宇宙学大角尺度巡天仪(CLASS) 93 GHz焦平面的设计与表征
天体物理仪器与方法
2018-07-12 v1 宇宙学与河外天体物理
摘要
宇宙学大角尺度巡天仪(CLASS)旨在探测并表征原初B模信号，并对再电离光深作出样本方差受限的测量。CLASS是一台地基、多频段微波偏振计，每天从阿塔卡马沙漠巡测70%的微波天空。所有CLASS望远镜的焦平面探测器阵列均包含光滑壁馈源喇叭，通过对称平面正交模转换器(OMT)天线耦合到跃迁边沿传感器(TES)辐射热计。这些低噪声偏振敏感探测器阵列制作于单晶硅片上，以保持TES均匀性并优化整片晶圆的光学效率。本文讨论首个CLASS 93 GHz探测器阵列的设计与表征。我们测量了探测器的暗参数、带通和噪声谱，并报告探测器受光子噪声限制。在当前82%的阵列良率下，我们估计总阵列噪声等效功率(NEP)为2.1 aW。
引用
@article{arxiv.1807.03927,
title = {Design and characterization of the Cosmology Large Angular Scale Surveyor (CLASS) 93 GHz focal plane},
author = {Sumit Dahal and Aamir Ali and John W. Appel and Thomas Essinger-Hileman and Charles Bennett and Michael Brewer and Ricardo Bustos and Manwei Chan and David T. Chuss and Joseph Cleary and Felipe Colazo and Jullianna Couto and Kevin Denis and Rolando Dünner and Joseph Eimer and Trevor Engelhoven and Pedro Fluxa and Mark Halpern and Kathleen Harrington and Kyle Helson and Gene Hilton and Gary Hinshaw and Johannes Hubmayr and Jeffrey Iuliano and Tobias Marriage and Jeffrey McMahon and Nathan Miller and Carolina Nuñez and Ivan Padilla and Gonzalo Palma and Lucas Parker and Matthew Petroff and Bastian Pradenas and Rodrigo Reeves and Carl Reintsema and Karwan Rostem and Marco Sagliocca and Kongpop U-Yen and Deniz Valle and Bingjie Wang and Qinan Wang and Duncan Watts and Janet Weiland and Edward Wollack and Zhilei Xu and Ziang Yan and Lingzhen Zen},
journal= {arXiv preprint arXiv:1807.03927},
year = {2018}
}
备注
16 pages, 9 figures