The DESI Experiment Part II: Instrument Design
The DESI Experiment Part II: Instrument Design
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DOI：
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发表时间：
2016-10
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通讯作者：
Desi Collaboration Amir Aghamousa;J. Aguilar;S. Ahlen;S. Alam;L. Allen;C. Prieto;J. Annis;S. Bailey-S
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作者：
Desi Collaboration Amir Aghamousa;J. Aguilar;S. Ahlen;S. Alam;L. Allen;C. Prieto;J. Annis;S. Bailey-S
DESI（暗能量光谱仪器）是第四阶段的地基暗能量实验，将通过广域星系和类星体红移调查研究重子声学振荡和结构的增长。DESI仪器是一款机器人驱动的光纤光谱仪，能够在360 nm至980 nm的波长范围内同时获取多达5，000个光谱。光纤为10个三臂光谱仪提供信号，其分辨率在2000到5500之间，具体取决于波长。DESI仪器将用于进行一项为期五年的调查，旨在覆盖14，000度。这台功能强大的仪器将安装在亚利桑那州基特峰的4米Mayall望远镜的主焦点处，沿着一个新的光学校正器，它将提供3度直径的视场。DESI合作还将提供光谱管道和数据管理系统，以减少和存档所有数据，供最终公众使用。
DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey. The DESI instrument is a robotically-actuated, fiber-fed spectrograph capable of taking up to 5,000 simultaneous spectra over a wavelength range from 360 nm to 980 nm. The fibers feed ten three-arm spectrographs with resolution $R= \lambda/\Delta\lambda$ between 2000 and 5500, depending on wavelength. The DESI instrument will be used to conduct a five-year survey designed to cover 14,000 deg$^2$. This powerful instrument will be installed at prime focus on the 4-m Mayall telescope in Kitt Peak, Arizona, along with a new optical corrector, which will provide a three-degree diameter field of view. The DESI collaboration will also deliver a spectroscopic pipeline and data management system to reduce and archive all data for eventual public use.