的时间少约10倍。在本文中，我们描述了高质量的抛光这种类型的狭缝开发的程序。这里所描述的圆柱形抛光使用圆柱形凹金属基底，玻璃纸基于该圆柱形凹金属基底。抛光过程包括使用30微米、12微米、9微米、5微米、3微米、1微米的网格序列，最后是化学布上的胶体二氧化硅。为了获得最大的吞吐量，光纤的表面应该以这样的方式抛光，即它们是光学平坦的并且没有划痕。光纤在抛光过程的所有阶段都用显微镜进行检查，以确保高质量。通过使用圆柱形凹形复合基底作为适合于金刚石液体溶液的基底，可以提高该过程的效率。尽管这个过程完全是手工完成的，但最终的结果显示出非常高的质量。
英文摘要：
The Fiber Optical Cable and Connector System, FOCCoS, for the Prime Focus Spectrograph, PFS, is responsible for transporting light from the Subaru Telescope focal plane to a set of four spectrographs. Each spectrograph will be fed by a convex curved slit with 616 optical fibers organized in a linear arrangement. The slit frontal surface is covered with a special dark composite, made with refractory oxide, which is able to sustain its properties with minimum quantities of abrasives during the polishing process; this stability is obtained This stability is obtained by the detachment of the refractory oxide nanoparticles, which then gently reinforce gently the polishing process and increase its the efficiency. The surface roughness measured in several samples after high performance polishing was about 0.01 microns. Furthermore, the time for obtaining a polished surface with this quality is about 10 times less than the time required for polishing a brass, glass or ceramic surface of the same size. In this paper, we describe the procedure developed for high quality polishing of this type of slit. The cylindrical polishing described here, uses cylindrical concave metal bases on which glass paper is based. The polishing process consists to use grid sequences of 30 microns, 12 microns, 9 microns, 5 microns, 3 microns, 1 micron and, finally, a colloidal silica on a chemical cloth. To obtain the maximum throughput, the surface of the fibers should be polished in such a way that they are optically flat and free from scratches. The optical fibers are inspected with a microscope at all stages of the polishing process to ensure high quality. The efficiency of the process may be improved by using a cylindrical concave composite base as a substrate suitable for diamond liquid solutions. Despite this process being completely by hand, the final result shows a very high quality.
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