Experimental performance comparison of two polarimeter techniques for CMB applications

B Maffei, G Pisano, M W Ng, V C Haynes

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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.
    Original languageEnglish
    Title of host publicationhost publication
    Volume8452
    Publication statusPublished - 2012
    EventSociety of Photo-Optical Instrumentation Engineers (SPIE) Conference Series -
    Duration: 1 Jan 1824 → …
    http://adsabs.harvard.edu/abs/2012SPIE.8452E..0IO

    Conference

    ConferenceSociety of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
    Period1/01/24 → …
    Internet address

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