The large-scale polarization explorer (LSPE) is a cosmology program for the measurement of large-scale curl-like features (B-modes) in the polarization of the cosmic microwave background. Its goal is to constrain the background of inflationary gravity waves traveling through the universe at the time of matter-radiation decoupling. The two instruments of LSPE are meant to synergically operate by covering a large portion of the northern microwave sky. LSPE/STRIP is a coherent array of receivers planned to be operated from the Teide Observatory in Tenerife, for the control and characterization of the low-frequency polarized signals of galactic origin; LSPE/SWIPE is a balloon-borne bolometric polarimeter based on 330 large throughput multi-moded detectors, designed to measure the CMB polarization at 150 GHz and to monitor the polarized emission by galactic dust above 200 GHz. The combined performance and the expected level of systematics mitigation will allow LSPE to constrain primordial B-modes down to a tensor/scalar ratio of $$10^{-2}$$ 10 - 2 . We here report the status of the STRIP pre-commissioning phase and the progress in the characterization of the key subsystems of the SWIPE payload (namely the cryogenic polarization modulation unit and the multi-moded TES pixels) prior to receiver integration.

中文翻译：

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大规模极化探测器进展报告

大尺度偏振探测器 (LSPE) 是一个宇宙学程序，用于测量宇宙微波背景偏振中的大尺度卷曲状特征（B 模式）。它的目标是在物质-辐射解耦时限制在宇宙中传播的暴胀重力波的背景。LSPE 的两个仪器旨在通过覆盖大部分北方微波天空来协同工作。LSPE/STRIP 是一个相干接收器阵列，计划在特内里费岛的泰德天文台运行，用于控制和表征银河起源的低频极化信号；LSPE/SWIPE 是一种基于 330 个大吞吐量多模探测器的气球载热旋光仪，设计用于测量 150 GHz 的 CMB 极化并监测 200 GHz 以上的银河尘埃的极化发射。综合性能和系统缓解的预期水平将允许 LSPE 将原始 B 模式约束到 $10^{-2}$$10 - 2 的张量/标量比。我们在此报告了 STRIP 预调试阶段的状态以及接收器集成之前 SWIPE 有效载荷关键子系统（即低温偏振调制单元和多模 TES 像素）的表征进展。