title: Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument.
abstract: We evaluate the modulation of cosmic microwave background polarization using a rapidly rotating, half-wave plate (HWP) on the Atacama B-Mode Search. After demodulating the time-ordered-data (TOD), we find a significant reduction of atmospheric fluctuations. The demodulated TOD is stable on time scales of 500-1000 s, corresponding to frequencies of 1-2 mHz. This facilitates recovery of cosmological information at large angular scales, which are typically available only from balloon-borne or satellite experiments. This technique also achieves a sensitive measurement of celestial polarization without differencing the TOD of paired detectors sensitive to two orthogonal linear polarizations. This is the first demonstration of the ability to remove atmospheric contamination at these levels from a ground-based platform using a rapidly rotating HWP.
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: A
authors.initials: A
authors.lastname: Kusaka
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: T
authors.initials: T
authors.lastname: Essinger-Hileman
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: J W
authors.initials: JW
authors.lastname: Appel
authors.affiliation: Department of Physics, Cornell University, Ithaca, New York 14853, USA.
authors.forename: P
authors.initials: P
authors.lastname: Gallardo
authors.affiliation: National Institute of Standards and Technology, 325 Broadway MC 817.03, Boulder, Colorado 80305, USA and Department of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: K D
authors.initials: KD
authors.lastname: Irwin
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: N
authors.initials: N
authors.lastname: Jarosik
authors.affiliation: The Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario M5S 3H8, Canada.
authors.forename: M R
authors.initials: MR
authors.lastname: Nolta
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: L A
authors.initials: LA
authors.lastname: Page
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: L P
authors.initials: LP
authors.lastname: Parker
authors.affiliation: Department of Astronomy, Universidad de Chile, Santiago, Chile.
authors.forename: S
authors.initials: S
authors.lastname: Raghunathan
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Sievers
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Simon
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: S T
authors.initials: ST
authors.lastname: Staggs
authors.affiliation: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: K
authors.initials: K
authors.lastname: Visnjic