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The Design and Characterization of Wideband Spline-profiled Feedhorns for Advanced ActpolAdvanced 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 Ad- vACTs 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.
Document ID
20160010641
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Simon, Sara M.
(Princeton Univ. Princeton, NJ, United States)
Austermann, Jason
(National Inst. of Standards and Technology Boulder, CO, United States)
Beall, James A.
(National Inst. of Standards and Technology Boulder, CO, United States)
Choi, Steve K.
(Princeton Univ. Princeton, NJ, United States)
Coughlin, Kevin P.
(Michigan Univ. Ann Arbor, MI, United States)
Duff, Shannon M.
(National Inst. of Standards and Technology Boulder, CO, United States)
Gallardo, Patricio A.
(Cornell Univ. Ithaca, NY, United States)
Henderson, Shawn W.
(Cornell Univ. Ithaca, NY, United States)
Hills, Felicity B.
(Michigan Univ. Ann Arbor, MI, United States)
Ho, Shuay-Pwu Patty
(Princeton Univ. Princeton, NJ, United States)
Hubmayr, Johannes
(National Inst. of Standards and Technology Boulder, CO, United States)
Josaitis, Alec
(Michigan Univ. Ann Arbor, MI, United States)
Koopman, Brian J.
(Cornell Univ. Ithaca, NY, United States)
McMahon, Jeff J.
(Cornell Univ. Ithaca, NY, United States)
Nati, Federico
(Pennsylvania Univ. Philadelphia, PA, United States)
Newburgh, Laura
(Toronto Univ. Ontario, Canada)
Niemack, Michael D.
(Cornell Univ. Ithaca, NY, United States)
Salatino, Maria
(Princeton Univ. Princeton, NJ, United States)
Schillaci, Alessandro
(Pontifical Catholic Univ. of Chile Santiago, Chile)
Wollack, Edward J.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 30, 2016
Publication Date
July 19, 2016
Publication Information
Publication: SPIE Proceedings
Publisher: SPIE
Volume: 9914
Subject Category
Instrumentation And Photography
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN35143
Distribution Limits
Public
Copyright
Other
Keywords
Atacama Cosmology Telescope (ACT)
feedhorn-coupled
multichroic detectors

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