Characterizing Atacama B-mode Search Detectors with a Half-Wave Plate

S. M. Simon; J. W. Appel; L. E. Campusano; S. K. Choi; K. T. Crowley; T. Essinger-Hileman; P. Gallardo; S. P. Ho; A. Kusaka; F. Nati; G. A. Palma; L. A. Page; S. Raghunathan; S. T. Staggs

doi:10.1007/s10909-015-1370-2

Characterizing Atacama B-mode Search Detectors with a Half-Wave Plate

S. M. Simon, J. W. Appel, L. E. Campusano, S. K. Choi, K. T. Crowley, T. Essinger-Hileman, P. Gallardo, S. P. Ho, A. Kusaka, F. Nati, G. A. Palma, L. A. Page, S. Raghunathan, S. T. Staggs

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13 Scopus citations

Abstract

The Atacama B-Mode Search (ABS) instrument is a cryogenic (∼ 10 K) crossed-Dragone telescope located at an elevation of 5190 m in the Atacama Desert in Chile that observed for three seasons between February 2012 and October 2014. ABS observed the cosmic microwave background (CMB) at large angular scales(40 < ℓ< 500) to limit the B-mode polarization spectrum around the primordial B-mode peak from inflationary gravity waves at ℓ∼ 100. The ABS focal plane consists of 480 transition-edge sensor (TES) bolometers. They are coupled to orthogonal polarizations from a planar ortho-mode transducer and observe at 145 GHz. ABS employs an ambient-temperature, rapidly rotating half-wave plate (HWP) to mitigate systematic effects and move the signal band away from atmospheric 1 / f noise, allowing for the recovery of large angular scales. We discuss how the signal at the second harmonic of the HWP rotation frequency can be used for data selection and for monitoring the detector responsivities.

Original language	English (US)
Pages (from-to)	534-539
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	184
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-015-1370-2
State	Published - Aug 1 2016

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

Keywords

Atacama B-mode Search
Cosmic microwave background
Half-wave plate
Polarization

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10.1007/s10909-015-1370-2

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Simon, S. M., Appel, J. W., Campusano, L. E., Choi, S. K., Crowley, K. T., Essinger-Hileman, T., Gallardo, P., Ho, S. P., Kusaka, A., Nati, F., Palma, G. A., Page, L. A., Raghunathan, S., & Staggs, S. T. (2016). Characterizing Atacama B-mode Search Detectors with a Half-Wave Plate. Journal of Low Temperature Physics, 184(3-4), 534-539. https://doi.org/10.1007/s10909-015-1370-2

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abstract = "The Atacama B-Mode Search (ABS) instrument is a cryogenic (∼ 10 K) crossed-Dragone telescope located at an elevation of 5190 m in the Atacama Desert in Chile that observed for three seasons between February 2012 and October 2014. ABS observed the cosmic microwave background (CMB) at large angular scales(40 < ℓ< 500) to limit the B-mode polarization spectrum around the primordial B-mode peak from inflationary gravity waves at ℓ∼ 100. The ABS focal plane consists of 480 transition-edge sensor (TES) bolometers. They are coupled to orthogonal polarizations from a planar ortho-mode transducer and observe at 145 GHz. ABS employs an ambient-temperature, rapidly rotating half-wave plate (HWP) to mitigate systematic effects and move the signal band away from atmospheric 1 / f noise, allowing for the recovery of large angular scales. We discuss how the signal at the second harmonic of the HWP rotation frequency can be used for data selection and for monitoring the detector responsivities.",

keywords = "Atacama B-mode Search, Cosmic microwave background, Half-wave plate, Polarization",

author = "Simon, {S. M.} and Appel, {J. W.} and Campusano, {L. E.} and Choi, {S. K.} and Crowley, {K. T.} and T. Essinger-Hileman and P. Gallardo and Ho, {S. P.} and A. Kusaka and F. Nati and Palma, {G. A.} and Page, {L. A.} and S. Raghunathan and Staggs, {S. T.}",

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AU - Appel, J. W.

AU - Campusano, L. E.

AU - Choi, S. K.

AU - Crowley, K. T.

AU - Essinger-Hileman, T.

AU - Gallardo, P.

AU - Ho, S. P.

AU - Kusaka, A.

AU - Nati, F.

AU - Palma, G. A.

AU - Page, L. A.

AU - Raghunathan, S.

AU - Staggs, S. T.

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N2 - The Atacama B-Mode Search (ABS) instrument is a cryogenic (∼ 10 K) crossed-Dragone telescope located at an elevation of 5190 m in the Atacama Desert in Chile that observed for three seasons between February 2012 and October 2014. ABS observed the cosmic microwave background (CMB) at large angular scales(40 < ℓ< 500) to limit the B-mode polarization spectrum around the primordial B-mode peak from inflationary gravity waves at ℓ∼ 100. The ABS focal plane consists of 480 transition-edge sensor (TES) bolometers. They are coupled to orthogonal polarizations from a planar ortho-mode transducer and observe at 145 GHz. ABS employs an ambient-temperature, rapidly rotating half-wave plate (HWP) to mitigate systematic effects and move the signal band away from atmospheric 1 / f noise, allowing for the recovery of large angular scales. We discuss how the signal at the second harmonic of the HWP rotation frequency can be used for data selection and for monitoring the detector responsivities.

AB - The Atacama B-Mode Search (ABS) instrument is a cryogenic (∼ 10 K) crossed-Dragone telescope located at an elevation of 5190 m in the Atacama Desert in Chile that observed for three seasons between February 2012 and October 2014. ABS observed the cosmic microwave background (CMB) at large angular scales(40 < ℓ< 500) to limit the B-mode polarization spectrum around the primordial B-mode peak from inflationary gravity waves at ℓ∼ 100. The ABS focal plane consists of 480 transition-edge sensor (TES) bolometers. They are coupled to orthogonal polarizations from a planar ortho-mode transducer and observe at 145 GHz. ABS employs an ambient-temperature, rapidly rotating half-wave plate (HWP) to mitigate systematic effects and move the signal band away from atmospheric 1 / f noise, allowing for the recovery of large angular scales. We discuss how the signal at the second harmonic of the HWP rotation frequency can be used for data selection and for monitoring the detector responsivities.

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KW - Polarization

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Characterizing Atacama B-mode Search Detectors with a Half-Wave Plate

Abstract

All Science Journal Classification (ASJC) codes

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