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The design and characterization of wideband spline-profiled feedhorns for Advanced ACTPol

Author(s): Simon, Sara M; Austermann, Jason; Beall, James A; Choi, Steve K; Coughlin, Kevin P; et al

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Abstract: Advanced ACTPol (AdvACT) is an upgraded camera for the Atacama Cosmology Telescope (ACT) that will measure the cosmic microwave background in temperature and polarization over a wide range of angular scales and five frequency bands from 28-230 GHz. AdvACT will employ four arrays of feedhorn-coupled, polarization sensitive multichroic detectors. To accommodate the higher pixel packing densities necessary to achieve AdvACT’s sensitivity goals, we have developed and optimized wideband spline-profiled feedhorns for the AdvACT multichroic arrays that maximize coupling efficiency while carefully controlling polarization systematics. We present the design, fabrication, and testing of wideband spline-profiled feedhorns for the multichroic arrays of AdvACT.
Publication Date: 2016
Electronic Publication Date: 2016
Citation: Simon, Sara M, Austermann, Jason, Beall, James A, Choi, Steve K, Coughlin, Kevin P, Duff, Shannon M, Gallardo, Patricio A, Henderson, Shawn W, Hills, Felicity B, Ho, Shuay-Pwu Patty, Hubmayr, Johannes, Josaitis, Alec, Koopman, Brian J, McMahon, Jeff J, Nati, Federico, Newburgh, Laura, Niemack, Michael D, Salatino, Maria, Schillaci, Alessandro, Schmitt, Benjamin L, Staggs, Suzanne T, Vavagiakis, Eve M, Ward, Jonathan, Wollack, Edward J. (2016). The design and characterization of wideband spline-profiled feedhorns for Advanced ACTPol. MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VIII, 9914 (10.1117/12.2233603
DOI: doi:10.1117/12.2233603
ISSN: 0277-786X
Type of Material: Conference Article
Journal/Proceeding Title: MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VIII
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.



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