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ACTPol: a polarization-sensitive receiver for the Atacama Cosmology Telescope

Niemack, M. D., Ade, Peter A. R., Aguirre, J., Barrientos, F., Beall, J. A., Bond, J. R., Britton, J., Cho, H. M., Das, S., Devlin, M. J., Dicker, S., Dunkley, J., Dünner, R., Fowler, J. W., Hajian, A., Halpern, M., Hasselfield, M., Hilton, G. C., Hilton, M., Hubmayr, J., Hughes, J. P., Infante, L., Irwin, K. D., Jarosik, N., Klein, J., Kosowsky, A., Marriage, T. A., McMahon, J., Menanteau, F., Moodley, K., Nibarger, J. P., Nolta, M. R., Page, L. A., Partridge, B., Reese, E. D., Sievers, J., Spergel, D. N., Staggs, S. T., Thornton, R., Tucker, Carole Elizabeth, Wollack, E. and Yoon, K. W. 2010. ACTPol: a polarization-sensitive receiver for the Atacama Cosmology Telescope. Presented at: Millimeter, submillimeter, and far-infrared detectors and instrumentation for astronomy V, San Diego, CA, USA, 29 June-2 July 2010. Proceedings of the SPIE conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V held in San Diego CA 29 June 2010. Proceedings of SPIE , vol. 7741. Bellingham, WA: SPIE, 77411S. 10.1117/12.857464

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The six-meter Atacama Cosmology Telescope (ACT) in Chile was built to measure the cosmic microwave background (CMB) at arcminute angular scales. We are building a new polarization sensitive receiver for ACT (ACTPol). ACTPol will characterize the gravitational lensing of the CMB and aims to constrain the sum of the neutrino masses with ~ 0.05 eV precision, the running of the spectral index of inflation-induced fluctuations, and the primordial helium abundance to better than 1 %. Our observing fields will overlap with the SDSS BOSS survey at optical wavelengths, enabling a variety of cross-correlation science, including studies of the growth of cosmic structure from Sunyaev-Zel'dovich observations of clusters of galaxies as well as independent constraints on the sum of the neutrino masses. We describe the science objectives and the initial receiver design.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Galaxy groups and clusters; Helium; Polarization; Receivers; Telescopes
Publisher: SPIE
ISBN: 9780819482310
ISSN: 0277-786X
Last Modified: 04 Jun 2017 04:07

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