RECOVERY OF LARGE ANGULAR SCALE CMB POLARIZATION FOR INSTRUMENTS EMPLOYING VARIABLE-DELAY POLARIZATION MODULATORS
RECOVERY OF LARGE ANGULAR SCALE CMB POLARIZATION FOR INSTRUMENTS EMPLOYING VARIABLE-DELAY POLARIZATION MODULATORS
复制标题
采用可变延迟偏振调制器的仪器的大角尺度 CMB 偏振恢复
DOI：
10.3847/0004-637x/818/2/151
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
D. Watts
中科院分区：
文献类型：
--
作者：
N. Miller;D. Chuss;T. Marriage;Edward J. Wollack;J. Appel;C. Bennett;J. Eimer;T. Essinger;D. Fixsen;K. Harrington;S. Moseley;K. Rostem;E. Switzer;D. Watts
可变延迟偏振调制器（VPMs）目前正在实施的实验，旨在测量大角度尺度上的宇宙微波背景的偏振，因为它们能够提供快速，前端偏振调制和控制系统误差。尽管VPM提供了诸多优势，但识别和减轻泄漏到信号的同步调制分量中的任何时变效应也很重要。本文考虑并解决了300 K VPM排放对系统性能的影响。虽然仪器设计可以大大降低调制VPM发射的影响，但仍会有一些残留的调制信号。VPM的排放处理中存在的旋转失调和温度变化。时序数据的模拟被用来评估这些残余误差对功率谱的影响。本文中的分析和建模指导实验人员使用VPM作为前端调制器的观测的关键方面。通过实现所描述的表征和控制，前端VPM调制可以非常强大地用于减轻大角度尺度极化测量中的1/f噪声。研究的系统误差从根本上限制了大尺度上的张量标量比r = 0.01的B模式的检测和表征。实际上，r < 0.01是通过显著改进的表征和控制实现的。
Variable-delay Polarization Modulators (VPMs) are currently being implemented in experiments designed to measure the polarization of the cosmic microwave background on large angular scales because of their capability for providing rapid, front-end polarization modulation and control over systematic errors. Despite the advantages provided by the VPM, it is important to identify and mitigate any time-varying effects that leak into the synchronously modulated component of the signal. In this paper, the effect of emission from a 300 K VPM on the system performance is considered and addressed. Though instrument design can greatly reduce the influence of modulated VPM emission, some residual modulated signal is expected. VPM emission is treated in the presence of rotational misalignments and temperature variation. Simulations of time-ordered data are used to evaluate the effect of these residual errors on the power spectrum. The analysis and modeling in this paper guides experimentalists on the critical aspects of observations using VPMs as front-end modulators. By implementing the characterizations and controls as described, front-end VPM modulation can be very powerful for mitigating 1/f noise in large angular scale polarimetric surveys. None of the systematic errors studied fundamentally limit the detection and characterization of B-modes on large scales for a tensor-to-scalar ratio of r = 0.01. Indeed, r < 0.01 is achievable with commensurately improved characterizations and controls.
DOI：
10.1088/0004-637x/692/2/1221
发表时间：
2008-05
期刊：
The Astrophysical Journal
影响因子：
--
作者：
QUaD collaboration J. R. Hinderks;P. Ade;J. Bock;M. Bowden;M. L. Brown;G. Cahill;J. Carlstrom;P. G. Castro;S. Church;T. Culverhouse;R. Friedman;K. Ganga;W. Gear;S. Gupta;J. Harris;V. Haynes;B. Keating;J. Kovac;E. Kirby;A. E. Lange;E. Leitch;O. Mallie;S. Melhuish;Y. Memari;J. A. Murphy;A. Orlando;R. Schwarz;C. O'Sullivan;L. Piccirillo;C. Pryke;N. Rajguru;B. Rusholme;A. Taylor;K. Thompson;C. Tucker;A. H. Turner;E. Y. S. Wu;M. University;Nasa Goddard Cardiff University;Jpl Caltech University of Edinburgh;U. Cambridge;National University of Ireland Maynooth;U. Chicago;Universidade T'ecnica de Lisboa;Laboratoire Apccnrs;U. Manchester;University of California San Diego University College London-University-of-California-San-Diego-University-2303464988
通讯作者：
QUaD collaboration J. R. Hinderks;P. Ade;J. Bock;M. Bowden;M. L. Brown;G. Cahill;J. Carlstrom;P. G. Castro;S. Church;T. Culverhouse;R. Friedman;K. Ganga;W. Gear;S. Gupta;J. Harris;V. Haynes;B. Keating;J. Kovac;E. Kirby;A. E. Lange;E. Leitch;O. Mallie;S. Melhuish;Y. Memari;J. A. Murphy;A. Orlando;R. Schwarz;C. O'Sullivan;L. Piccirillo;C. Pryke;N. Rajguru;B. Rusholme;A. Taylor;K. Thompson;C. Tucker;A. H. Turner;E. Y. S. Wu;M. University;Nasa Goddard Cardiff University;Jpl Caltech University of Edinburgh;U. Cambridge;National University of Ireland Maynooth;U. Chicago;Universidade T'ecnica de Lisboa;Laboratoire Apccnrs;U. Manchester;University of California San Diego University College London-University-of-California-San-Diego-University-2303464988
Q/U 成像实验仪
DOI：
10.1088/0004-637x/768/1/9
发表时间：
2013
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Bischoff C
通讯作者：
Bischoff C
影响因子：
8.6
作者：
Ade, P. A. R.;Aikin, R. W.;Yoon, K. W.
通讯作者：
Yoon, K. W.