The DESI fiber system
The DESI fiber system
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DOI：
10.1117/12.2312176
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
C. Poppett;R. Sharples;J. Edelstein;J. Schmoll;D. Bramall
中科院分区：
文献类型：
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作者：
C. Poppett;R. Sharples;J. Edelstein;J. Schmoll;D. Bramall
暗能量光谱仪（DESI）正在建造中，它将使用重子声学振荡技术来测量宇宙的膨胀历史。在实验期间，将测量超过14000平方度的3500万个星系和类星体的光谱。KPNO Mayall望远镜的新主焦点校正器将为5000个光纤定位器提供光线。这些光纤依次为10台宽带光谱仪提供信号。我们将描述DESI光纤系统的设计和性能。这包括5000个定制定位器光纤组件，拼接到10根光纤电缆，以狭缝阵列终止。
The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 sq deg will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5000 fiber optic positioners. The fibers in turn feed ten broad-band spectrographs. We will describe the design and performance of the DESI fiber system. This includes 5000 custom positioner fiber assemblies, spliced to 10 fiber cables terminated in a slit array.