Development of MKIDs for Measurement of the Cosmic Microwave Background with the South Pole Telescope
Development of MKIDs for Measurement of the Cosmic Microwave Background with the South Pole Telescope
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DOI：
10.1007/s10909-022-02750-8
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发表时间：
2021-11
影响因子：
2
通讯作者：
K. Dibert;P. Barry;Z. Pan;A. Anderson;B. Benson;Clarence Chang;K. Karkare;Juliang Li;T. Natoli;M. Rouble;E. Shirokoff;A. Stark
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文献类型：
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作者：
K. Dibert;P. Barry;Z. Pan;A. Anderson;B. Benson;Clarence Chang;K. Karkare;Juliang Li;T. Natoli;M. Rouble;E. Shirokoff;A. Stark
本文详细介绍了南极望远镜（SPT）第四代接收机原型探测器的设计、仿真和初步测试结果。针对宇宙微波背景（CMB）关键次各向异性的探测进行了优化，SPT-3G+将在CMB黑体光谱峰值之外的220、285和345 GHz测量mm/亚mm天空的温度和偏振。SPT-3G+焦平面将填充微波动力学电感探测器（MKIDs），从而在降低低温复杂性的同时显著增加探测器密度。我们提出了在每个SPT-3G+观测频率下单色双偏振MKID像素的仿真设计。我们进一步描述了为提高谐振器质量和均匀性而做出的设计选择，使我们能够最大限度地提高可用的读出带宽。我们还讨论了制造过程的各个方面，使这些设备能够快速生产，并提出了一系列原型设备的初始黑暗特征。
We present details of the design, simulation, and initial test results of prototype detectors for the fourth-generation receiver of the South Pole Telescope (SPT). Optimized for the detection of key secondary anisotropies of the cosmic microwave background (CMB), SPT-3G+ will measure the temperature and polarization of the mm/sub-mm sky at 220, 285, and 345 GHz, beyond the peak of the CMB blackbody spectrum. The SPT-3G+ focal plane will be populated with microwave kinetic inductance detectors (MKIDs), allowing for significantly increased detector density with reduced cryogenic complexity. We present simulation-backed designs for single-color dual-polarization MKID pixels at each SPT-3G+ observation frequency. We further describe design choices made to promote resonator quality and uniformity, enabling us to maximize the available readout bandwidth. We also discuss aspects of the fabrication process that enable rapid production of these devices and present an initial dark characterization of a series of prototype devices.