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Proceedings Paper

The design and characterization of wideband spline-profiled feedhorns for Advanced ACTPol
Author(s): Sara M. Simon; Jason Austermann; James A. Beall; Steve K Choi; Kevin P. Coughlin; Shannon M. Duff; Patricio A. Gallardo; Shawn W. Henderson; Felicity B. Hills; Shuay-Pwu Patty Ho; Johannes Hubmayr; Alec Josaitis; Brian J. Koopman; Jeff J. McMahon; Federico Nati; Laura Newburgh; Michael D. Niemack; Maria Salatino; Alessandro Schillaci; Benjamin L. Schmitt; Suzanne T. Staggs; Eve M. Vavagiakis; Jonathan Ward; Edward J. Wollack
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Paper 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 Ad- vACT’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.

Paper Details

Date Published: 19 July 2016
PDF: 13 pages
Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 991416 (19 July 2016); doi: 10.1117/12.2233603
Show Author Affiliations
Sara M. Simon, Princeton Univ. (United States)
Jason Austermann, National Institute of Standards and Technology (United States)
James A. Beall, National Institute of Standards and Technology (United States)
Steve K Choi, Princeton Univ. (United States)
Kevin P. Coughlin, Univ. of Michigan (United States)
Shannon M. Duff, National Institute of Standards and Technology (United States)
Patricio A. Gallardo, Cornell Univ. (United States)
Shawn W. Henderson, Cornell Univ. (United States)
Felicity B. Hills, Univ. of Michigan (United States)
Shuay-Pwu Patty Ho, Princeton Univ. (United States)
Johannes Hubmayr, National Institute of Standards and Technology (United States)
Alec Josaitis, Univ. of Michigan (United States)
Brian J. Koopman, Cornell Univ. (United States)
Jeff J. McMahon, Univ. of Michigan (United States)
Federico Nati, Univ. of Pennsylvania (United States)
Laura Newburgh, Univ. of Toronto (Canada)
Michael D. Niemack, Cornell Univ. (United States)
Maria Salatino, Princeton Univ. (United States)
Alessandro Schillaci, Pontificia Univ. Católica de Chile (Chile)
Benjamin L. Schmitt, Univ. of Pennsylvania (United States)
Suzanne T. Staggs, Princeton Univ. (United States)
Eve M. Vavagiakis, Cornell Univ. (United States)
Jonathan Ward, Univ. of Pennsylvania (United States)
Edward J. Wollack, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 9914:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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