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Journal of Low Temperature Physics

, Volume 176, Issue 5–6, pp 741–748 | Cite as

The Detector System for the Stratospheric Kinetic Inductance Polarimeter (Skip)

  • B. R. Johnson
  • P. A. R. Ade
  • D. Araujo
  • K. J. Bradford
  • D. Chapman
  • P. K. Day
  • J. Didier
  • S. Doyle
  • H. K. Eriksen
  • D. Flanigan
  • C. Groppi
  • S. Hillbrand
  • G. Jones
  • M. Limon
  • P. Mauskopf
  • H. McCarrick
  • A. Miller
  • T. Mroczkowski
  • B. Reichborn-Kjennerud
  • B. Smiley
  • J. Sobrin
  • I. K. Wehus
  • J. Zmuidzinas
Article

Abstract

The stratospheric kinetic inductance polarimeter is a proposed balloon-borne experiment designed to study the cosmic microwave background, the cosmic infrared background and Galactic dust emission by observing 1,133 deg\(^2\) of sky in the Northern Hemisphere with launches from Kiruna, Sweden. The instrument contains 2,317 single-polarization, horn-coupled, aluminum lumped-element kinetic inductance detectors (Lekids). The Lekids will be maintained at 100 mK with an adiabatic demagnetization refrigerator. The polarimeter operates in two configurations, one sensitive to a spectral band centered on 150 GHz and the other sensitive to 260 and 350 GHz bands. The detector readout system is based on the ROACH-1 board, and the detectors will be biased below 300 MHz. The detector array is fed by an F/2.4 crossed-Dragone telescope with a 500 mm aperture yielding a 15 arcmin FWHM beam at 150 GHz. To minimize detector loading and maximize sensitivity, the entire optical system will be cooled to 1 K. Linearly polarized sky signals will be modulated with a metal-mesh half-wave plate that is mounted at the telescope aperture and rotated by a superconducting magnetic bearing. The observation program consists of at least two, 5-day flights beginning with the 150 GHz observations.

Keywords

CMB CIB MKID LEKID 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • B. R. Johnson
    • 1
  • P. A. R. Ade
    • 4
  • D. Araujo
    • 1
  • K. J. Bradford
    • 1
  • D. Chapman
    • 1
  • P. K. Day
    • 7
  • J. Didier
    • 1
  • S. Doyle
    • 4
  • H. K. Eriksen
    • 5
  • D. Flanigan
    • 1
  • C. Groppi
    • 2
  • S. Hillbrand
    • 1
  • G. Jones
    • 1
    • 6
  • M. Limon
    • 1
  • P. Mauskopf
    • 2
  • H. McCarrick
    • 1
  • A. Miller
    • 1
  • T. Mroczkowski
    • 3
  • B. Reichborn-Kjennerud
    • 1
  • B. Smiley
    • 1
  • J. Sobrin
    • 1
  • I. K. Wehus
    • 7
  • J. Zmuidzinas
    • 3
    • 7
  1. 1.Department of PhysicsColumbia UniversityNew YorkUSA
  2. 2.Department of PhysicsArizona State UniversityTempeUSA
  3. 3.Department of PhysicsCaltechPasadenaUSA
  4. 4.School of Physics and AstronomyCardiff UniversityCardiffUK
  5. 5.Institute of Theoretical AstrophysicsUniversity of OsloOsloNorway
  6. 6.National Radio Astronomy ObservatoryCharlottesvilleUSA
  7. 7.Jet Propulsion LaboratoryCaltechPasadenaUSA

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