Thermal kinetic inductance detectors for CMB and sub millimeter observations (Conference Presentation)
Thermal kinetic inductance detectors for CMB and sub millimeter observations (Conference Presentation)
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用于 CMB 和亚毫米观测的热动力电感探测器（会议演示）
DOI：
10.1117/12.2314372
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
A. Turner
中科院分区：
文献类型：
--
作者：
R. O’Brient;B. Steinbach;J. Bock;A. Wandui;Hien Nguyen;A. Turner
我们正在开发用于亚毫米天文和CMB偏振测量的热动力学电感探测器（TKID）， BICEP阵列的250GHz尘埃监测摄像机是早期应用。我们通过电阻端接天线馈电微带电路将功率耦合到我们的测热计上，并使用膜隔离微波动力学电感温度计（MKIT）检测温度变化。MKIT与离岛电容器谐振，并与微带传输线电容耦合，提供类似于传统非声子介导的KIDs的射频复用。通过将准粒子的吸收、传感和弛豫分解到不同的子器件中，我们获得了比KIDs更多的设计自由度，并且可以定制探测器的性能。我们将报告我们的光耦合tkid的设计和性能，并对灵敏度进行评论，重点介绍TLS和振动噪声机制。我们还将展示由天线阵列和探测器耦合功率定义的探测器光学特性的初步研究结果。最后，我们将描述900探测器探路者相机的设计，这将先于完整的20,000 BICEP阵列相机。
We are developing Thermal Kinetic Inductance Detector (TKID) bolometers for submillimter astronomy and CMB polarimetry with the BICEP Array's 250GHz dust monitor camera as an early application. We couple power to our bolometers by resistive terminations to antenna-fed microstrip circuits and sense changes in temperature with a membrane isolated microwave kinetic inductance thermometer (MKIT). The MKIT resonates with an off-island capacitor and capacitively couples to a microstrip transmission line to provide radio-frequency multiplexing analogous to that of traditional non-phonon-mediated KIDs. By splitting the absorption, sensing, and relaxation of quasiparticles back to the thermal bath into different sub-devices, we attain more design degrees of freedom than KIDs and can tailor the detector’s performance. We will report on the design and performance of our optically coupled TKIDs and comment on the sensitivity, emphasizing TLS and vibrational noise mechanisms. We will also show preliminary results from studies of the detectors optical properties as defined by the antenna-array the coupled power to the detector. Lastly, we will describe designs for a 900 detector pathfinder camera that will precede the full 20,000 BICEP Array camera.