GroundBIRD: observations of CMB polarization with fast scan modulation and MKIDs
GroundBIRD: observations of CMB polarization with fast scan modulation and MKIDs
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GroundBIRD：通过快速扫描调制和 MKID 观测 CMB 偏振
DOI：
10.1117/12.2231672
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
J. Suzuki (18番目) et al.
中科院分区：
文献类型：
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作者：
S. Oguri;J. Suzuki (18番目) et al.
宇宙微波背景（CMB）辐射中的偏振模式包含了宇宙早期阶段的丰富知识。特别是它们在大角度尺度（> 1°）的奇宇称模式，即原始 B 模式，是宇宙膨胀的确凿证据。 GroundBIRD 实验旨在使用地面设备检测这些 B 模式，该设备包括多种新型设备：高速旋转扫描系统、冷光学器件和微波动感电感探测器 (MKID)。我们计划于 2017 年开始在加那利群岛进行观测。在本文中，我们介绍了我们仪器的开发状况。我们建立了一个允许 MKID 在光学配置中运行的环境，其中 MKID 观察来自望远镜孔径外部的辐射。我们还构建了 MKID 原型，并正在光学配置中对其进行测试。
Polarized patterns in the cosmic microwave background (CMB) radiation contains rich knowledge for early stage of the universe. In particular their odd-parity patterns at large angular scale (> 1°), primordial B-modes, are smoking-gun evidence for the cosmic inflation. The GroundBIRD experiment aims to detect these B-modes with a ground-based apparatus that includes several novel devices: a high-speed rotational scan system, cold optics, and microwave kinetic inductance detectors (MKIDs). We plan to start observations in the Canary Islands in 2017. In this paper, we present the status of the development of our instruments. We established an environment that allows operation of our MKIDs in an optical configuration, in which the MKIDs observe radiations from the outside of the telescope aperture. We have also constructed MKID prototypes, and we are testing them in the optical configuration.