arXiv 2608.26202astro-ph.IMastro-ph.COphysics.ins-det

用于BICEP阵列BA4-90/150接收机的钛过渡边缘传感器晶圆工程

Engineering of titanium transition edge sensor wafers for the BA4-90/150 receiver of BICEP Array

A. Patel, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, J. J. Bock, V. Buza, B. Cantrall, J. R. Cheshire, J. Connors, J… 展开作者

A. Patel, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, J. J. Bock, V. Buza, B. Cantrall, J. R. Cheshire, J. Connors, J. Cornelison, M. Crumrine, A. J. Cukierman, E. Denison, L. Duband, M. A. Echter, M. Eiben, B. D. Elwood, S. Fatigoni, J. P. Filippini, A. Fortes, M. Gao, C. Giannakopoulos, N. Goeckner-Wald, D. C. Goldfinger, S. Gratton, J. A. Grayson, A. Greathouse, P. K. Grimes, M. Halpern, S. Henderson, T. D. Hoang, J. Hubmayr, H. Hui, K. D. Irwin, M. Izquierdo Poza, J. H. Kang, K. S. Karkare, S. Kefeli, J. M. Kovac, C. Kuo, K. Lasko, K. Lau, M. Lautzenhiser, T. Liu, S. C. Mackey, N. Maher, K. G. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, H. T. Nguyen, R. O'Brient, S. N. Paine, M. A. Petroff, A. R. Polish, T. Prouve, C. Pryke, C. D. Reintsema, T. Romand, M. Salatino, A. Schillaci, B. Schmitt, B. Singari, A. Soliman, T. St. Germaine, A. Steiger, B. Steinbach, R. Sudiwala, K. L. Thompson, C. Tucker, A. D. Turner, C. Vergès, A. G. Vieregg, A. Wandui, A. C. Weber, J. Willmert, W. L. K. Wu, H. Yang, C. Yu, L. Zeng, C. Zhang, S. Zhang

首次发表 2026-08-28

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中文总结 AI 辅助

本研究针对BICEP阵列BA4-90/150接收机钛过渡边缘传感器环路增益过高导致噪声混叠的问题，制备测试含16种改进架构的原型晶圆，其性能结果将为最终集成晶圆设计提供依据。

中文摘要 AI 辅助

BA4-90/150是BICEP阵列（BA）系列的第四台接收机，为90/150 GHz双频仪器，其工作频段对宇宙微波背景（CMB）极化的灵敏度达到最大化。该接收机将于2026-2027年南极夏季部署，将助力BA实现CMB极化的超高精度测量，并强化对暴胀模型的约束。现有BA接收机的近期测量显示，钛（Ti）过渡边缘传感器（TES）中意外偏高的环路增益会产生过量高频噪声，该噪声会通过时分复用读出混叠到科学频段。为降低环路增益，我们制备并测试了含16种改进探测器架构的Ti TES原型晶圆，这些架构旨在拓宽超导转变、降低转变陡度（α）。我们给出的探测器性能结果将直接为正设计中用于接收机全面调试的最终集成晶圆提供依据。

英文摘要

BA4-90/150, the fourth receiver to be deployed in the BICEP Array (BA) series, is a dichroic 90/150 GHz instrument targeting the frequency space where sensitivity to the CMB polarization is maximized. The receiver will be deployed in the 2026-2027 austral summer, and is set to position BA to achieve exceptionally precise measurements of cosmic microwave background (CMB) polarization and strengthen constraints on inflationary models. Recent measurements in existing BA receivers suggest that unexpectedly high loop gain in the titanium (Ti) transition edge sensors (TESs) produces excess high-frequency noise that is consequently aliased down into the science band through the time-division multiplexed readout. To reduce the loop gain, we fabricated and tested prototype Ti TES wafers containing 16 modified detector architectures designed to broaden the superconducting transition and reduce the transition steepness (alpha). We present detector performance results, which will directly inform the final integrated wafer now being designed for full receiver commissioning.