Experimental performance comparison of two polarimeter techniques for CMB applications

Autor:	Giampaolo Pisano, M. W. Ng, Victor Haynes, Bruno Maffei
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	Physics RF characterisation Pixel business.industry Cosmic microwave background Astrophysics::Instrumentation and Methods for Astrophysics Polarimeter CMB instrumentation Polarization (waves) law.invention Optics law Performance comparison Mm-wave components business Waveguide
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6c0951e8dd351c97cb480cecf994ed6 http://hdl.handle.net/11573/1585648 Zobrazit plný text záznamu