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    Refractive telescope systems for future cosmic microwave background polarimetry experiments


    Hargrave, P.C. and Savini, G. and Gradziel, Marcin and Trappe, Neil and Tynan, Niall and Candotti, Massimo and Challinor, A. and Sørenson, Stig and Ade, P.A.R. and Sudiwala, R. and van der Vorst, M. (2014) Refractive telescope systems for future cosmic microwave background polarimetry experiments. Proceedings of SPIE, 9153 (915314). ISSN 0277-786X

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    Abstract

    This paper presents the key findings of an ESA-funded programme of work to investigate refractive systems and their application to precision polarimetry experiments. We briefly summarize the derivation of requirements on the optical system for CMB polarimetry, and the design of a refractive telescope system which meets these stringent requirements. An extensive programme of experimental work was undertaken in order to better understand the optical, thermal and mechanical characteristics of the lens material, and of lenses made from this material. A repeatable and controllable antireflection coating procedure was developed and validated, and used to coat lenses used in this study. Optical measurements before and after coating have been used to validate a new module for an industry-standard antenna modelling software package.

    Item Type: Article
    Additional Information: This work was funded by the European Space Agency under contract number 4000102522/10/NL/AF. Cite as: Peter Hargrave, Giorgio Savini, Marcin Gradziel, Neil Trappe, Niall Tynan, Massimo Candotti, Anthony Challinor, Stig Sørenson, Peter Ade, Rashmi Sudiwala, and Maarten van der Vorst "Refractive telescope systems for future cosmic microwave background polarimetry experiments", Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 915314 (23 July 2014); https://doi.org/10.1117/12.2054634
    Keywords: lens; dielectric; telescope; polarimetry; modelling; satellite; coating;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 13935
    Identification Number: https://doi.org/10.1117/12.2054634
    Depositing User: Dr. Neil Trappe
    Date Deposited: 03 Feb 2021 16:01
    Journal or Publication Title: Proceedings of SPIE
    Publisher: SPIE
    Refereed: Yes
    Funders: European Space Agency
    URI:

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