Experimental performance comparison of two polarimeter techniques for CMB applications

被引：0

作者：

Maffei, B. ^{[1
]}

Pisano, G. ^{[1
]}

Ng, M. W. ^{[1
]}

Haynes, V. C. ^{[1
]}

机构：

[1] Univ Manchester, Sch Phys & Astron, JBCA, Manchester M13 9PL, Lancs, England

来源：

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VI | 2012年 / 8452卷

关键词：

CMB instrumentation; mm-wave components; RF characterisation; MICROWAVE BACKGROUND ASTRONOMY; HALF-WAVE PLATE; SUBMILLIMETER INSTRUMENTS;

D O I：

10.1117/12.926911

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Polarisation modulators are necessary for present and next generations of CMB polarisation experiments. Because of the very faint B-mode signal expected, these instruments have not only to be extremely sensitive but also to have low and well-characterised systematic effects. The beam RF characterisation in the W-band (75-110 GHz) of two polarimeter pixels using the same corrugated horn has been performed using two different modulators: a waveguide rotator modulator and a quasi-optical half-wave plate. Co- and cross-polarisation beam measurements are presented together with the systematic effects introduced by both modulators.

引用

页数：7

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