SPT-3G 焦平面第二年的表征与性能
天体物理仪器与方法
2018-09-05 v1 宇宙学与河外天体物理
摘要
10 米南极望远镜的第三代仪器 SPT-3G 于 2017 年 1 月首次安装。除了全新的低温恒温器、二级望远镜光学系统和读出电子学外，焦平面中的探测器数量较先前仪器增加了一个数量级，达到约 16,000 个。SPT-3G 焦平面由十个探测器模块组成，每个模块在六英寸硅晶圆上排布有 269 个三色、偏振敏感像素的阵列。每个像素内有一个宽带、双偏振正弦天线；来自每个正交线偏振的信号由在线集总元件滤波器划分为以 95、150 和 220 GHz 为中心的三个频带，并通过超导微带传输至 Ti/Au 跃变边缘传感器（TES）辐射热计。必须严格控制 TES 薄膜、微带滤波器和辐射热计岛的特性以实现最优性能。在 SPT-3G 运行的第二年，我们已将焦平面中所有十个晶圆替换为新的探测器阵列，其调谐旨在提高成图速度和改善整体性能。在此我们讨论 2018 年焦平面的 TES 超导跃变温度与正常电阻、探测器饱和功率、带通、光学效率以及整阵列良率。
引用
@article{arxiv.1809.00033,
title = {Characterization and performance of the second-year SPT-3G focal plane},
author = {D. Dutcher and P. A. R. Ade and Z. Ahmed and A. J. Anderson and J. S. Avva and R. Basu Thakur and A. N. Bender and B. A. Benson and J. E. Carlstrom and F. W. Carter and T. W. Cecil and C. L. Chang and J. F. Cliche and A. Cukierman and T. de Haan and J. Ding and M. A. Dobbs and W. Everett and A. Foster and J. Gallicchio and A. Gilbert and J. C. Groh and S. T. Guns and N. W. Halverson and A. H. Harke-Hosemann and N. L. Harrington and J. W. Henning and W. L. Holzapfel and N. Huang and K. D. Irwin and O. B. Jeong and M. Jonas and T. S. Khaire and A. M. Kofman and M. Korman and D. L. Kubik and S. Kuhlmann and C. -L. Kuo and A. T. Lee and A. E. Lowitz and S. S. Meyer and D. Michalik and J. Montgomery and A. Nadolski and T. Natoli and H. Nguyen and G. I. Noble and V. Novosad and S. Padin and Z. Pan and J. Pearson and C. M. Posada and W. Quan and A. Rahlin and J. E. Ruhl and J. T. Sayre and E. Shirokoff and G. Smecher and J. A. Sobrin and A. A. Stark and K. T. Story and A. Suzuki and K. L. Thompson and C. Tucker and K. Vanderlinde and J. D. Vieira and G. Wang and N. Whitehorn and V. Yefremenko and K. W. Yoon and M. R. Young},
journal= {arXiv preprint arXiv:1809.00033},
year = {2018}
}
备注
13 pages, 11 figures