Thermal Design and Characterization of Transition-Edge Sensor (TES) Bolometers for Frequency-Domain Multiplexing
Thermal Design and Characterization of Transition-Edge Sensor (TES) Bolometers for Frequency-Domain Multiplexing
复制标题
用于频域复用的过渡边缘传感器 (TES) 辐射热测量计的热设计和表征
DOI：
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发表时间：
2009
影响因子：
1.8
通讯作者：
J. Vieira
中科院分区：
文献类型：
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作者：
Martin Lueker;B. Benson;Clarence L. Chang;Hsiao;M. Dobbs;W. Holzapfel;T. Lanting;Adrian T. Lee;J. Mehl;T. Plagge;E. Shirokoff;H. Spieler;J. Vieira
在当代宇宙微波背景实验中，测辐射热探测器通常是背景受限的，在这种情况下，仪器的灵敏度只能通过增加背景受限探测器的数量来提高，因此当代TES接收器包含尽可能多的像素。频域多路复用（fMUX）是用于用一个SQUID阅读许多检测器的一种策略。对于任何读出系统，重要的是仔细评估探测器的热设计，结合读出带宽，以确保稳定的电热反馈（ETF）。我们展示了一种新的技术，用于表征我们的探测器的热电路，使用交流偏置和fMUX电子。这种技术被用来研究TES测辐射热计的内部热耦合。我们说明了如何通过这种技术收集的见解有助于提高我们的多路复用探测器的南极望远镜（SPT）的稳定性。
In contemporary cosmic microwave background experiments, bolometric detectors are often background limited, and in this case the sensitivity of instruments can only be improved by increasing the number of background-limited detectors, and so contemporary TES receivers contain as many pixels as possible. Frequency-domain multiplexing (fMUX) is one strategy for reading out many detectors with one SQUID. For any readout system, it is important to carefully evaluate the thermal design of detector, in conjunction with the readout bandwidth, in order to ensure stable electro-thermal feedback (ETF). We demonstrate a novel technique for characterizing the thermal circuit of our detectors, using am AC-bias and the fMUX electronics. This technique is used to study the internal thermal coupling of a TES bolometer. We illustrate how the insights gathered by this technique have been instrumental in improving the stability of our multiplexed detectors for the south pole telescope (SPT).