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    Electromagnetic modelling of few-moded Winston cones in the far-infrared


    Gleeson, E. and Murphy, J.Anthony and Church, S.E. and Colgan, R. and O'Sullivan, Créidhe (2002) Electromagnetic modelling of few-moded Winston cones in the far-infrared. AIP Conference Proceedings, 616 (295). ISSN 0094-243X

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    Abstract

    Winston cones have traditionally been used as detector feeds in far-infrared cosmological experiments, such as SuZIe, the Sunyaev-Zel’dovich Infra-red Experiment [1] on the CSO. They are usually designed using ray tracing, which becomes a very poor approximation when the number of spatial modes propagated by the horn is small in number, often the case at the longest wavelengths. We describe a more accurate approach involving electromagnetic modelling of Winston cones using a rigorous electromagnetic mode matching technique. It is straightforward to also consider the case of few-moded corrugated Winston cones, which offer lower sidelobe levels than smooth walled cones which is important for high sensitivity experiments. Furthermore, the mode matching technique allows more complex structures such as back-to-back Winston cones and the detector cavities to also be analyzed.

    Item Type: Article
    Additional Information: Cite as: AIP Conference Proceedings 616, 295 (2002); https://doi.org/10.1063/1.1475647
    Keywords: Winston cones; Electromagnetic modelling; Far-infrared;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 13782
    Identification Number: https://doi.org/10.1063/1.1475647
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 06 Jan 2021 17:34
    Journal or Publication Title: AIP Conference Proceedings
    Publisher: American Institute of Physics
    Refereed: Yes
    URI:

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