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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. Schmitt
  • Suzanne T. Staggs, Eve M. Vavagiakis, Jonathan Ward, Edward J. Wollack

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

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 - 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
Country/TerritoryUnited 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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