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Kusaka A, Essinger-Hileman T, Appel JW, et al. Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument. Rev Sci Instrum. 2014;85(2):024501doi: 10.1063/1.4862058.
Kusaka, A., Essinger-Hileman, T., Appel, J. W., Gallardo, P., Irwin, K. D., Jarosik, N., Nolta, M. R., Page, L. A., Parker, L. P., Raghunathan, S., Sievers, J. L., Simon, S. M., Staggs, S. T., & Visnjic, K. (2014). Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument. The Review of scientific instruments, 85(2), 024501. https://doi.org/10.1063/1.4862058
Kusaka, A, et al. "Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument." The Review of scientific instruments vol. 85,2 (2014): 024501. doi: https://doi.org/10.1063/1.4862058
Kusaka A, Essinger-Hileman T, Appel JW, Gallardo P, Irwin KD, Jarosik N, Nolta MR, Page LA, Parker LP, Raghunathan S, Sievers JL, Simon SM, Staggs ST, Visnjic K. Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument. Rev Sci Instrum. 2014 Feb;85(2):024501. doi: 10.1063/1.4862058. PMID: 24593374.
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Rev Sci Instrum. 2014 Feb;85(2):024501. doi: 10.1063/1.4862058.

Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument.

The Review of scientific instruments

A Kusaka, T Essinger-Hileman, J W Appel, P Gallardo, K D Irwin, N Jarosik, M R Nolta, L A Page, L P Parker, S Raghunathan, J L Sievers, S M Simon, S T Staggs, K Visnjic

Affiliations

  1. Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
  2. Department of Physics, Cornell University, Ithaca, New York 14853, USA.
  3. 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.
  4. The Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario M5S 3H8, Canada.
  5. Department of Astronomy, Universidad de Chile, Santiago, Chile.

PMID: 24593374 DOI: 10.1063/1.4862058

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.

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