Design and performance of dual-polarization lumped-element kinetic inductance detectors for millimeter-wave polarimetry
Design and performance of dual-polarization lumped-element kinetic inductance detectors for millimeter-wave polarimetry
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用于毫米波偏振测量的双偏振集总元件动感电感探测器的设计和性能
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
C. Tucker
中科院分区：
文献类型：
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作者：
H. McCarrick;G. Jones;Bradley R. Johnson;M. Abitbol;P. Ade;S. Bryan;P. Day;T. Essinger;D. Flanigan;H. Leduc;M. Limon;P. Mauskopf;A.J. Miller;C. Tucker
集总元件动态电感探测器（LEKID）是一种有吸引力的毫米波观测技术，需要大量极低噪声探测器阵列。我们设计，制造和表征64元件（128 LEKID）阵列的喇叭耦合，双偏振LEKID优化地面CMB偏振。我们的设备是敏感的两个正交极化在一个单一的频谱带为中心的150千兆赫与$三角洲
u/
u=0.2$。65美元的 10 × 65 × 105 mm的正方形阵列被设计成平铺到光学系统的焦平面中。我们证明了这些双偏振LEKID的可行性与实验室测量。LEKID模块在亚开尔文低温恒温器中使用基于FPGA的读出系统进行测试，该低温恒温器使用两级绝热退磁制冷机。该设备的特点是使用黑体和毫米波源。偏振特性的测量与低温阶梯半波片。我们测量了谐振腔参数和探测器灵敏度、噪声谱、动态范围和偏振响应。谐振器的内部品质因数接近1 imes 10^{6}$.该探测器在正交偏振方向上具有均匀的响应，并具有很大的动态范围。探测器的光子噪声限制在1 pW以上的吸收功率。在3.4K黑体负载下的噪声等效温度为80%。整个阵列在单个读出线上多路复用，证明了128的多路复用因子。阵列和读出满足对于512的复用因子同时读出4个阵列的要求。这项实验室研究展示了第一个为CMB偏振测量优化的双偏振LEKID阵列，并显示了探测器对天空观测的准备情况。
Lumped-element kinetic inductance detectors (LEKIDs) are an attractive technology for millimeter-wave observations that require large arrays of extremely low-noise detectors. We designed, fabricated and characterized 64-element (128 LEKID) arrays of horn-coupled, dual-polarization LEKIDs optimized for ground-based CMB polarimetry. Our devices are sensitive to two orthogonal polarizations in a single spectral band centered on 150 GHz with $Delta
u/
u=0.2$. The $65 imes 65$ mm square arrays are designed to be tiled into the focal plane of an optical system. We demonstrate the viability of these dual-polarization LEKIDs with laboratory measurements. The LEKID modules are tested with an FPGA-based readout system in a sub-kelvin cryostat that uses a two-stage adiabatic demagnetization refrigerator. The devices are characterized using a blackbody and a millimeter-wave source. The polarization properties are measured with a cryogenic stepped half-wave plate. We measure the resonator parameters and the detector sensitivity, noise spectrum, dynamic range, and polarization response. The resonators have internal quality factors approaching $1 imes 10^{6}$. The detectors have uniform response between orthogonal polarizations and a large dynamic range. The detectors are photon-noise limited above 1 pW of absorbed power. The noise-equivalent temperatures under a 3.4 K blackbody load are $ 80%. The entire array is multiplexed on a single readout line, demonstrating a multiplexing factor of 128. The array and readout meet the requirements for 4 arrays to be read out simultaneously for a multiplexing factor of 512. This laboratory study demonstrates the first dual-polarization LEKID array optimized for CMB polarimetry and shows the readiness of the detectors for on-sky observations.
DOI：
10.2172/1352047
发表时间：
2016-10
期刊：
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影响因子：
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作者：
K. Abazajian;Peter Adshead;Z. Ahmed;S. Allen;D. Alonso;K. Arnold;C. Baccigalupi;J. Bartlett;
通讯作者：
K. Abazajian;Peter Adshead;Z. Ahmed;S. Allen;D. Alonso;K. Arnold;C. Baccigalupi;J. Bartlett;
在宽频带上测量的超导体对断对辐射的非平衡响应
影响因子：
4
作者：
De Visser P
通讯作者：
De Visser P