论文标题
Simons天文台焦点平面模块：检测器重新偏差，偏置步骤测量
Simons Observatory Focal-Plane Module: Detector Re-biasing With Bias-step Measurements
论文作者
论文摘要
Simons天文台是一个基于地面的宇宙微波背景调查实验，由三个0.5 m的小型伸缩望远镜和一个6 m的大型望远镜组成，位于辣椒的Atacama沙漠中的5200 m海拔。在49个单独的焦距平面模块中，将60,000个过渡边缘传感器（TES）施加机部署在四个望远镜的套件中，覆盖30/40 GHz低频（LF），90/150 GHz MID频率（MF）和220/280 GHz Ultra-High频率（UHF）。每个MF和UHF焦距模块包装1720光学检测器散布在12个检测器偏置线上，从而为检测器提供电压偏置。在观察过程中，探测器会受到不同大气发射的影响，因此需要相应地偏向偏见。重新偏见的过程包括以快速方式测量检测器的特性，例如TES抗性和响应性。基于结果，然后在一个偏置线中的检测器带有合适的电压偏置。在这里，我们使用偏置步骤测量结果描述了一种在模块中重新偏置检测器的技术。
The Simons Observatory is a ground-based cosmic microwave background survey experiment that consists of three 0.5 m small-aperture telescopes and one 6 m large-aperture telescope, sited at an elevation of 5200 m in the Atacama Desert in Chile. SO will deploy 60,000 transition-edge sensor (TES) bolometers in 49 separate focal-plane modules across a suite of four telescopes covering 30/40 GHz low frequency (LF), 90/150 GHz mid frequency (MF), and 220/280 GHz ultra-high frequency (UHF). Each MF and UHF focal-plane module packages 1720 optical detectors spreading across 12 detector bias lines that provide voltage biasing to the detectors. During observation, detectors are subject to varying atmospheric emission and hence need to be re-biased accordingly. The re-biasing process includes measuring the detector properties such as the TES resistance and responsivity in a fast manner. Based on the result, detectors within one bias line then are biased with suitable voltage. Here we describe a technique for re-biasing detectors in the modules using the result from bias-step measurement.
