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Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope

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Abstract

We present the design and the preliminary on-sky performance with respect to beams and passbands of a multichroic polarimeter array covering the 90 and 146 GHz cosmic microwave background bands and its enabling broad-band optical system recently deployed on the Atacama Cosmology Telescope (ACT). The constituent pixels are feedhorn-coupled multichroic polarimeters fabricated at NIST. This array is coupled to the ACT telescope via a set of three silicon lenses incorporating novel broad-band metamaterial anti-reflection coatings. This receiver represents the first multichroic detector array deployed for a CMB experiment and paves the way for the extensive use of multichroic detectors and broad-band optical systems in the next generation of CMB experiments.

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Acknowledgments

This work was supported by NASA through awards NNX13AE56G and NNX14AB58G and by the U.S. National Science Foundation through awards AST-0965625 and PHY-1214379. The NIST authors would like to acknowledge the support of the NIST Quantum Initiative. The work of KPC, EG, BJK, BLS, CDM, JTW, and SMS were supported by NASA Office of the Chief Technologists Space Technology Research Fellowship awards.

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Authors and Affiliations

  1. Department of Physics, University of Michigan, Ann Arbor, MI, 48109, USA

    R. Datta, K. P. Coughlin, J. McMahon & C. D. Munson

  2. NIST Quantum Devices Group, 325 Broadway Mailcode 817.03, Boulder, CO, 80305, USA

    J. Austermann, J. A. Beall, D. Becker, S. M. Duff, G. C. Hilton, J. Hubmayr, J. V. Lanen & D. Li

  3. Department of Physics, Cornell University, Ithaca, NY, 14853, USA

    P. A. Gallardo, S. W. Henderson, B. J. Koopman, M. D. Niemack, J. R. Stevens & E. M. Vavagiakis

  4. Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ, 08544, USA

    E. Grace, S. P. Ho, L. Page, C. G. Pappas, M. Salatino, A. Schillaci, S. M. Simon & S. T. Staggs

  5. Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ, 08544, USA

    M. Hasselfield

  6. SLAC National Accelerator Laboratory, 2575 Sandy Hill Road, Menlo Park, CA, 94025, USA

    D. Li

  7. Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA, 19104, USA

    F. Nati, B. L. Schmitt & J. T. Ward

  8. Sociedad Radiosky Asesorias de Ingenieria Limitada Lincoyan 54, Depto 805, Concepción, Chile

    A. Schillaci

  9. NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA

    E. J. Wollack

Authors
  1. R. Datta
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  2. J. Austermann
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  3. J. A. Beall
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  4. D. Becker
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  5. K. P. Coughlin
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  6. S. M. Duff
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  7. P. A. Gallardo
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  8. E. Grace
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  9. M. Hasselfield
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  10. S. W. Henderson
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  11. G. C. Hilton
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  12. S. P. Ho
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  13. J. Hubmayr
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  14. B. J. Koopman
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  15. J. V. Lanen
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  16. D. Li
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  17. J. McMahon
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  18. C. D. Munson
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  19. F. Nati
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  20. M. D. Niemack
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  21. L. Page
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  22. C. G. Pappas
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  23. M. Salatino
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  24. B. L. Schmitt
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  25. A. Schillaci
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  26. S. M. Simon
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  27. S. T. Staggs
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  28. J. R. Stevens
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  29. E. M. Vavagiakis
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  30. J. T. Ward
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  31. E. J. Wollack
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Corresponding author

Correspondence to R. Datta.

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Datta, R., Austermann, J., Beall, J.A. et al. Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope. J Low Temp Phys 184, 568–575 (2016). https://doi.org/10.1007/s10909-016-1553-5

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  • DOI: https://doi.org/10.1007/s10909-016-1553-5

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