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Title: THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT

Abstract

The Atacama Cosmology Telescope (ACT) makes high angular resolution measurements of anisotropies in the Cosmic Microwave Background (CMB) at millimeter wavelengths. We describe ACTPol, an upgraded receiver for ACT, which uses feedhorn-coupled, polarization-sensitive detector arrays, a 3° field of view, 100 mK cryogenics with continuous cooling, and meta material antireflection coatings. ACTPol comprises three arrays with separate cryogenic optics: two arrays at a central frequency of 148 GHz and one array operating simultaneously at both 97 GHz and 148 GHz. The combined instrument sensitivity, angular resolution, and sky coverage are optimized for measuring angular power spectra, clusters via the thermal Sunyaev–Zel’dovich (SZ) and kinetic SZ signals, and CMB lensing due to large-scale structure. The receiver was commissioned with its first 148 GHz array in 2013, observed with both 148 GHz arrays in 2014, and has recently completed its first full season of operations with the full suite of three arrays. This paper provides an overview of the design and initial performance of the receiver and related systems.

Authors:
 [1];  [2];  [3]; ; ;  [4];  [5]; ; ; ; ;  [6];  [7]; ;  [8]; ;  [9]; ;  [10];  [11] more »; « less
  1. Department of Physics, West Chester University of Pennsylvania, West Chester, PA 19383 (United States)
  2. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA (United Kingdom)
  3. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States)
  4. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States)
  5. Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z4 (Canada)
  6. NIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305 (United States)
  7. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025 (United States)
  8. Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544 (United States)
  9. Department of Physics, Cornell University, Ithaca, NY 14853 (United States)
  10. Department of Physics, University of Michigan Ann Arbor, MI 48109 (United States)
  11. Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago (Chile)
Publication Date:
OSTI Identifier:
22660917
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal, Supplement Series
Additional Journal Information:
Journal Volume: 227; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0067-0049
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; ANTIREFLECTION COATINGS; BACKGROUND RADIATION; COOLING; COSMOLOGY; CRYOGENICS; GHZ RANGE; GRAVITATIONAL LENSES; POLARIZATION; RELICT RADIATION; RESOLUTION; SENSITIVITY; STAR CLUSTERS; TELESCOPES

Citation Formats

Thornton, R. J., Ade, P. A. R., Aiola, S., Angilè, F. E., Devlin, M. J., Dicker, S. R., Amiri, M., Beall, J. A., Becker, D. T., Fowler, J. W., Fox, A. E., Gao, J., Cho, H-M., Choi, S. K., Grace, E., Corlies, P., Gallardo, P. A., Coughlin, K. P., Datta, R., Dünner, R., and others, and. THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT. United States: N. p., 2016. Web. doi:10.3847/1538-4365/227/2/21.
Thornton, R. J., Ade, P. A. R., Aiola, S., Angilè, F. E., Devlin, M. J., Dicker, S. R., Amiri, M., Beall, J. A., Becker, D. T., Fowler, J. W., Fox, A. E., Gao, J., Cho, H-M., Choi, S. K., Grace, E., Corlies, P., Gallardo, P. A., Coughlin, K. P., Datta, R., Dünner, R., & others, and. THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT. United States. doi:10.3847/1538-4365/227/2/21.
Thornton, R. J., Ade, P. A. R., Aiola, S., Angilè, F. E., Devlin, M. J., Dicker, S. R., Amiri, M., Beall, J. A., Becker, D. T., Fowler, J. W., Fox, A. E., Gao, J., Cho, H-M., Choi, S. K., Grace, E., Corlies, P., Gallardo, P. A., Coughlin, K. P., Datta, R., Dünner, R., and others, and. Thu . "THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT". United States. doi:10.3847/1538-4365/227/2/21.
@article{osti_22660917,
title = {THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT},
author = {Thornton, R. J. and Ade, P. A. R. and Aiola, S. and Angilè, F. E. and Devlin, M. J. and Dicker, S. R. and Amiri, M. and Beall, J. A. and Becker, D. T. and Fowler, J. W. and Fox, A. E. and Gao, J. and Cho, H-M. and Choi, S. K. and Grace, E. and Corlies, P. and Gallardo, P. A. and Coughlin, K. P. and Datta, R. and Dünner, R. and others, and},
abstractNote = {The Atacama Cosmology Telescope (ACT) makes high angular resolution measurements of anisotropies in the Cosmic Microwave Background (CMB) at millimeter wavelengths. We describe ACTPol, an upgraded receiver for ACT, which uses feedhorn-coupled, polarization-sensitive detector arrays, a 3° field of view, 100 mK cryogenics with continuous cooling, and meta material antireflection coatings. ACTPol comprises three arrays with separate cryogenic optics: two arrays at a central frequency of 148 GHz and one array operating simultaneously at both 97 GHz and 148 GHz. The combined instrument sensitivity, angular resolution, and sky coverage are optimized for measuring angular power spectra, clusters via the thermal Sunyaev–Zel’dovich (SZ) and kinetic SZ signals, and CMB lensing due to large-scale structure. The receiver was commissioned with its first 148 GHz array in 2013, observed with both 148 GHz arrays in 2014, and has recently completed its first full season of operations with the full suite of three arrays. This paper provides an overview of the design and initial performance of the receiver and related systems.},
doi = {10.3847/1538-4365/227/2/21},
journal = {Astrophysical Journal, Supplement Series},
issn = {0067-0049},
number = 2,
volume = 227,
place = {United States},
year = {2016},
month = {12}
}

Works referencing / citing this record:

SPT-3G: A Multichroic Receiver for the South Pole Telescope
journal, July 2018

  • Anderson, A. J.; Ade, P. A. R.; Ahmed, Z.
  • Journal of Low Temperature Physics, Vol. 193, Issue 5-6
  • DOI: 10.1007/s10909-018-2007-z