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

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. SchmittSuzanne T. Staggs, Eve M. Vavagiakis, Jonathan Ward, Edward J. Wollack

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations

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.

Original languageEnglish (US)
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
EditorsJonas Zmuidzinas, Wayne S. Holland
PublisherSPIE
ISBN (Electronic)9781510602076
DOIs
StatePublished - Jan 1 2016
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII - Edinburgh, United Kingdom
Duration: Jun 28 2016Jul 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9914
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
CountryUnited Kingdom
CityEdinburgh
Period6/28/167/1/16

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Advanced ACTPol
  • Cosmic microwave background
  • Feedhorn
  • Polarization
  • Spline-profiled
  • Wideband

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