Holland, Wayne S., Maffei, Bruno, Pisano, Giampaolo ORCID: https://orcid.org/0000-0003-4302-5681, Ng, M. W. and Haynes, V. C. 2012. Experimental performance comparison of two polarimeter techniques for CMB applications. Presented at: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, Amsterdam, The Netherlands, 3-6 July 2012. Published in: Holland, Wayne S. and Zmuidzinas, Jonas eds. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI (Proceedings). Proceedings of the SPIE , vol.8452 Bellingham, WA: SPIE, p. 845227. 10.1117/12.926911 |
Official URL: http://dx.doi.org/10.1117/12.926911
Abstract
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. Coand cross-polarisation beam measurements are presented together with the systematic effects introduced by both modulators.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy |
Uncontrolled Keywords: | Equipment and services; Modulators; Polarization; Waveguides |
Publisher: | SPIE |
ISBN: | 9780819491534 |
ISSN: | 0277-786X |
Related URLs: | |
Last Modified: | 25 Oct 2022 09:55 |
URI: | https://orca.cardiff.ac.uk/id/eprint/60491 |
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