论文标题
Megamapper：一种用于研究通货膨胀和暗能量的阶段5光谱仪器概念
The MegaMapper: A Stage-5 Spectroscopic Instrument Concept for the Study of Inflation and Dark Energy
论文作者
论文摘要
在这份白皮书中，我们提出了Megamapper的概念。 Megamapper是一个拟议的基于地面的实验，用于测量$ 2 <z <5 $的星系红移的通货膨胀参数和暗能量。为了通过中期投资获得破坏性的结果，Megamapper结合了现有的关键路径元素技术，并推动了其他设计领域的创新发展。为此，我们设想了一个6.5 m的麦哲伦式望远镜，带有新设计的宽场，再加上DESI光谱仪和小型机器人，以实现至少26,000的多路复用。这将与RedShift兴趣范围内预期可实现的目标密度相匹配，并在现有最新技术的情况下提供10倍的能力，而项目预算增加了10倍。
In this white paper, we present the MegaMapper concept. The MegaMapper is a proposed ground-based experiment to measure Inflation parameters and Dark Energy from galaxy redshifts at $2<z<5$. In order to achieve path-breaking results with a mid-scale investment, the MegaMapper combines existing technologies for critical path elements and pushes innovative development in other design areas. To this aim, we envision a 6.5-m Magellan-like telescope, with a newly designed wide field, coupled with DESI spectrographs, and small-pitch robots to achieve multiplexing of at least 26,000. This will match the expected achievable target density in the redshift range of interest and provide a 10x capability over the existing state-of the art, without a 10x increase in project budget.
