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:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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