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arXiv 1801.06265astro-ph.IM
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天线耦合集总元件动态电感探测器的设计与性能

Design and performance of the antenna coupled lumped-element kinetic inductance detector

P. S. Barry, S. Doyle, A. L. Hornsby, A. Kofman, E. Mayer, Q. Y. Tang, J. Vieira, E. Shirokoff

摘要:

由低噪声、偏振敏感探测器组成的焦平面阵列使宇宙微波背景(CMB)研究的开创性进展成为可能。为了取得进一步的进展,下一代CMB实验(如CMB-S4)将需要比目前的第3阶段仪器大量增加探测器数量。动态电感检测器(KID)阵列由于其固有的多路复用优点和相对低温简单性而提供了实现这种大格式阵列的可能路径。在这篇论文中,我们报告了传统KID设计的一种新变体的设计;天线耦合集总元件KID。放置在优化半球形透镜后面的极化敏感双槽天线将功率耦合到薄膜超导微带线上。然后,功率被引导到铝KID的感应部分,在那里它被吸收并修改KID的谐振频率和品质因数。我们提出的各个方面的设计和初步结果,从第一组的七个元素的原型阵列,并比较预期的建模性能。

英文摘要:

Focal plane arrays consisting of low-noise, polarisation-sensitive detectors have made possible the pioneering advances in the study of the cosmic microwave background (CMB). To make further progress, the next generation of CMB experiments (e.g. CMB-S4) will require a substantial increase in the number of detectors compared to the current stage 3 instruments. Arrays of kinetic inductance detectors (KIDs) provide a possible path to realising such large format arrays owing to their intrinsic multiplexing advantage and relative cryogenic simplicity. In this proceedings, we report on the design of a novel variant of the traditional KID design; the antenna-coupled lumped-element KID. A polarisation sensitive twin-slot antenna placed behind an optimised hemispherical lens couples power onto a thin-film superconducting microstrip line. The power is then guided into the inductive section of an aluminium KID where it is absorbed and modifies both the resonant frequency and quality factor of the KID. We present the various aspects of the design and preliminary results from the first set of seven-element prototype arrays and compare to the expected modelled performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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