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arXiv 2409.05979astro-ph.IMastro-ph.COastro-ph.GA
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CCAT:Prime-Cam 的 EoR-Spec 仪器模块状态更新

CCAT: A status update on the EoR-Spec instrument module for Prime-Cam

Rodrigo Freundt, Yaqiong Li, Doug Henke, Jason Austermann, James R. Burgoyne, Scott Chapman, Steve K. Choi, Cody J. Duell, Zach Huber, Michael Niemack, Thomas N… 展开作者

Rodrigo Freundt, Yaqiong Li, Doug Henke, Jason Austermann, James R. Burgoyne, Scott Chapman, Steve K. Choi, Cody J. Duell, Zach Huber, Michael Niemack, Thomas Nikola, Lawrence Lin, Dominik A. Riechers, Gordon Stacey, Anna K. Vaskuri, Eve M. Vavagiakis, Jordan Wheeler, Bugao Zou

AI总结:

本文更新 Prime-Cam 搭载的 EoR-Spec 线强度映射仪器,概述其 [CII] 科学目标、MKIDs 与低温 FPI 设计、巡天计划及 2026 年首次开光前的研制测试状态。

摘要:

再电离纪元光谱仪(Epoch of Reionization Spectrometer,EoR-Spec)是一台即将投入使用的线强度映射(Line Intensity Mapping,LIM)仪器,旨在通过探测来自星系集合体的红移后 [CII] 158 μm 精细结构谱线,研究早期宇宙(z = 3.5 至 8)的演化。[CII] 辐射是恒星形成的极佳示踪物,因为它是受 OB 型恒星光加热的中性气体的主要冷却谱线,因此可用于探测由恒星形成导致的早期宇宙再电离。EoR-Spec 将部署在 Prime-Cam 上;Prime-Cam 是用于 6 米 Fred Young 亚毫米波望远镜(Fred Young Submillimeter Telescope,FYST)的模块化直接探测接收机,该望远镜目前由 CPI Vertex Antennentechnik GmbH 建造,并将安装在阿塔卡马沙漠 Cerro Chajnantor 山顶附近。该仪器的像面配备 6500 多个微波动态电感探测器(Microwave Kinetic Inductance Detectors,MKIDs),这些探测器由四透镜光学设计照明,并且在光学系统的光瞳处设有低温扫描式 Fabry-Perot 干涉仪(Fabry-Perot Interferometer,FPI)。FPI 旨在 210–420 GHz 的完整光谱范围内提供 R∼100 的光谱分辨本领。EoR-Spec 将在 5 年内以约 4000 小时的深度对 E-COSMOS 和 E-CDFS 天区进行层析巡天。本文介绍 EoR-Spec 最终机械/光学设计的最新进展,以及面向 2026 年首次开光的制造、表征和测试现状。

英文摘要:

The Epoch of Reionization Spectrometer (EoR-Spec) is an upcoming Line Intensity Mapping (LIM) instrument designed to study the evolution of the early universe (z = 3.5 to 8) by probing the redshifted [CII] 158 $μ$m fine-structure line from aggregates of galaxies. The [CII] emission is an excellent tracer of star formation since it is the dominant cooling line from neutral gas heated by OB star light and thus can be used to probe the reionization of the early Universe due to star formation. EoR-Spec will be deployed on Prime-Cam, a modular direct-detection receiver for the 6-meter Fred Young Submillimeter Telescope (FYST), currently under construction by CPI Vertex Antennentechnik GmbH and to be installed near the summit of Cerro Chajnantor in the Atacama Desert. This instrument features an image plane populated with more than 6500 Microwave Kinetic Inductance Detectors (MKIDs) that are illuminated by a 4-lens optical design with a cryogenic, scanning Fabry-Perot Interferometer (FPI) at the pupil of the optical system. The FPI is designed to provide a spectral resolving power of $R\sim100$ over the full spectral range of 210--420 GHz. EoR-Spec will tomographically survey the E-COSMOS and E-CDFS fields with a depth of about 4000 hours over a 5 year period. Here we give an update on EoR-Spec's final mechanical/optical design and the current status of fabrication, characterization and testing towards first light in 2026.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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