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Proceedings Paper

CLASS: the cosmology large angular scale surveyor
Author(s): Thomas Essinger-Hileman; Aamir Ali; Mandana Amiri; John W. Appel; Derek Araujo; Charles L. Bennett; Fletcher Boone; Manwei Chan; Hsiao-Mei Cho; David T. Chuss; Felipe Colazo; Erik Crowe; Kevin Denis; Rolando Dünner; Joseph Eimer; Dominik Gothe; Mark Halpern; Kathleen Harrington; Gene C. Hilton; Gary F. Hinshaw; Caroline Huang; Kent Irwin; Glenn Jones; John Karakla; Alan J. Kogut; David Larson; Michele Limon; Lindsay Lowry; Tobias Marriage; Nicholas Mehrle; Amber D. Miller; Nathan Miller; Samuel H. Moseley; Giles Novak; Carl Reintsema; Karwan Rostem; Thomas Stevenson; Deborah Towner; Kongpop U-Yen; Emily Wagner; Duncan Watts; Edward J. Wollack; Zhilei Xu; Lingzhen Zeng
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Paper Abstract

The Cosmology Large Angular Scale Surveyor (CLASS) is an experiment to measure the signature of a gravitationalwave background from inflation in the polarization of the cosmic microwave background (CMB). CLASS is a multi-frequency array of four telescopes operating from a high-altitude site in the Atacama Desert in Chile. CLASS will survey 70% of the sky in four frequency bands centered at 38, 93, 148, and 217 GHz, which are chosen to straddle the Galactic-foreground minimum while avoiding strong atmospheric emission lines. This broad frequency coverage ensures that CLASS can distinguish Galactic emission from the CMB. The sky fraction of the CLASS survey will allow the full shape of the primordial B-mode power spectrum to be characterized, including the signal from reionization at low ɺ. Its unique combination of large sky coverage, control of systematic errors, and high sensitivity will allow CLASS to measure or place upper limits on the tensor-to-scalar ratio at a level of r = 0:01 and make a cosmic-variance-limited measurement of the optical depth to the surface of last scattering, Ƭ .

Paper Details

Date Published: 23 July 2014
PDF: 23 pages
Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91531I (23 July 2014); doi: 10.1117/12.2056701
Show Author Affiliations
Thomas Essinger-Hileman, Johns Hopkins Univ. (United States)
Aamir Ali, Johns Hopkins Univ. (United States)
Mandana Amiri, The Univ. of British Columbia (Canada)
John W. Appel, Johns Hopkins Univ. (United States)
Derek Araujo, Columbia Univ. (United States)
Charles L. Bennett, Johns Hopkins Univ. (United States)
Fletcher Boone, Johns Hopkins Univ. (United States)
Manwei Chan, Johns Hopkins Univ. (United States)
Hsiao-Mei Cho, National Institute of Standards and Technology (United States)
David T. Chuss, NASA Goddard Space Flight Ctr. (United States)
Felipe Colazo, NASA Goddard Space Flight Ctr. (United States)
Erik Crowe, NASA Goddard Space Flight Ctr. (United States)
Kevin Denis, NASA Goddard Space Flight Ctr. (United States)
Rolando Dünner, Instituto de Astofisica, Pontificia Univ. Católica de Chile (Chile)
Joseph Eimer, Johns Hopkins Univ. (United States)
Dominik Gothe, Johns Hopkins Univ. (United States)
Mark Halpern, The Univ. of British Columbia (Canada)
Kathleen Harrington, Johns Hopkins Univ. (United States)
Gene C. Hilton, National Institute of Standards and Technology (United States)
Gary F. Hinshaw, The Univ. of British Columbia (Canada)
Caroline Huang, Johns Hopkins Univ. (United States)
Kent Irwin, Stanford Univ. (United States)
Glenn Jones, Columbia Univ. (United States)
John Karakla, Johns Hopkins Univ. (United States)
Alan J. Kogut, NASA Goddard Space Flight Ctr. (United States)
David Larson, Johns Hopkins Univ. (United States)
Michele Limon, Columbia Univ. (United States)
Lindsay Lowry, Johns Hopkins Univ. (United States)
Tobias Marriage, Johns Hopkins Univ. (United States)
Nicholas Mehrle, Johns Hopkins Univ. (United States)
Amber D. Miller, Columbia Univ. (United States)
Nathan Miller, NASA Goddard Space Flight Ctr. (United States)
Samuel H. Moseley, NASA Goddard Space Flight Ctr. (United States)
Giles Novak, Northwestern Univ. (United States)
Carl Reintsema, National Institute of Standards and Technology (United States)
Karwan Rostem, NASA Goddard Space Flight Ctr. (United States)
Thomas Stevenson, NASA Goddard Space Flight Ctr. (United States)
Deborah Towner, NASA Goddard Space Flight Ctr. (United States)
Kongpop U-Yen, NASA Goddard Space Flight Ctr. (United States)
Emily Wagner, Johns Hopkins Univ. (United States)
Duncan Watts, Johns Hopkins Univ. (United States)
Edward J. Wollack, NASA Goddard Space Flight Ctr. (United States)
Zhilei Xu, Johns Hopkins Univ. (United States)
Lingzhen Zeng, Harvard-Smithsonian Ctr. for Astrophysics (United States)


Published in SPIE Proceedings Vol. 9153:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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